Earth Science Quiz

What is Earth's crust made almost entirely of?

• Water

• Rocks

• Sand

• Metal

What are pebbles in a streambed?

• Metal objects

• Smooth, rounded rocks

• Fossils

• Clay

What are mountains, hills, and cliffs made of?

• Water

• Sand

• Rocks

• Metal

Where can you find rocks that artists have carved into sculptures?

• Parks

• Beaches

• Museums

• Streets

What are minerals considered in relation to rocks?

How are igneous rocks formed?

• By compacting sediments

• By exposure to extreme heat and pressure

• By cooling and solidifying magma

• By weathering sedimentary rocks

What is obsidian often called?

• Volcanic glass

• Granite

• Marble

• Basalt

How do ancient tool makers shape obsidian into sharp cutting tools?

• By melting it

• By compacting it

What is another major class of rocks?

• Porous magma

• Sedimentary rock

• Metallic rock

• Volcanic rock

What are sedimentary rocks made of?

• Minerals

• Sediments

• Magma

• Metal