9. Magma is the liquid rock inside a volcano, but lava is magma that ……… a volcano.A. flows B.flows into C.flows out D. flows out of10. In some area, human ………...

76. The tallest mountain in the USA is Mt McKinley, located in the state of ………. A. Alaska B.California C.Florida D.Washington 77. Magma is the liquid rock inside a volcano, but lava is magma that ……… a volcano. A. flows B.flows into C.flows out D. flows out of 78. In some area, human ……… can be a contributing factor in causing landslides A. acts B.actions C.acting D.activities 79. A soft, loose soil may ………… more intensely than hard rock at the same distance from the same earthquake. A....

1

ST

Sun Trần

3 tháng 1 2022

9. Magma is the liquid rock inside a volcano, but lava is magma that ……… a volcano.

A. flows B.flows into C.flows out D. flows out of

10. In some area, human ……… can be a contributing factor in causing landslides

A. acts B.actions C.acting D.activities

13. A soft, loose soil may ………… more intensely than hard rock at the same distance from the same earthquake.

A. erupt B.rage C.shake D.collapse

14. A non-native speaker most likely can recognise the ………… - the non-verbal communication.

A. second language B.official language C.sign language D.body language

15. The facial expression for happiness, sadness, anger, surprise, fear, and disgust are the same across …………

A. languages B.cultures C.habits D.people

16. It was nice of her to let me …………. her laptop

A. borrow B.to borrow C.borrowing D.to borrow

17. Neptune is bright blue ………… it is named after the Roman God of the sea.

A. because B.but C.so D.or

18. Mars is called the red plannet due to its ………….. surface

A. red B.redder C.reddest D.reddish

Đúng(1)

MH

Mạc Hy

18 tháng 2 2020

76. The tallest mountain in the USA is Mt McKinley, located in the state of ………. A. Alaska B.California C.Florida D.Washington 77. Magma is the liquid rock inside a volcano, but lava is magma that ……… a volcano. A. flows B.flows into C.flows out D. flows out of 78. In some area, human ……… can be a contributing factor in causing landslides A. acts B.actions C.acting D.activities 79. A soft, loose soil may ………… more intensely than hard rock at the same distance from the same...

0

MH

Mạc Hy

18 tháng 2 2020

* 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 43 to 50. Most volcanoes are found along an imaginary belt, called the Ring of Fire, that encircles the Pacific Ocean. However, volcanic activity takes place in many far-flung regions of the world such as Hawaii, Iceland, Europe, and even the floor of the earth’s oceans. The leading theory as to why volcanic activity, as well as earthquakes, takes...

0

AD

Ẩn Danh

12 tháng 3 2023

Reorder the words to make correct sentences

1. molten rock / Magma / deep / is / inside / the / volcano / .

#Tiếng anh lớp 5

1

NN

Nguyễn Ngọc Thiện Nhân

12 tháng 3 2023

Magma is molten rock deep inside the volcano

Đúng(2)

LQ

Lê Quỳnh Anh

5 tháng 9 2018

* 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 43 to 50.

Most volcanoes are found along an imaginary belt, called the Ring of Fire, that encircles the Pacific Ocean. However, volcanic activity takes place in many far-flung regions of the world such as Hawaii, Iceland, Europe, and even the floor of the earth’s oceans. The leading theory as to why volcanic activity, as well as earthquakes, takes place when and where it does is called the theory of “plate tectonics”. The theory holds that the outer shell of the earth is divided into many different rigid sections of rock, called plates. These plates are not static, they are in continuous motion over a layer of partly melted rock. While their movement may appear insignificant, at only several inches per year, it is not. Indeed, the collisions between plates caused by this almost imperceptible movement can have catastrophic consequences. Volcanic activity and earthquakes are concentrated near the boundaries of these giant, moving plates.

The majority of volcanoes are formed at te point where two plates collide. One of the plates is forced underneath the other. As the plate sinks, the earth’s heat and the friction of the movement cause a portion of the sinking plate to melt. This melted portion of plate is called magma, and when it reaches the earth’s surface it becomes a volcano. Volcanoes can also be created when two plates begin to diverge. Then, magma from below the earth’s crust moves up to fill the void between the two plates. Large quantities of lava spill out from the void. Volcanoes of this type usually are found not on land, but on the ocean floor. In extreme instances this can lead to the formation of gigantic, sunken mountain ranges like Mid-Atlantic Ridge that spans nearly the entire length of the Atlantic Ocean. The theory of plate tectonics also explains why some volcanic activity takes place so far from any known plate boundaries. Basically, these volcanoes are the result of huge column of magma, or plumes, that rise up and break through the surface of the earth.

The Ring of Fire is_________.

A. The Mid - Atlantic Ocean

B. The place where the highest concentration of volcanoes is found.

C. An island in the Pacific Ocean

D. Hawaii

1

DH

Dương Hoàn Anh

5 tháng 9 2018

Câu đề bài: Vành đai lửa Thái Bình Dương là ______.

Đáp án B. Nơi tập trung nhiều núi lửa nhất

Các đáp án còn lại:

A. Miền trung - Đại Tây Dương

C. Một hòn đảo của Thái Bình Dương

D. Hawaii

Thông tin trong bài:

Most volcanoes are found along an imaginary belt, called the Ring of Fỉre, that encircles the Paciftc Ocean.

—» Hầu hết các núi lửa được tìm thấy dọc theo một vành đai tưởng tượng, được gọi là Vành đai lửa, bao quanh Thái Bình Dương.

* 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 43 to 50. Most volcanoes are found along an imaginary belt, called the Ring of Fire, that encircles the Pacific Ocean. However, volcanic activity takes place in many far-flung regions of the world such as Hawaii, Iceland, Europe, and even the floor of the earth’s oceans. The leading theory as to why volcanic activity, as well as earthquakes, takes...

LQ

Lê Quỳnh Anh

29 tháng 11 2019

* 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 43 to 50.

Most volcanoes are found along an imaginary belt, called the Ring of Fire, that encircles the Pacific Ocean. However, volcanic activity takes place in many far-flung regions of the world such as Hawaii, Iceland, Europe, and even the floor of the earth’s oceans. The leading theory as to why volcanic activity, as well as earthquakes, takes place when and where it does is called the theory of “plate tectonics”. The theory holds that the outer shell of the earth is divided into many different rigid sections of rock, called plates. These plates are not static, they are in continuous motion over a layer of partly melted rock. While their movement may appear insignificant, at only several inches per year, it is not. Indeed, the collisions between plates caused by this almost imperceptible movement can have catastrophic consequences. Volcanic activity and earthquakes are concentrated near the boundaries of these giant, moving plates.

The majority of volcanoes are formed at te point where two plates collide. One of the plates is forced underneath the other. As the plate sinks, the earth’s heat and the friction of the movement cause a portion of the sinking plate to melt. This melted portion of plate is called magma, and when it reaches the earth’s surface it becomes a volcano. Volcanoes can also be created when two plates begin to diverge. Then, magma from below the earth’s crust moves up to fill the void between the two plates. Large quantities of lava spill out from the void. Volcanoes of this type usually are found not on land, but on the ocean floor. In extreme instances this can lead to the formation of gigantic, sunken mountain ranges like Mid-Atlantic Ridge that spans nearly the entire length of the Atlantic Ocean. The theory of plate tectonics also explains why some volcanic activity takes place so far from any known plate boundaries. Basically, these volcanoes are the result of huge column of magma, or plumes, that rise up and break through the surface of the earth.

A. Thrown out

B. Unimportant

C. Distant

D. Inaccessible

1

DH

Dương Hoàn Anh

29 tháng 11 2019

Câu đề bài: Cụm từ "far-flung " trong dòng 3 gần nhất nghĩa với __________.

Far-flung = distant or remote: bao la, mênh mông.

C. xa cách

Các đáp án còn lại:

A. ném đi B. Không quan trọng

D. Không thể tiếp cận

Thông tin trong bài:

However, volcanic activity takes place in many far-ftung regions of the world such as Hawai, Iceland, Europe, and even the floor of the earth’s oceans.

—» Tuy nhiên, hoạt động núi lửa diễn ra ở nhiều khu vực xa xôi của thế giới như Hawaii, Iceland, châu Âu hay ngay cả thềm các dại dương.

I. Circle the best answer: 1. Oil spills ………. ships in oceans and rivers lead to the death of many aquatic animals and plants. A. of B.from C.with D.toward 2. Students are more aware …………. protecting the environment. A. to B.in C.of D.with 3. Mi and Nick have decided to give a/ an ………….. on water pollution to the class. A. idea B.improvement C.illustration D.presentation 4. Factories dump ……….. waste into lakes and rivers A. industrial B.medical C.household D.farm 5. Farms using …………...

HC

Huyền Chii

29 tháng 1 2018

I. Circle the best answer:

1. Oil spills ………. ships in oceans and rivers lead to the death of many aquatic animals and plants.

A. of B.from C.with D.toward

2. Students are more aware …………. protecting the environment.

A. to B.in C.of D.with

3. Mi and Nick have decided to give a/ an ………….. on water pollution to the class.

A. idea B.improvement C.illustration D.presentation

4. Factories dump ……….. waste into lakes and rivers

A. industrial B.medical C.household D.farm

5. Farms using ………… to kill insects and herbicides to kill weeds can also lead to water pollution.

A. fertilizer B.chemical C.pesticides D.dynamite

6.Human can even die if they drink ………… water.

A. contaminate B.contamination C.contaminant D.contaminated

7. Scotland only shares a border with ………….

A. Wales B.Northern Ireland C.England D.Britain

8.The name Canada comes from the word “kanata” which means “settlement” or ……… in the language of the St Lawrence Iroquoians.

A. country B.village C.town D.nation

9. The tallest mountain in the USA is Mt McKinley, located in the state of ……….

A. Alaska B.California C.Florida D.Washington

10. Magma is the liquid rock inside a volcano, but lava is magma that ……… a volcano.

A. flows B.flows into C.flows out D. flows out of

11. In some area, human ……… can be a contributing factor in causing landslides

A. acts B.actions C.acting D.activities

12. A soft, loose soil may ………… more intensely than hard rock at the same distance from the same earthquake.

A. erupt B.rage C.shake D.collapse

13. A non-native speaker most likely can recognise the ………… - the non-verbal communication.

A. second language B.official language C.sign language D.body language

14. The facial expression for happiness, sadness, anger, surprise, fear, and disgust are the same across …………

A. languages B.cultures C.habits D.people

15. It was nice of her to let me …………. her laptop

A. borrow B.to borrow C.borrowing D.to borrow

16. Neptune is bright blue ………… it is named after the Roman God of the sea.

A. because B.but C.so D.or

17. Mars is called the red plannet due to its ………….. surface

A. red B.redder C.reddest D.reddish

II. Word form

1. A number of cleaning products contain (harm)………….. chemicals.

2. (survive)……………. of the deadly Nepal earthquake have told the horror of the moment when it struck, leaving more than 3,000 dead.

3. The storm caused (extension) ………….. damage to property.

4. Many houses and public buildings were destroyed or flooded and thousands of people were left (home) ………….

5. Natural disasters can force people to leave their homes so you should also become familiar with the (guide)……….. for evacuation.

III. Supply the correct word form.

1. You …………… must work harder and harder for the coming examinations. (real)

2. What is your ……………? (old)

3. She worked …………… so that she could pass the final exams. (hardly)

4. The baby doesn’t look …………… She is going to cry. (unhappily)

5. You should do something to help …………… people. (home)

IV. Combine each pair of sentences into a compound sentence.

1. A man is standing near the window. He is my brother.

………………………………………………………………………………………

2. The bridge is very small. It joins the two mountainous tribes.

………………………………………………………………………………………

3. Do you know the man? The man is wearing black sunglasses.

………………………………………………………………………………………

4. A woman is cooking in the kitchen. She is my aunt.

……………………………………………………………………………………

2

H2

Học 24h

30 tháng 1 2018

I. Circle the best answer:

1. Oil spills ………. ships in oceans and rivers lead to the death of many aquatic animals and plants.

A. of B.from C.with D.toward

2. Students are more aware …………. protecting the environment.

A. to B.in C.of D.with

3. Mi and Nick have decided to give a/ an ………….. on water pollution to the class.

A. idea B.improvement C.illustration D.presentation

4. Factories dump ……….. waste into lakes and rivers

A. industrial B.medical C.household D.farm

5. Farms using ………… to kill insects and herbicides to kill weeds can also lead to water pollution.

A. fertilizer B.chemical C.pesticides D.dynamite

6.Human can even die if they drink ………… water.

A. contaminate B.contamination C.contaminant D.contaminated

7. Scotland only shares a border with ………….

A. Wales B.Northern Ireland C.England D.Britain

8.The name Canada comes from the word “kanata” which means “settlement” or ……… in the language of the St Lawrence Iroquoians.

A. country B.village C.town D.nation

9. The tallest mountain in the USA is Mt McKinley, located in the state of ……….

A. Alaska B.California C.Florida D.Washington

10. Magma is the liquid rock inside a volcano, but lava is magma that ……… a volcano.

A. flows B.flows into C.flows out D. flows out of

11. In some area, human ……… can be a contributing factor in causing landslides

A. acts B.actions C.acting D.activities

12. A soft, loose soil may ………… more intensely than hard rock at the same distance from the same earthquake.

A. erupt B.rage C.shake D.collapse

13. A non-native speaker most likely can recognise the ………… - the non-verbal communication.

A. second language B.official language C.sign language D.body language

14. The facial expression for happiness, sadness, anger, surprise, fear, and disgust are the same across …………

A. languages B.cultures C.habits D.people

15. It was nice of her to let me …………. her laptop

A. borrow B.to borrow C.borrowing D.to borrow

16. Neptune is bright blue ………… it is named after the Roman God of the sea.

A. because B.but C.so D.or

17. Mars is called the red plannet due to its ………….. surface

A. red B.redder C.reddest D.reddish

II. Word form

1. A number of cleaning products contain (harm) harmful chemicals.

2. (survive) Survival of the deadly Nepal earthquake have told the horror of the moment when it struck, leaving more than 3,000 dead.

3. The storm caused (extension) extensive damage to property.

4. Many houses and public buildings were destroyed or flooded and thousands of people were left (home) homeless.

5. Natural disasters can force people to leave their homes so you should also become familiar with the (guide) guidance for evacuation.

III. Supply the correct word form.

1. You really must work harder and harder for the coming examinations. (real)

2. What is your age? (old)

3. She worked hard so that she could pass the final exams. (hardly)

4. The baby doesn’t look happy. She is going to cry. (unhappily)

5. You should do something to help homeless people. (home)

IV. Combine each pair of sentences into a compound sentence.

1. A man is standing near the window. He is my brother.

The man who is standing near the window is my brother.

2. The bridge is very small. It joins the two mountainous tribes.

The bridge which joins the two moutainous tribes is very small.

3. Do you know the man? The man is wearing black sunglasses.

Do you know the man who is wearing black sunglasses?

4. A woman is cooking in the kitchen. She is my aunt.

The woman who is cooking in the kitchen is my aunt.

B3

BTS >3

29 tháng 1 2018

1) Oil spills...........ships in oceans and rivers lead to the death of many aquatic animals and plants

a.of b.from c.with d.toward

2) Students are more aware............protecting the environment

a.to b.in c.of d.with

3) Mi and Nick have decided to give a/an............on water pollution to the class

a.idea b.improvement c.illustration d.presentation

4) Factories dump............waste into lakes and rivers

a.industrial b.medical c.household c.farm

5) Farm using............to kill insects and herbicides to kill weeds can also lead to water pollution

a.fertilizer b.chemical c.pesticcides d.dynamite

* 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 43 to 50. Most volcanoes are found along an imaginary belt, called the Ring of Fire, that encircles the Pacific Ocean. However, volcanic activity takes place in many far-flung regions of the world such as Hawaii, Iceland, Europe, and even the floor of the earth’s oceans. The leading theory as to why volcanic activity, as well as earthquakes, takes...

LQ

Lê Quỳnh Anh

5 tháng 6 2018

* 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 43 to 50.

Most volcanoes are found along an imaginary belt, called the Ring of Fire, that encircles the Pacific Ocean. However, volcanic activity takes place in many far-flung regions of the world such as Hawaii, Iceland, Europe, and even the floor of the earth’s oceans. The leading theory as to why volcanic activity, as well as earthquakes, takes place when and where it does is called the theory of “plate tectonics”. The theory holds that the outer shell of the earth is divided into many different rigid sections of rock, called plates. These plates are not static, they are in continuous motion over a layer of partly melted rock. While their movement may appear insignificant, at only several inches per year, it is not. Indeed, the collisions between plates caused by this almost imperceptible movement can have catastrophic consequences. Volcanic activity and earthquakes are concentrated near the boundaries of these giant, moving plates.

The majority of volcanoes are formed at te point where two plates collide. One of the plates is forced underneath the other. As the plate sinks, the earth’s heat and the friction of the movement cause a portion of the sinking plate to melt. This melted portion of plate is called magma, and when it reaches the earth’s surface it becomes a volcano. Volcanoes can also be created when two plates begin to diverge. Then, magma from below the earth’s crust moves up to fill the void between the two plates. Large quantities of lava spill out from the void. Volcanoes of this type usually are found not on land, but on the ocean floor. In extreme instances this can lead to the formation of gigantic, sunken mountain ranges like Mid-Atlantic Ridge that spans nearly the entire length of the Atlantic Ocean. The theory of plate tectonics also explains why some volcanic activity takes place so far from any known plate boundaries. Basically, these volcanoes are the result of huge column of magma, or plumes, that rise up and break through the surface of the earth.

The word “static” is closest in meaning to_________.

A. rock

B. well- defined

C. observable

D. unmovable

1

DH

Dương Hoàn Anh

5 tháng 6 2018

Câu đề bài: Từ “static ” gần nghĩa nhất với___________.

Static (adj): tĩnh, không chuyển động

Đáp án D: không di chuyển

Các đáp án còn lại:

A. đá

B. rành mạch

C. có thể quan sát được

Thông tin trong bài:

The theory holds that the outer shell of the earth is divided into many different rigid sections of rock, called plates. These plates are not static, they are in continuous motion over a layer of partly melted rock.

—» Học thuyết cho rằng vỏ ngoài của Trái đất được chia thành nhiều phần đá rắn khác nhau được gọi là các mảng kiến tạo.

* 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 43 to 50. Most volcanoes are found along an imaginary belt, called the Ring of Fire, that encircles the Pacific Ocean. However, volcanic activity takes place in many far-flung regions of the world such as Hawaii, Iceland, Europe, and even the floor of the earth’s oceans. The leading theory as to why volcanic activity, as well as earthquakes, takes...

LQ

Lê Quỳnh Anh

21 tháng 3 2017

* 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 43 to 50.

Most volcanoes are found along an imaginary belt, called the Ring of Fire, that encircles the Pacific Ocean. However, volcanic activity takes place in many far-flung regions of the world such as Hawaii, Iceland, Europe, and even the floor of the earth’s oceans. The leading theory as to why volcanic activity, as well as earthquakes, takes place when and where it does is called the theory of “plate tectonics”. The theory holds that the outer shell of the earth is divided into many different rigid sections of rock, called plates. These plates are not static, they are in continuous motion over a layer of partly melted rock. While their movement may appear insignificant, at only several inches per year, it is not. Indeed, the collisions between plates caused by this almost imperceptible movement can have catastrophic consequences. Volcanic activity and earthquakes are concentrated near the boundaries of these giant, moving plates.

The majority of volcanoes are formed at te point where two plates collide. One of the plates is forced underneath the other. As the plate sinks, the earth’s heat and the friction of the movement cause a portion of the sinking plate to melt. This melted portion of plate is called magma, and when it reaches the earth’s surface it becomes a volcano. Volcanoes can also be created when two plates begin to diverge. Then, magma from below the earth’s crust moves up to fill the void between the two plates. Large quantities of lava spill out from the void. Volcanoes of this type usually are found not on land, but on the ocean floor. In extreme instances this can lead to the formation of gigantic, sunken mountain ranges like Mid-Atlantic Ridge that spans nearly the entire length of the Atlantic Ocean. The theory of plate tectonics also explains why some volcanic activity takes place so far from any known plate boundaries. Basically, these volcanoes are the result of huge column of magma, or plumes, that rise up and break through the surface of the earth.

The word “imperceptible" is closest in meaning to____________.

A. dangerous

B. invisible

C. furious

D. geographic

1

DH

Dương Hoàn Anh

21 tháng 3 2017

Câu đề bài: Từ "imperceptible" gần nghĩa nhất với ___________.

Imperceptible (adj): không thể trông thấy

Đáp án B: vô hình

Các đáp án còn lại:

A. nguy hiểm C. giận dữ D. địa lí

Thông tin trong bài:

lndeed. the collisions between plates caused by this almost imperceptiblel movement can have catastrophie consequenees.

Thực tế thì, sự va chạm giữa các mảng kiến tạo gây ra bởi chuyển động hầu như vô hình này có thể có những hệ quả thảm khốc.

* 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 43 to 50. Most volcanoes are found along an imaginary belt, called the Ring of Fire, that encircles the Pacific Ocean. However, volcanic activity takes place in many far-flung regions of the world such as Hawaii, Iceland, Europe, and even the floor of the earth’s oceans. The leading theory as to why volcanic activity, as well as earthquakes, takes...

LQ

Lê Quỳnh Anh

27 tháng 5 2018

* 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 43 to 50.

Most volcanoes are found along an imaginary belt, called the Ring of Fire, that encircles the Pacific Ocean. However, volcanic activity takes place in many far-flung regions of the world such as Hawaii, Iceland, Europe, and even the floor of the earth’s oceans. The leading theory as to why volcanic activity, as well as earthquakes, takes place when and where it does is called the theory of “plate tectonics”. The theory holds that the outer shell of the earth is divided into many different rigid sections of rock, called plates. These plates are not static, they are in continuous motion over a layer of partly melted rock. While their movement may appear insignificant, at only several inches per year, it is not. Indeed, the collisions between plates caused by this almost imperceptible movement can have catastrophic consequences. Volcanic activity and earthquakes are concentrated near the boundaries of these giant, moving plates.

The majority of volcanoes are formed at te point where two plates collide. One of the plates is forced underneath the other. As the plate sinks, the earth’s heat and the friction of the movement cause a portion of the sinking plate to melt. This melted portion of plate is called magma, and when it reaches the earth’s surface it becomes a volcano. Volcanoes can also be created when two plates begin to diverge. Then, magma from below the earth’s crust moves up to fill the void between the two plates. Large quantities of lava spill out from the void. Volcanoes of this type usually are found not on land, but on the ocean floor. In extreme instances this can lead to the formation of gigantic, sunken mountain ranges like Mid-Atlantic Ridge that spans nearly the entire length of the Atlantic Ocean. The theory of plate tectonics also explains why some volcanic activity takes place so far from any known plate boundaries. Basically, these volcanoes are the result of huge column of magma, or plumes, that rise up and break through the surface of the earth.

Which of the following is true about volcanoes formed at the point at which two plates diverged?

A. Most volcanoes are formed in this way

B. Plate tectonic theory is not able to explain it

C. The Mid- Atlantic Ridge is an example of this

D. They do not involve magma

1

DH

Dương Hoàn Anh

27 tháng 5 2018

Chọn B Câu đề bài: Điều nào sau đây nói đúng về núi lửa hình thành tại điểm mà tại đó hai mảng kiến tạo phân kỳ?

Đáp án C: Dãy núi trung du Đại Tây dương là một ví dụ tiêu biểu

Các đáp án còn lại:

A. Hầu hết các núi lửa hình thành theo cách này

B. Học thuyết kiến tạo mảng không thể giải thích được

D. Chúng không bao gồm đá nóng chảy

Thông tin trong bài:

Volcanoes can also be created when two plates begin to diverge. Then, magmafram below the earth’s crust moves up to fill the void between the two plates. Large quantities of lava spill out fiom the void. Volcanoes of this type usually are found not on land. but on the ocean floor. In extreme instances this can lead to the formation of gigantic, sunken mountain ranges like Mid- Atlantic Ridge that spans nearly the entire length of the Atlantic Ocean.

Núi lửa cũng có thể được tạo ra khi hai mảng kiến tạo bắt đầu phân kì. Sau đó, magma từ bên dưới lớp vỏ trái đất di chuyển lên để lấp đầy khoảng trống giữa hai mảng. Một lượng lớn dung nham tràn ra từ khoảng trống. Các loại núi lửa thuộc loại này thường không được tìm thấy trên đất liền, mà ở thềm đại dương. Trong những trường hợp cùng cực, điều này có thể dẫn đến sự hình thành các dãy núi khổng lồ, trũng như Mid-Atlantic Ridge (dãy núi trung du Đại Tây dương) trải dài gần như toàn bộ chiều dài của Đại Tây Dương.