Rock Strata Geological Time

The fossils of clams, which live at the seashore, were found in a rock layer directly below a rock layer that contained tree fossils. This evidence can be used to support the idea that -

• fossils form more quickly at the seashore than other places.

• clams and trees are always found in the same area.

• the area where the fossils were found changed over time.

• the layer containing the trees is older than the clam layer.

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NGSS.MS-ESS1-4

NGSS.MS-ESS2-2

Rock layers are called __________.

• data

• cake

• strata

• fossils

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NGSS.MS-ESS1-4

True or False: Stratigraphy is the study of rock layers.

• True

• False

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NGSS.MS-ESS1-4

Which layer is the youngest?

• Layer A

• Layer B

• LAyer C

• Layer D

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NGSS.MS-ESS1-4

Which of these rock layers is relatively the newest?

• Kaibab formation

• Zoraster Granite

• Redwall limestone

• Unkar group

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NGSS.MS-ESS1-4

Rock made from sediment compacted by the weight of sediment layers above are called __________ rock.

• intrusion

• metamorphic

• sedimentary

• volcanoes

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NGSS.MS-ESS1-4

Drag and drop the labels for the rock strata

a

d

b

c

3rd oldest

oldest

2nd oldest

youngest

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NGSS.MS-ESS1-4

Which layer is the oldest?

• Layer A

• Layer B

• Layer C

• Layer D

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NGSS.MS-ESS1-4

The ______________________ states that as layers accumulate over time, the rock at the bottom is older than the rock toward the top.

• law of inertia

• law of gravity

• law of superposition

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NGSS.MS-ESS1-4

What is rock strata?

• stacked up layers of sedimentary rock

• stacked up layers of metamorphic rock

• stacked up layers of igneous rock

• stacked up layers of meteorites

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NGSS.MS-ESS1-4