Three Types of Rocks

Which of the choices below is NOT one of the three types of rocks?

• Metamorphic
• Indigenous
• Sedimentary
• Igneous

What material is used to form igneous rocks?

• magma
• sand
• gravel
• fossils

What process is used to form sedimentary rocks?

• Lava cools and hardens to form a rock.
• Bits of sand and gravel form layers that turn into rock from pressure.
• Extreme heat and pressure from inside the Earth turn rocks into new rocks.
• Magma trapped under the Earth's surface cools and solidifies.

Which of the words below describe mud, sand, and tiny bits of rocks that cement together to form a type of rock?

• stalactites
• magmas
• metamorphs
• sediments

What process is used to form metamorphic rocks?

• Lava cools and hardens to form a rock.
• Bits of sand and gravel form layers that turn into rock from pressure.
• Extreme heat and pressure from inside the Earth turn rocks into new rocks.

What type of rock can turn into a metamorphic rock?

• Igneous only
• Sedimentary only
• Metamorphic only
• Any type of rock

Which type of rock would you expect to find by a volcano?

• Ingenious
• Igneous
• Indigenous 
• Indigo 

What type of scientist is most likely to study rocks?

• geologists
• biologists
• meteorologists 
• biochemicists