Geo Time Modified

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 squirrels

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NGSS.MS-ESS1-4

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

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NGSS.MS-ESS1-4

NGSS.MS-LS4-1

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

• F
• E
• B
• A

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NGSS.MS-ESS1-4

The geologic time scale is a record of _________

• the thickness of sedimentary rock layers

• The rate of fossil formation

• The life forms and geological events of Earth's history

• The time since the evolution of dinosaurs

What does absolute age tell us about fossils and rock strata?

• the actual age in numbers

• a comparison age (1 thing is older than another thing)

• what should be used as an "index fossil"

• how the rock strata was formed

Preserved remains of plants and animals from the distant past are called what?

• rock strata

• rock layers

• ammorites

• fossils

How old do scientists think the Earth is?

• 6.4 billion years old

• 6.4 million years old

• 4.6 billion years old

• 4.6 million years old

The earliest life forms were ...

• dinosaurs

• single-celled organisms

• fossils

• vetebrates

The law of superposition states that, in horizontal layers of sedimentary rock, each layer is _____.

• younger than the layer above it and older than the layer below it

• neither older nor younger than the other layers

• older than the layer above it and younger than the layer below it

• always older than any vertical layers

What is NOT a reason why scientists know so little about Earth's history for the first 4 billion years?

• Organisms from this time did not have hard body parts that could preserve into fossils

• Organisms from this time would have been buried too deeply to be found now

• Organisms from this time did not exist

• Organisms from this time would have been heated and pressurized into metamorphic rock