Types of Rocks and Minerals

How old are the rocks that make up our planet?

• A few years

• A thousand years

• Millions of years

• Billions of years

What are the tiny building blocks that make up all matter?

• Molecules

• Crystals

• Atoms

• Rocks

What are minerals made of?

• Water

• Billions of molecules

• Dust

• Gas

What kind of rock is formed when magma cools down and becomes solid?

• Sedimentary rock

• Metamorphic rock

• Igneous rock

• Sandstone

What are the three main types of rocks?

• Granite, Basalt, Slate

• Igneous, Sedimentary, Metamorphic

• Sandstone, Limestone, Marble

• Water, Wind, Heat

Why does granite have large crystals?

• It cools quickly

• It cools slowly

• It is found on the ocean floor

• It is made of small fragments

What kind of rock is formed when lava cools quickly from a volcano?

• Intrusive igneous rock

• Sedimentary rock

• Extrusive igneous rock

• Metamorphic rock

What are the small pieces that rocks break down into called?

• Crystals

• Magma

• Sediments

• Molecules

How are sedimentary rocks formed?

• From cooling magma

• From heat and pressure

• From layers of sediments pressing together

• From volcanic eruptions

What happens to rocks when they are heated and squeezed deep inside the Earth?

• They melt into magma

• They break into sediments

• They form igneous rocks

• They change into metamorphic rocks