Igneous, Sedementary, & Metamorphic Rocks Quiz

What are igneous rocks formed from?

• Sand and water

• Melted rock (lava or magma)

• Soil and clay

• Ice and snow

How do igneous rocks look different?

• Based on their color

• Based on their size

• Based on how fast they cool and what minerals they contain

• Based on their shape

What causes some igneous rocks to look sparkly?

• Rapid cooling

• Presence of air bubbles

• Slow cooling deep inside the earth

• Exposure to sunlight

Why do some igneous rocks have large crystals?

• Because they cool quickly

• Because they cool slowly

• Because they are exposed to water

• Because they are formed from sand

What type of igneous rocks are formed from rapid cooling?

• Rocks with large crystals

• Rocks with tiny crystals or natural glass

• Rocks with air holes

• Rocks with layers

What is the main characteristic of igneous rocks with air holes?

• They are very heavy

• They are lightweight

• They are very dark

• They are very smooth

What are sedimentary rocks formed from?

• Fragments of rocks, shells, sand, and clay

• Molten lava

• Crystals and minerals

• Magma

Tags

NGSS.MS-ESS2-3

What happens to the fragments to form sedimentary rocks?

• They melt and cool

• They are pressed and cemented together

• They evaporate

• They explode

How can you identify most sedimentary rocks?

• They are very hard

• They are soft and can be crumbled, split, or broken with your hands

• They are shiny and smooth

• They are magnetic

What causes metamorphic rocks to form?

• Heat and pressure

• Water and wind

• Sunlight and rain

• Ice and snow