Identifying Different Types of Rocks

What simple tool can you use to start investigating the history of a rock?

• A telescope

• A magnifying glass

• A ruler

• A microscope

What are the three main types of rocks?

• Sedimentary, Metamorphic, Igneous

• Igneous, Volcanic, Metamorphic

• Metamorphic, Volcanic, Sedimentary

• Sedimentary, Volcanic, Igneous

Tags

NGSS.MS-ESS2-1

What is the key to distinguishing between the three main rock types?

• Smell

• Color

• Weight

• Texture

What are sedimentary rocks made up of?

• Compressed layers of soil

• Broken bits of minerals, other rocks, or fossils

• Molten magma

• Crystals of minerals

Tags

NGSS.MS-ESS2-1

How can you identify igneous rocks?

• By their layers of different colors

• By their randomly oriented crystals

• By their rounded grains

• By their fossil content

What characteristic is common in metamorphic rocks?

• Randomly oriented crystals

• Presence of fossils

• Crystals lined up in one direction

• Rounded grains

What can layers of different colors in a rock indicate?

• The rock is sedimentary

• The rock is igneous

• The rock is metamorphic

• The rock is volcanic

What does a reddish tint in a rock usually indicate?

• Presence of sulfur

• Presence of oil

• Presence of iron oxide

• Presence of copper

Which rock type is likely to be softer and less shiny?

• Volcanic

• Sedimentary

• Metamorphic

• Igneous

What sensory observation can help identify a rock's density?

• Taste

• Color

• Weight

• Smell