Which of the following would provide the best model for a sedimentary rock?

• an ice cream cone
• a brownie
• a cake with many layers
• a slice of bread

If rock layers form at the ocean bottom, what kind of rock is being formed? 

• Extrusive
• Sedimentary
• Igneous
• Metamorphic

What can scientists conclude about fossils found in the same rock layer?

• They are from the same species.
• They died around the same time.
• They died in the same way.
• They had the same lifespan.

Which statement is probably true about a rock that is many different colors?

• It cannot be magnetic.
• It is made of more than one mineral.
• It is not as hard as other rocks with only one color.
• It must be heavier than other rocks.

Which of the following statements is true?

• Minerals are composed of rocks.
• Minerals are the same as rocks.
• Rocks are composed of minerals.
• Rocks are not composed of minerals. 

Limestone that was buried deep underground changed over time due to heat and pressure. Which type of rock did the limestone become?

• Basalt
• Igneous
• Metamorphic
• Sedimentary

What must happen to a metamorphic rock in order for it to become an igneous rock?

• It must be compacted and then crystallized.
• It must be subjected to long periods of heat and pressure.
• It must go through weathering and then compaction.
• It must fully melt and then cool.

Which layer of the Earth is made up of tectonic plates? 

• Crust
• Mantle
• Outer Core
• Inner Core

Which layer has the highest temperature, pressure, and density?

• Crust
• Mantle
• Core
• Mesosphere

The layer that makes up most of the Earth's mass and volume is the _________.

• Mantle
• Magma
• Crust
• Core