Volcanic eruptions

What causes the explosion of a bottle of cola?

• Shaking the bottle

• Opening the bottle

• Both a and b

What is the liquid rock under the Earth's surface called?

• Lava

• Magma

• Basalt

What is the temperature range of magma?

• 500°C-1000°C

• 700°C-1300°C

• 900°C-1500°C

What forms inside the earth due to the formation of magma?

• Caves

• Oceans

• Mountains

What is the name of the hole through which gas and magma leave the Earth during a volcanic eruption?

• Chamber

• Crater

• Magma

What do we often see coming out of the crater before a volcanic eruption?

• Ash clouds

• Steam

• Lava

What happens when pieces of rock fall into the magma?

• They melt

• They become hard

• They create gas

What happens when the pressure of the gas inside the earth is very high?

• Earthquake

• Tornado

• Volcanic eruption

What is the source of the heat under the Earth's surface?

• Sun

• Heat from the core

• Volcanic activity

What do we call the liquid rock that flows out of a volcano during an eruption?

• Limestone

• Magma

• Lava