Mystery Science Birth of Rocks 2

Which of the following are types of volcanoes?

• cone-shaped

• ship-shaped

• dog's head

• shield-shaped.

Which type of lava is found in a cone-shaped volcano?

• green lava

• thin lava

• thick lava

• a type of lava that no one has ever seen

Which type of lava is found in a shield volcano?

• thick lava

• thin, runny lava

• green lava

• cold lava

Volcanoes with thick lava are more likely to explode because...

• air bubbles can't escape and the pressure builds until it blows up.

• earthquakes cause thick lava.

• air bubbles escape more easily and very little pressure builds up.

• they get much angrier than volcanoes with thin lava!

Volcanoes with thin lava are less likely to explode because...

• the air bubbles build up until their is extreme pressure which causes an explosion.

• they are smaller.

• air bubbles can escape the lava and there is no build-up of pressure.

• they are not in the Ring of Fire where most volcanoes are found.

Felsite is ...

• dark colored.

• light colored.

• reddish.

• harder than a diamond.

Felsite can be found in ...

• all volcanoes.

• shield-shaped volcanoes.

• only in the ocean,

• cone-shaped volcanoes.

Basalt is ... and can be found in ...

• dark-colored

  shield volcanoes.

• dark-colored

  cone volcanoes.

• light-colored

  shield volcanoes.

• light-colored

  cone volcanoes.