Which type of rock results from volcanic activity?

What volcano do scientists think will never erupt again?

Which sphere includes gases that surround the Earth?

What forms due to the movement of tectonic plates?

What are the three main types of rock?

Is the outer core liquid or solid?

Complete the sentence. When there's an opening in the Earth's crust, magma can rise up from the mantle. If the magma reaches the Earth's surface, a _________ forms.

What is semi-liquid rock called?

The temperature of the Earth's layers increases or decreases as we move towards the centre?

Which sphere includes animals, plants and microorganisms.

Which tectonic plate do you live on?

Is the inner core liquid or solid?

How many layers has the earth got? What are they?