Volcanoes

Q.

Which is caused by the sudden movements of the earth?

1. Volcano

2. Folding

3. Flood plain

4. Earthquake

Q.

Why are igneous rocks called primary rocks?

Q. A ________ is an opening in the earth’s crust through which molten material from the mantle escapes to the Earth’s surface.

1. earthquake
2. volcano
3. flood
4. tsunami

Q.

What are igneous rocks and their types?

Q. Nearly 80% of the world's volcanoes are situated around the Pacific Ocean. This zone is known as 'The Pacific Ring of Fire. 'What are volcanoes and how are they formed?' How are they useful to man?

Q.

Tremors on the earth can also be caused by the eruption of a volcano.

1. True
2. False

Q. Which of the following types of rock is formed after the cooling of the molten lava?

1. Metamorphic rock
2. Sedimantary rock
3. Strata rock
4. Igneous rocks

Q. From a small depression in a mountain, smoke, fume and magma is coming out. Through which part of the volcano, does the magma flow out?

1. Crater
2. Magma chamber
3. Vents
4. Volcanic cone

Q. From a small depression in a mountain, smoke, fume and magma is coming out. Which part of the volcano are these gaps?

1. Crater
2. Magma chamber
3. Vents
4. Volcanic cone

Q. The molten material from the mantle is called ________ when it is inside the volcano, and ______ when it shoots out of the volcano.

1. Magma
2. Focus
3. Lava
4. Coal

Q. When the molten material of the mantle cools down, it can form _____________.

1. oceans
2. agriculture fields
3. rivers
4. igneous rocks

Q. The molten material from the mantle is called ________ when it is inside the volcano, and ______ when it shoots out of the volcano.

1. magma
2. focus
3. lava
4. coal

Q. A ________ is an opening in the Earth’s crust through which molten material from the mantle escapes to the Earth’s surface.

1. Earthquake
2. Volcano
3. Flood
4. Tsunami

Q.

Why does it hotter as we go deeper into the earth?

why is the inner core of the earth solid and he outer core liquid? In fact the inner core should be liquid as it is hotter.

Q. A ________ is an opening in the earth’s crust through which molten material from the mantle escapes to the Earth’s surface.

1. Flood
2. Tsunami
3. Earthquake
4. Volcano

Q. When the molten material of the mantle cools down, it can form _____________.

1. rivers
2. igneous rocks
3. oceans
4. agriculture fields

Q. Match the name of the volcanoes along with their locations:

1. Tanzania
2. Philippines
3. Italy

Q. Which of the following types of rock is formed after the cooling of the molten lava?

1. Igneous rocks
2. Strata rock
3. Metamorphic rock
4. Sedimantary rock

Q. Assertion [A]: Pressure cookers are similar to volcanoes.

Reason [R]: Pressure is built up in cookers and volcanoes, and released through a vent.

1. [A] is true but [R] is false.
2. [A] and [R] are false.
3. [A] and [R] are true and [R] is the correct justification for [A].
4. [A] and [R] are true but [R] is not the correct justification for [A].