Oceans Test RETAKE

Which best explains how nutrients, salt, sediment and pollutants get into estuaries and oceans?

• from precipitation falling over the estuaries and oceans

• From organisms living and dying in estuaries and oceans

• From rivers and streams flowing into estuaries and oceans

• From asteroids and comets impacting Earth at estuaries and oceans

Tags

NGSS.MS-LS2-3

Which accurately describes the relationship between nutrients and lifeforms in an estuary?

• As nutrients increase, the number of life-forms increases.

• As nutrients decrease, the number of life-forms increases.

• As nutrients increase, the number of life-forms stays the same.

• As nutrients decrease, the number of life-forms stays the same.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Which is most likely to be the energy source for organisms living in hydrothermal vents?

• oxygen

• sunlight

• methane

• carbon dioxide

Light does not reach the bottom of the ocean, yet certain species live there. Which best explains how species on the bottom of the ocean get energy to live?

• Algae and bacteria produce energy through photosynthesis.

• Hydrothermal vents produce energy through chemical reactions.

• Dead plants and animals produce energy through decomposition.

Which best describes the most abundant form of ocean life?

• fish

• algae

• microbes

What would most likely happen to the entire ocean food web if plankton were not available?

• All organisms that live in the ocean would not survive.

• The organisms would adapt and find another source of food.

• Only whales and other large ocean mammals would be affected.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Tags

NGSS.HS-ESS2-6

How does overharvesting of oysters impact the water quality of an estuary?

• increase in pollution usually consumed by oysters

• increase in organic matter usually filtered by oysters

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

What is the best comparison of density currents and upwelling in the ocean?

• Density currents are caused by the pushing of water; upwelling is caused by El Niño.

• Density currents are caused by El Niño; upwelling is caused by the pushing of water.

• Density currents are caused by differences in salinity and temperature; upwelling is caused when wind causes surface water to move away from shore.

Tags

NGSS.MS-ESS2-6

Why is productivity greatest near the ocean’s surface?

• More predators live in the top layers of the ocean.

• Salinity at all layers of the open ocean is fairly consistent.

• Sunlight penetrates the top layers of the ocean, so photosynthesis occurs there.

• Nutrients, minerals, and gases are more available to marine life in the bottom layers of the ocean.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3