GS 5.1 Rocks and Dating Methods

The Law of Superposition helps scientists to determine what?

• The absolute age of rock layers
• The age of fossils
• The relative age of rock layers
• the super powers of rocks

How old do Paleontologists believe the Earth is?

• 2015 years old
• 3.6 billion years old
• 4.6 billion years old
• 4.6 million years old

According to the law of superposition, the oldest fossils are found 

• At the top of the rock layers
• Near the bottom of the rock layers
• In the middle of the rock layers
• Somewhat near the surface

_{What can scientists learn from the sequence of rock layers?}

• Geologic history of that area
• Future geological events
• the number of organisms that live in the area
• the impact that hikers have had on an area.

_{Which rock layer in the diagram seems to be the oldest?}

• F
• E
• B
• A

This rock was another type of rock that was heated and compressed over time. What type of rock is this?

• Sedimentary
• Igneous
• Metamorphic

This rock was formed by smaller pieces of rock that settled at the bottom of a lake millions of years ago. What type of rock is this?

• Sedimentary
• Igneous
• Metamorphic

This rock started as lava that cooled and then was heated and compressed over time. What type of rock is this?

• Sedimentar
• Igneous
• Metamorphic

This rock used to be the bottom of an ocean millions of years ago. What type of rock is this?

• Sedimentary
• Igneous
• Metamorphic

what is the rock cycle.

• molten rock that is stored underground.
• rock material that forms where rocks are broken down into smaller pieces.
• a process that changes one type of rock into another type of rock.