Benchmark Review

How does a delta form?

• a river slowing down
• it's just a river that empties into an ocean or lake
• the current of the river speeds up at the mouth causing sediment to wash away
• the current of the river slows down causing sediment to deposit

Tags

NGSS.MS-ESS2-2

How does a valley form?

• by a river flowing in between mountains
• it just appears
• by mountains separating
• by volcanoes erupting

The following are agents of erosion EXCEPT...

• wind
• water
• ice
• fire

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NGSS.MS-ESS2-2

An opening in the earth through which lava, rock, ashes, and gases are forced out is a...

• mountain
• volcano
• geyser
• bay

What type of land form will deposition create?

• mountains
• valleys and canyons
• sand dunes and deltas

What type of change occurred in this picture?

• weathering
• erosion
• deposition

What will this delta look like in 1 million years?

• it will be bigger
• they will be smaller

This rock arch is a result of

• deposition of minerals
• wind erosion
• water erosion
• ice wedging

Tags

NGSS.MS-ESS2-2

A manatee is a water-dwelling herbivore on the list of endangered species. If manatees were to become extinct, what would be the most likely result in areas where they had lived?

• Certain producer organisms would become more abundant in the area.
• Other manatees would move into the area and restore balance.
• Predators in the area would have more food to eat.
• The area would not be affected.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

Scientists are concerned about overfishing of shark populations. Sharks feed on rays and rays feed on scallops. Without sharks, rays consume all the scallop beds. This situation demonstrates that: 

• humans can improve an ecosystem by removing predators.
• humans can upset an ecosystem by removing species.
• reducing the shark population increases the quantity of scallops that can be taken.
• sharks are not important for the stability of the ecosystem.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4