8th Grade Science Midterm

What type of rock do layers of earth and remains of living things turn into over time?

• Igneous rock

• Metamorphic rock

• Sedimentary rock

• Volcanic rock

Tags

NGSS.MS-ESS2-3

What does the fossil record show us about how the complexity of organisms changes over time?

• It Decreased

• No change

• It Increased

Tags

NGSS.MS-LS4-1

What is a mass extinction?

• When a single species dies out

• When many species die off around the same time

• When new species evolve

• When species migrate.

Tags

NGSS.MS-LS4-1

Which fossil is in the oldest rock layer according to the diagram?

• Fossil A

• Fossil B

• Fossil E

• Fossil F

Tags

NGSS.MS-ESS1-4

What was the supercontinent called where all continents were merged together?

• Pangaea

• Gondwana

• Laurasia

• Atlantis

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

NGSS.MS-LS4-1

What does gravity depend on?

• Mass and distance

• Color and shape

• Temperature and pressure

• Speed and direction

Tags

NGSS.MS-PS2-4

What is the primary relationship between speed and kinetic energy?

• As speed increases, kinetic energy decreases

• As speed increases, kinetic energy increases

• As speed decreases, kinetic energy increases

• Speed and kinetic energy are unrelated.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Name one way to increase friction.

• Make the surfaces smoother

• Add lubrication

• Increase the roughness of the surfaces

• Reduce the contact area

According to Newton's first law, what will happen to an object in motion if no outside force acts on it?

• An object in motion will remain in motion at a constant velocity unless acted upon by an outside force.

• An object in motion will eventually come to a stop on its own.

• An object in motion will change direction randomly.

• An object in motion will accelerate indefinitely.

Force is measured in what unit?

• Newton

• Joule

• Watt

• Pascal