8.11A Whitetip reef sharks spend most of the day lying on the ocean floor. While remaining still, these sharks pump water across their gills. The movement of water across their gills is necessary for —

• staying cool

• accessing food

• obtaining oxygen

• avoiding predators

8.8A Two stars are identified on the Hertzsprung-Russell diagram below. Based on this diagram, how do the characteristics of Star 1 and Star 2 compare?

• Star 1 is cooler and less bright than Star 2.

• Star 1 is hotter and brighter than Star 2.

• Star 1 is cooler and brighter than Star 2.

• Star 1 is hotter and less bright than Star 2.

8.9B The thick black lines on the map below show the locations of mid-ocean ridges. Which geologic feature is most likely to form at a mid-ocean ridge?

• Peninsula

• Volcano

• Delta

• Plateau

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

8.7A Earth would not have seasons if it —

• no longer tilted on its axis

• stopped rotating on its axis

• took an additional month to orbit the sun

• revolved around the sun in the opposite direction

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NGSS.MS-ESS1-1

6.12E The picture below shows brown bears by the side of a river. In this environment, the brown bears by the river are —

• biotic factors that catch biotic salmon in the river.

• abiotic factors that hunt along the biotic river.

• biotic factors that absorb the biotic sunlight.

• abiotic factors that breathe the abiotic air.

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NGSS.MS-LS2-1

8.11A After researching the diets of several birds inhabiting a nearby pond, a student goes on a field investigation to observe the feeding habits of the birds. the student records information from research and observations in the table. The student observes a great blue heron catching fish near the edge of the pond.

Based on the information the student collected, which bird will compete with the

great blue heron for the same hunting spots and similar prey?

• The mallard, because it hunts for fish while wading near the edge of the pond

• The pied-billed grebe, because it dives in open water to get crayfish on the

  bottom of the pond

• The great egret, because it hunts in water near the edge of the pond for fish and

  other prey

• None of these

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NGSS.MS-LS2-1

6.10DWhich is a possible result of plates moving along a transform boundary?

• Mountain belts

• Convection

• Sea-floor spreading

• Earthquakes

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NGSS.MS-ESS3-2

8.9B The model below shows two continental plates. The folded mountains in this model form at which type of plate boundary?

• Transform boundary

• Divergent boundary

• Subduction boundary

• Convergent boundary

Tags

NGSS.MS-ESS2-2

8.7A Which of these locations on Earth experiences the least change in the number of daylight hours throughout the year?

• Equator

• North Pole

• Tropic of Cancer

• Tropic of Capricorn

6.12A What is the minimum amount of material that must be present in a living organism?

• A single cell

• A single organelle

• Multiple nuclei

• Multiple tissues

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NGSS.MS-LS1-1