FINAL EXAM REVIEW 8TH GRADE!

The Geologic Time Scale has been subdivided into time units called periods based on:

• the types of fossils found

• the number of fossils found

• the shape of fossils found

• the color of fossils found

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NGSS.MS-ESS1-4

The complete disappearance of a species is known as:

• isolation

• speciation

• extinction

• classification

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NGSS.MS-LS4-1

The Sun appears to move across the sky during the day. The best explanation for this apparent motion is that Earth is:

• rotating on its axis

• revolving around the Sun

• much smaller than the Sun

• tilted on its axis

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NGSS.MS-ESS1-1

The numbered lines on the weather map connect locations with the same

• wind direction

• wind speed

• air temperature

• air pressure

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NGSS.MS-ESS2-6

In addition to oxygen, which gases make up the largest percentage of Earth's atmosphere?

• hydrogen, helium, and water vapor

• hydrogen, methane, and ozone

• carbon dioxide, water vapor, and nitrogen

• carbon dioxide, methane, and helium

A sudden change in the weather at a certain location is most likely caused by

• the arrival of an air mass

• a severe earthquake

• a high ocean tide

• an eclipse of the moon

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NGSS.MS-ESS2-5

The length of a year is equivalent to the time it takes for one

• rotation of Earth

• rotation of the Sun

• revolution of Earth around the Sun

• revolution of the Sun around the Earth

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NGSS.MS-ESS1-1

Which characteristic is common amongst all sedimentary, metamorphic, and igneous rocks?

• Rocks form from heat and pressure.

• Rocks contain fossils.

• Rocks are composed of minerals.

• Rocks are formed in layers.

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NGSS.MS-ESS2-1

Which statement best explains why this process results in weathering?

• Frozen water acts as a solute.

• Water expands when it freezes.

• The mass of water increases when it freezes.

• Frozen water dissolves most types of rocks.

Limestone is a sedimentary rock and marble is a metamorphic rock. Even though limestone and marble have the same chemical makeup, they are classified as different rocks because they

• were formed from different fossils

• took different amounts of time to form

• formed at different times

• formed by different methods

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NGSS.MS-ESS2-1