Volcanoes

Q.

Write some facts about igneous rocks.

Q.

What are some common uses for igneous rocks?

Q.

Tick the correct answer. The rock which is made up of molten magma is

1. Igneous

2. Sedimentary

3. Metamorphic

4. None of these

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

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

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

Q. What do you think is the difference between lava and magma?

1. Magma is nothing but lava mixed with chemicals from the atmosphere.
2. Magma is lava that reaches the surface of the Earth.
3. Lava and magma are synonyms.
4. Lava is magma that reaches the surface of the Earth.

Q. Which among the following statements is a sign that a volcanic eruption is going to take place from a volcano?

1. Increase in water level of the sea.
2. Occurence of a rainbow.
3. Ash coming out followed by darkness.
4. A bright sunny day.

Q. Which among the following can be defined as a vent in the Earth's crust from which the molten rock materials errupt?

1. Volcano
2. Landslide
3. Earthquake
4. Avalanche

Q. <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> 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. <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> When the molten material of the mantle cools down, it can form _____________.

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

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

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

Q. <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> 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 do you think is the difference between lava and magma?

1. Magma is nothing but lava mixed with chemicals from the atmosphere.
2. Magma is lava that reaches the surface of the Earth.
3. Lava and magma are synonyms.
4. Lava is magma that reaches the surface of the Earth.

Q. <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> 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. Magma chamber
2. Vents
3. Volcanic cone
4. Crater

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

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

Q. Volcanoes are usually created when two lithospheric come together.

1. crusts
2. plates
3. cores

Q. Read the following sentences and choose the correct option that best describes these sentences:
1. Active volcanoes are potent and energetic.
2. Dormant volcanoes are volcanoes that have not erupted in a long time but still have the potential to explode.

1. Sentence 1 is wrong and sentence 2 is correct.
2. Sentence 1 is correct and sentence 2 is wrong.
3. Both sentences are wrong.
4. Both sentences are correct.

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. The volcanoes can be formed when two lithospheric plates collide with each other.

1. True
2. False

Q. Select the correct pairs with regard to the types of volcanoes.

1. Active
2. Erupts often
3. Extinct
4. 
   Sleeping
5. Dead
6. Dormant

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

Q. Which among the following processes allows magma to change its state when it rises to the Earth's surface?

1. Cooling
2. Weathering
3. Heating
4. Melting

Q. The volcanoes can be formed when two lithospheric plates collide with each other.

1. True
2. False

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

1. Tanzania
2. Philippines
3. Italy