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1 tháng 12 2021
New layers of Earth: Asthenosphere and lithosphere.
13 tháng 11 2019

Đáp án là C

evidence (n) => evident (a) vì it is + adj

Câu này dịch như sau: Từ việc quan sát các trận động đất, rõ ràng là bên ngoài lõi Trái Đất là chất lỏng, trong khi đó, lõi bên trong là chất rắn

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 43.The hard, rigid plates that form the outermost portion of the Earth are about 100 kilometers thick. These plates include both the Earth's crust and the upper mantle. The rocks of the crust are composed mostly of minerals with light elements, like aluminum and sodium, while the mantle contains some heavier elements, like iron and magnesium....
Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 43.

The hard, rigid plates that form the outermost portion of the Earth are about 100 kilometers thick. These plates include both the Earth's crust and the upper mantle. The rocks of the crust are composed mostly of minerals with light elements, like aluminum and sodium, while the mantle contains some heavier elements, like iron and magnesium. Together, the crust and upper mantle that form the surface plates are called the lithosphere. This rigid layer floats on the denser material of the lower mantle the way a wooden raft floats on a pond. The plates are supported by a weak, plastic layer of the lower mantle called the asthenosphere. Also like a raft on a pond, the lithospheric plates are carried along by slow currents in this more fluid layer beneath them.

With an understanding of plate tectonics, geologists have put together a new history for the Earth's surface. About 200 million years ago, the plates at the Earth's surface formed a “supercontinent” called Pangaea. When this supercontinent started to tear apart because of plate movement, Pangaea first broke into two large continental masses with a newly formed sea that grew between the land areas as the depression filled with water. The southern one — which included the modern continents of South America, Africa, Australia, and Antarctica — is called Gondwanaland. The northern one — with North America, Europe, and Asia — is called Laurasia. North America tore away from Europe about 180 million years ago, forming the northern Atlantic Ocean. Some of the lithospheric plates carry ocean floor and others carry land masses or a combination of the two types. The movement of the lithospheric plates is responsible for earthquakes, volcanoes, and the Earth's largest mountain ranges. Current understanding of the interaction between different plates explains why these occur where they do. For example, the edge of the Pacific Ocean has been called the “Ring of Fire” because so many volcanic eruptions and earthquakes happen there. Before the 1960's, geologists could not explain why active volcanoes and strong earthquakes were concentrated in that region. The theory of plate tectonics gave them an answer.

In line 27, the word “concentrated” is closest in meaning to which of the following?

A. Allowed

B. Clustered

C. Exploded

D. Strengthened

1
29 tháng 5 2019

Đáp án B

Giải thích: Concentrated (adj) = được tập trung

                    Clustered (adj) = được tập hợp lại

Dịch nghĩa: Before the 1960's, geologists could not explain why active volcanoes and strong earthquakes were concentrated in that region. The theory of plate tectonics gave them an answer = Trước những năm 1960, các nhà địa chất không thể giải thích tại sao núi lửa hoạt động và động đất mạnh đã được tập trung ở khu vực đó. Lý thuyết kiến ​​tạo mảng đã cho họ một câu trả lời.

          A. Allowed (v) = được cho phép

          C. Exploded (v) = nổ tung

          D. Strengthen (v) = làm mạnh mẽ hơn

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 43.The hard, rigid plates that form the outermost portion of the Earth are about 100 kilometers thick. These plates include both the Earth's crust and the upper mantle. The rocks of the crust are composed mostly of minerals with light elements, like aluminum and sodium, while the mantle contains some heavier elements, like iron and magnesium....
Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 43.

The hard, rigid plates that form the outermost portion of the Earth are about 100 kilometers thick. These plates include both the Earth's crust and the upper mantle. The rocks of the crust are composed mostly of minerals with light elements, like aluminum and sodium, while the mantle contains some heavier elements, like iron and magnesium. Together, the crust and upper mantle that form the surface plates are called the lithosphere. This rigid layer floats on the denser material of the lower mantle the way a wooden raft floats on a pond. The plates are supported by a weak, plastic layer of the lower mantle called the asthenosphere. Also like a raft on a pond, the lithospheric plates are carried along by slow currents in this more fluid layer beneath them.

With an understanding of plate tectonics, geologists have put together a new history for the Earth's surface. About 200 million years ago, the plates at the Earth's surface formed a “supercontinent” called Pangaea. When this supercontinent started to tear apart because of plate movement, Pangaea first broke into two large continental masses with a newly formed sea that grew between the land areas as the depression filled with water. The southern one — which included the modern continents of South America, Africa, Australia, and Antarctica — is called Gondwanaland. The northern one — with North America, Europe, and Asia — is called Laurasia. North America tore away from Europe about 180 million years ago, forming the northern Atlantic Ocean. Some of the lithospheric plates carry ocean floor and others carry land masses or a combination of the two types. The movement of the lithospheric plates is responsible for earthquakes, volcanoes, and the Earth's largest mountain ranges. Current understanding of the interaction between different plates explains why these occur where they do. For example, the edge of the Pacific Ocean has been called the “Ring of Fire” because so many volcanic eruptions and earthquakes happen there. Before the 1960's, geologists could not explain why active volcanoes and strong earthquakes were concentrated in that region. The theory of plate tectonics gave them an answer.

The word “one” in line 14 refers to

A. movements

B. masses

C. sea

D. depression

1
23 tháng 4 2018

Đáp án B

Thông tin: Pangaea first broke into two large continental masses with a newly formed sea that grew between the land areas as the depression filled with water. The southern one - which included the modern continents of South America, Africa, Australia, and Antarctica - is called Gondwanaland.

Dịch nghĩa: Pangaea lần đầu tiên tách thành hai khối lục địa rộng lớn với một biển mới được tạo ra cái mà đã phát triển giữa các vùng đất khi vùng trũng được đổ đầy nước. Mảng phía nam - trong đó bao gồm các lục địa hiện đại Nam Mỹ, châu Phi, Úc và Nam Cực - được gọi là Gondwanaland.

Thông tin đưa ra rằng Pangaea tách thành hai mảng lục địa lớn, mảng phía nam và mảng phía bắc. Do đó từ “one” là từ thay thế cho từ “masses”.

          A. movements (n) = các chuyển động

          C. sea (n) = biển

          D. depression (n) = vùng trũng, vùng thấp hơn

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 43.The hard, rigid plates that form the outermost portion of the Earth are about 100 kilometers thick. These plates include both the Earth's crust and the upper mantle. The rocks of the crust are composed mostly of minerals with light elements, like aluminum and sodium, while the mantle contains some heavier elements, like iron and magnesium....
Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 43.

The hard, rigid plates that form the outermost portion of the Earth are about 100 kilometers thick. These plates include both the Earth's crust and the upper mantle. The rocks of the crust are composed mostly of minerals with light elements, like aluminum and sodium, while the mantle contains some heavier elements, like iron and magnesium. Together, the crust and upper mantle that form the surface plates are called the lithosphere. This rigid layer floats on the denser material of the lower mantle the way a wooden raft floats on a pond. The plates are supported by a weak, plastic layer of the lower mantle called the asthenosphere. Also like a raft on a pond, the lithospheric plates are carried along by slow currents in this more fluid layer beneath them.

With an understanding of plate tectonics, geologists have put together a new history for the Earth's surface. About 200 million years ago, the plates at the Earth's surface formed a “supercontinent” called Pangaea. When this supercontinent started to tear apart because of plate movement, Pangaea first broke into two large continental masses with a newly formed sea that grew between the land areas as the depression filled with water. The southern one — which included the modern continents of South America, Africa, Australia, and Antarctica — is called Gondwanaland. The northern one — with North America, Europe, and Asia — is called Laurasia. North America tore away from Europe about 180 million years ago, forming the northern Atlantic Ocean. Some of the lithospheric plates carry ocean floor and others carry land masses or a combination of the two types. The movement of the lithospheric plates is responsible for earthquakes, volcanoes, and the Earth's largest mountain ranges. Current understanding of the interaction between different plates explains why these occur where they do. For example, the edge of the Pacific Ocean has been called the “Ring of Fire” because so many volcanic eruptions and earthquakes happen there. Before the 1960's, geologists could not explain why active volcanoes and strong earthquakes were concentrated in that region. The theory of plate tectonics gave them an answer.

Which of the following can be inferred about the theory of plate tectonics?

A. It is no longer of great interest to geologists

B. It was first proposed in the 1960's

C. It fails to explain why earthquakes occur

D. It refutes the theory of the existence of a supercontinent

1
24 tháng 7 2019

Đáp án B

Thông tin: Before the 1960's, geologists could not explain why active volcanoes and strong earthquakes were concentrated in that region. The theory of plate tectonics gave them an answer.

Dịch nghĩa: Trước những năm 1960, các nhà địa chất không thể giải thích tại sao núi lửa đang hoạt động và động đất mạnh đã được tập trung ở khu vực đó. Lý thuyết kiến ​​tạo mảng đã cho họ một câu trả lời.

Như vậy, có thể suy ra rằng chỉ từ những năm 1960 trở đi mới có lý thuyết kiến tạo mảng. Phương án B. It was first proposed in the 1960's = Nó lần đầu được đưa ra trong những năm 1960, là phương án chính xác nhất.

          A. It is no longer of great interest to geologists = Nó không còn tạo hứng thú lớn cho các nhà địa chất.

Không có thông tin như vậy trong bài.

          C. It fails to explain why earthquakes occur = Nó thất bại trong việc giải thích tại sao động đất xảy ra.

The movement of the lithospheric plates is responsible for earthquakes, volcanoes, and the Earth's largest mountain ranges. = Sự di chuyển của các mảng thạch quyển chịu trách nhiệm cho những trận động đất, núi lửa, và các dãy núi lớn nhất của Trái Đất.

Như vậy lý thuyết đó đã thành công khi giải thích hoạt động của núi lửa chứ không phải thất bại.

          D. It refutes the theory of the existence of a supercontinent = Nó bác bỏ các lý thuyết về sự tồn tại của một siêu lục địa.

Không có thông tin như vậy trong bài.

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 43.The hard, rigid plates that form the outermost portion of the Earth are about 100 kilometers thick. These plates include both the Earth's crust and the upper mantle. The rocks of the crust are composed mostly of minerals with light elements, like aluminum and sodium, while the mantle contains some heavier elements, like iron and magnesium....
Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 43.

The hard, rigid plates that form the outermost portion of the Earth are about 100 kilometers thick. These plates include both the Earth's crust and the upper mantle. The rocks of the crust are composed mostly of minerals with light elements, like aluminum and sodium, while the mantle contains some heavier elements, like iron and magnesium. Together, the crust and upper mantle that form the surface plates are called the lithosphere. This rigid layer floats on the denser material of the lower mantle the way a wooden raft floats on a pond. The plates are supported by a weak, plastic layer of the lower mantle called the asthenosphere. Also like a raft on a pond, the lithospheric plates are carried along by slow currents in this more fluid layer beneath them.

With an understanding of plate tectonics, geologists have put together a new history for the Earth's surface. About 200 million years ago, the plates at the Earth's surface formed a “supercontinent” called Pangaea. When this supercontinent started to tear apart because of plate movement, Pangaea first broke into two large continental masses with a newly formed sea that grew between the land areas as the depression filled with water. The southern one — which included the modern continents of South America, Africa, Australia, and Antarctica — is called Gondwanaland. The northern one — with North America, Europe, and Asia — is called Laurasia. North America tore away from Europe about 180 million years ago, forming the northern Atlantic Ocean. Some of the lithospheric plates carry ocean floor and others carry land masses or a combination of the two types. The movement of the lithospheric plates is responsible for earthquakes, volcanoes, and the Earth's largest mountain ranges. Current understanding of the interaction between different plates explains why these occur where they do. For example, the edge of the Pacific Ocean has been called the “Ring of Fire” because so many volcanic eruptions and earthquakes happen there. Before the 1960's, geologists could not explain why active volcanoes and strong earthquakes were concentrated in that region. The theory of plate tectonics gave them an answer.

The author compares the relationship between the lithosphere and the asthenosphere to which of the following?

A. Lava flowing from a volcano

B. A boat floating on the water

C. A fish swimming in a pond

D. The erosion of rocks by running water

1
7 tháng 7 2018

Đáp án B

Thông tin: Also like a raft on a pond, the lithospheric plates are carried along by slow currents in this more fluid layer beneath them.

Dịch nghĩa: Cũng giống như một chiếc bè trên ao, những tấm thạch quyển được đưa đi bởi những dòng chảy chậm trong lớp chất lỏng hơn phía dưới chúng.

Như vậy phương án B. A boat floating on the water = một chiếc thuyền nổi trên mặt nước; là phương án chính xác nhất.

          A. Lava flowing from a volcano = Nham thạch tuôn trào từ một ngọn núi lửa.

          C. A fish swimming in a pond = Một con cá bơi trong nước.     

          D. The erosion of rocks by running water = Sự ăn mòn của đá bởi nước chảy.

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 43.The hard, rigid plates that form the outermost portion of the Earth are about 100 kilometers thick. These plates include both the Earth's crust and the upper mantle. The rocks of the crust are composed mostly of minerals with light elements, like aluminum and sodium, while the mantle contains some heavier elements, like iron and magnesium....
Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 43.

The hard, rigid plates that form the outermost portion of the Earth are about 100 kilometers thick. These plates include both the Earth's crust and the upper mantle. The rocks of the crust are composed mostly of minerals with light elements, like aluminum and sodium, while the mantle contains some heavier elements, like iron and magnesium. Together, the crust and upper mantle that form the surface plates are called the lithosphere. This rigid layer floats on the denser material of the lower mantle the way a wooden raft floats on a pond. The plates are supported by a weak, plastic layer of the lower mantle called the asthenosphere. Also like a raft on a pond, the lithospheric plates are carried along by slow currents in this more fluid layer beneath them.

With an understanding of plate tectonics, geologists have put together a new history for the Earth's surface. About 200 million years ago, the plates at the Earth's surface formed a “supercontinent” called Pangaea. When this supercontinent started to tear apart because of plate movement, Pangaea first broke into two large continental masses with a newly formed sea that grew between the land areas as the depression filled with water. The southern one — which included the modern continents of South America, Africa, Australia, and Antarctica — is called Gondwanaland. The northern one — with North America, Europe, and Asia — is called Laurasia. North America tore away from Europe about 180 million years ago, forming the northern Atlantic Ocean. Some of the lithospheric plates carry ocean floor and others carry land masses or a combination of the two types. The movement of the lithospheric plates is responsible for earthquakes, volcanoes, and the Earth's largest mountain ranges. Current understanding of the interaction between different plates explains why these occur where they do. For example, the edge of the Pacific Ocean has been called the “Ring of Fire” because so many volcanic eruptions and earthquakes happen there. Before the 1960's, geologists could not explain why active volcanoes and strong earthquakes were concentrated in that region. The theory of plate tectonics gave them an answer.

With which of the following topics is the passage mainly concerned?

A. The contributions of the theory of plate tectonics to geological knowledge

B. The mineral composition of the Earth's crust

C. The location of the Earth's major plates

D. The methods used by scientists to measure plate movement

1
14 tháng 6 2019

Đáp án A

Giải thích: Đoạn đầu của bài đọc giải thích về lý thuyết kiến tạo mảng. Đoạn còn lại nói về các tác dụng, đóng góp của lý thuyết này trong việc giải thích các hiện tượng địa tầng từ nhiên.

Phương án A. The contributions of the theory of plate tectonics to geological knowledge = Những đóng góp của lý thuyết kiến tạo mảng đối với kiến thức địa chất; là phương án nêu chủ đề của bài đọc chính xác nhất.

          B. The mineral composition of the Earth's crust = Các thành phần khoáng chất của vỏ Trái Đất.

The rocks of the crust are composed mostly of minerals with light elements, like aluminum and sodium, while the mantle contains some heavier elements, like iron and magnesium. = Các đá của lớp vỏ được cấu tạo chủ yếu là khoáng chất với các nguyên tố nhẹ, như nhôm và natri, trong khi lớp manti có chứa một số nguyên tố nặng hơn, như sắt và magiê.

Các thành phần khoáng chất của vỏ Trái Đất được nhắc đến để làm rõ lý thuyết kiến tạo mảng. Tuy nhiên đây không phải nội dung mang tính chủ đạo trong bài.

          C. The location of the Earth's major plates = Vị trí của các mảng lớn của Trái Đất.

The southern one - which included the modern continents of South America, Africa, Australia, and Antarctica - is called Gondwanaland. The northern one - with North America, Europe, and Asia - is called Laurasia. = Mảng phía nam - trong đó bao gồm các lục địa hiện đại Nam Mỹ, châu Phi, Úc và Nam Cực - được gọi là Gondwanaland. Mảng phía bắc - với Bắc Mỹ, châu Âu và châu Á - được gọi là Laurasia.

Đây là một phần của lý thuyết kết quả suy ra từ lý thuyết kiến tạo mảng chứ không phải nội dung mang tính chủ đạo của bài.

          D. The methods used by scientists to measure plate movement = Các phương pháp được sử dụng bởi các nhà khoa học để đo chuyển động mảng.

Không có thông tin như vậy trong bài.

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 43.The hard, rigid plates that form the outermost portion of the Earth are about 100 kilometers thick. These plates include both the Earth's crust and the upper mantle. The rocks of the crust are composed mostly of minerals with light elements, like aluminum and sodium, while the mantle contains some heavier elements, like iron and magnesium....
Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 43.

The hard, rigid plates that form the outermost portion of the Earth are about 100 kilometers thick. These plates include both the Earth's crust and the upper mantle. The rocks of the crust are composed mostly of minerals with light elements, like aluminum and sodium, while the mantle contains some heavier elements, like iron and magnesium. Together, the crust and upper mantle that form the surface plates are called the lithosphere. This rigid layer floats on the denser material of the lower mantle the way a wooden raft floats on a pond. The plates are supported by a weak, plastic layer of the lower mantle called the asthenosphere. Also like a raft on a pond, the lithospheric plates are carried along by slow currents in this more fluid layer beneath them.

With an understanding of plate tectonics, geologists have put together a new history for the Earth's surface. About 200 million years ago, the plates at the Earth's surface formed a “supercontinent” called Pangaea. When this supercontinent started to tear apart because of plate movement, Pangaea first broke into two large continental masses with a newly formed sea that grew between the land areas as the depression filled with water. The southern one — which included the modern continents of South America, Africa, Australia, and Antarctica — is called Gondwanaland. The northern one — with North America, Europe, and Asia — is called Laurasia. North America tore away from Europe about 180 million years ago, forming the northern Atlantic Ocean. Some of the lithospheric plates carry ocean floor and others carry land masses or a combination of the two types. The movement of the lithospheric plates is responsible for earthquakes, volcanoes, and the Earth's largest mountain ranges. Current understanding of the interaction between different plates explains why these occur where they do. For example, the edge of the Pacific Ocean has been called the “Ring of Fire” because so many volcanic eruptions and earthquakes happen there. Before the 1960's, geologists could not explain why active volcanoes and strong earthquakes were concentrated in that region. The theory of plate tectonics gave them an answer.

According to the passage, the lithospheric plates are given support by the

A. upper mantle

B. ocean floor

C. crust

D. asthenosphere

1
17 tháng 4 2017

Đáp án D

Thông tin: Together, the crust and upper mantle that form the surface plates are called the lithosphere … The plates are supported by a weak, plastic layer of the lower mantle called the asthenosphere.

Dịch nghĩa: Cùng với nhau, lớp vỏ và lớp manti trên tạo thành các mảng bề ​​mặt được gọi là thạch quyển ... Các mảng được hỗ trợ bởi một lớp nhựa yếu của lớp manti dưới gọi là quyển mềm.

Như vậy phương án D. asthenosphere là phương án chính xác nhất.

          A. upper mantle = lớp manti trên

          B. ocean floor = đáy đại dương

          C. crust = lớp vỏ Trái Đất

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 43.The hard, rigid plates that form the outermost portion of the Earth are about 100 kilometers thick. These plates include both the Earth's crust and the upper mantle. The rocks of the crust are composed mostly of minerals with light elements, like aluminum and sodium, while the mantle contains some heavier elements, like iron and magnesium....
Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 43.

The hard, rigid plates that form the outermost portion of the Earth are about 100 kilometers thick. These plates include both the Earth's crust and the upper mantle. The rocks of the crust are composed mostly of minerals with light elements, like aluminum and sodium, while the mantle contains some heavier elements, like iron and magnesium. Together, the crust and upper mantle that form the surface plates are called the lithosphere. This rigid layer floats on the denser material of the lower mantle the way a wooden raft floats on a pond. The plates are supported by a weak, plastic layer of the lower mantle called the asthenosphere. Also like a raft on a pond, the lithospheric plates are carried along by slow currents in this more fluid layer beneath them.

With an understanding of plate tectonics, geologists have put together a new history for the Earth's surface. About 200 million years ago, the plates at the Earth's surface formed a “supercontinent” called Pangaea. When this supercontinent started to tear apart because of plate movement, Pangaea first broke into two large continental masses with a newly formed sea that grew between the land areas as the depression filled with water. The southern one — which included the modern continents of South America, Africa, Australia, and Antarctica — is called Gondwanaland. The northern one — with North America, Europe, and Asia — is called Laurasia. North America tore away from Europe about 180 million years ago, forming the northern Atlantic Ocean. Some of the lithospheric plates carry ocean floor and others carry land masses or a combination of the two types. The movement of the lithospheric plates is responsible for earthquakes, volcanoes, and the Earth's largest mountain ranges. Current understanding of the interaction between different plates explains why these occur where they do. For example, the edge of the Pacific Ocean has been called the “Ring of Fire” because so many volcanic eruptions and earthquakes happen there. Before the 1960's, geologists could not explain why active volcanoes and strong earthquakes were concentrated in that region. The theory of plate tectonics gave them an answer.

The paragraph following the passage most probably discusses

A. why certain geological events happen where they do

B. how geological occurrences have changed over the years

C. the most unusual geological developments in the Earth's history

D. the latest innovations in geological measurement

1
28 tháng 8 2017

Đáp án A

Giải thích: Ý lớn cuối cùng của đoạn cuối là Current understanding of the interaction between different plates explains why these occur where they do. = Sự hiểu biết hiện tại của sự tương tác giữa các mảng khác nhau giải thích tại sao những hiện tượng xảy ra nơi chúng xảy ra. Do đó đoạn tiếp theo có khả năng lướn là sẽ nói sâu hơn vào ý này.

Phương án A. why certain geological events happen where they do = tại sao một số sự kiện địa chất nhất định xảy ra ở nói chúng xảy ra, là phương án chính xác nhất.

          B. how geological occurrences have changed over the years = các sự kiện địa chất đã thay đổi như thế nào trong những năm qua.

          C. the most unusual geological developments in the Earth's history = sự phát triển địa chất bất thường nhất trong lịch sử Trái Đất

          D. the latest innovations in geological measurement = những cải tiến mới nhất trong đo lường địa chất.

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 43.The hard, rigid plates that form the outermost portion of the Earth are about 100 kilometers thick. These plates include both the Earth's crust and the upper mantle. The rocks of the crust are composed mostly of minerals with light elements, like aluminum and sodium, while the mantle contains some heavier elements, like iron and magnesium....
Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 43.

The hard, rigid plates that form the outermost portion of the Earth are about 100 kilometers thick. These plates include both the Earth's crust and the upper mantle. The rocks of the crust are composed mostly of minerals with light elements, like aluminum and sodium, while the mantle contains some heavier elements, like iron and magnesium. Together, the crust and upper mantle that form the surface plates are called the lithosphere. This rigid layer floats on the denser material of the lower mantle the way a wooden raft floats on a pond. The plates are supported by a weak, plastic layer of the lower mantle called the asthenosphere. Also like a raft on a pond, the lithospheric plates are carried along by slow currents in this more fluid layer beneath them.

With an understanding of plate tectonics, geologists have put together a new history for the Earth's surface. About 200 million years ago, the plates at the Earth's surface formed a “supercontinent” called Pangaea. When this supercontinent started to tear apart because of plate movement, Pangaea first broke into two large continental masses with a newly formed sea that grew between the land areas as the depression filled with water. The southern one — which included the modern continents of South America, Africa, Australia, and Antarctica — is called Gondwanaland. The northern one — with North America, Europe, and Asia — is called Laurasia. North America tore away from Europe about 180 million years ago, forming the northern Atlantic Ocean. Some of the lithospheric plates carry ocean floor and others carry land masses or a combination of the two types. The movement of the lithospheric plates is responsible for earthquakes, volcanoes, and the Earth's largest mountain ranges. Current understanding of the interaction between different plates explains why these occur where they do. For example, the edge of the Pacific Ocean has been called the “Ring of Fire” because so many volcanic eruptions and earthquakes happen there. Before the 1960's, geologists could not explain why active volcanoes and strong earthquakes were concentrated in that region. The theory of plate tectonics gave them an answer.

According to the passage, the northern Atlantic Ocean was formed when

A. Pangaea was created

B. plate movement ceased

C. Gondwanaland collided with Pangaea

D. parts of Laurasia separated from each other

1
22 tháng 8 2019

Đáp án D

Giải thích: North America tore away from Europe about 180 million years ago, forming the northern Atlantic Ocean.

Dịch nghĩa: Bắc Mỹ tách ra từ châu Âu khoảng 180 triệu năm trước, tạo thành khu vực phía Bắc của Đại Tây Dương.

Như vậy phái Bắc Đại Tây Dương được hình thành do sự phân tách một lục địa làm hai phần. Phương án D. parts of Laurasia separated from each other = các phần của Laurasia phân tách khỏi nhau; là phương án chính xác nhất.

          A. Pangaea was created = Pangaea được tạo ra

          B. plate movement ceased = chuyển động mảng dừng lại

          C. Gondwanaland collided with Pangaea = Gondwanaland đâm vào Pangaea