Earth History

Front

How do petrified fossils form?

Back

Minerals soak into and completely replace an organism's remains.

Front

The diagram below represents a stack of rock layers. These layers have not changed position since they formed. If the age of layer 4 is 400 million years and the age of layer 1 is 500 million years, then the age of Layer 2 is

Back

between 400 million and 500 million years.

Tags

NGSS.MS-ESS1-4

Front

What does an index fossil represent?

Back

a short interval of Earth's history.

Tags

NGSS.MS-ESS1-4

Front

Which statement about the movement of Earth's crust along a fault line is true? Options:

Only horizontal, side-to-side movement occurs along faults.

,

Only vertical, up-and-down movement occurs along faults.

,

Different types of movement occur along different types of faults.

,

Crustal movement does not occur along fault lines.

Back

Different types of movement occur along different types of faults.

Front

Which event occurred last to produce this rock column? Options: layer A was deposited, layer B was deposited, layer C was deposited, igneous intrusion D cross-cut layers, fault E offset existing layers.

Back

fault E offset existing layers

Front

List Earth's geologic eras from most ancient to most recent:

Cenozoic, Mesozoic, Paleozoic, Precambrian

,

Precambrian, Paleozoic, Mesozoic, Cenozoic

,

Precambrian, Mesozoic, Paleozoic, Cenozoic

,

Paleozoic, Precambrian, Mesozoic, Cenozoic

Back

Precambrian, Paleozoic, Mesozoic, Cenozoic

Tags

NGSS.MS-ESS1-4

Front

If scientists find an ice core from 30,000 years ago that contains chemicals radically different than the chemicals that are around today, they would likely conclude that...

Back

the atmosphere 30,000 years ago was different than our atmosphere today.

Tags

NGSS.MS-ESS3-5

Front

What can cause older layers of rock to be found above younger layers, contrary to the law of superposition?

Back

All of these: Rock layers can overturn as they are folded, during uplift rock layers can tilt enough to overturn, older rock layers can slide above younger rock layers along faults.

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS2-2

Front

When examining a rock sample, which of the following is the best method for determining its exact age?

• applying the law of superposition
• relative dating
• radiometric (radioactive) dating
• index fossil identification

Back

radiometric (radioactive) dating

Front

In states along the Gulf of Mexico, fossilized seashells from millions of years ago are often found on land many kilometers from the shore. These fossils are evidence that

Back

the Gulf shoreline was farther inland in the past.

Tags

NGSS.MS-ESS2-2

NGSS.MS-LS4-1