Unit Test: Physical Oceanography

What does salinity measure?

• the amount of dissolved salts in water

• the amount of dissolved oxygen in water

• the amount of water in the sample

• The density of the amount of water

As salinity increases, is there a change in density?

• Yes, the density also increases

• Yes, the density decreases

• No, the two are not related.

• No, only temperature changes.

What is the average salinity of the ocean?

• 45 ppt

• 25 ppt

• 15 ppt

• 35 ppt

Gyres tend to flow

• Counterclockwise in both the Northern and Southern Hemisphere

• clockwise in both the Northern and Southern Hemisphere

• clockwise in the Northern Hemisphere and counterclockwise in the Southern Hemisphere

• counterclockwise in the Northern Hemisphere clockwise the Southern Hemisphere

Tags

NGSS.MS-ESS2-6

The ocean conveyor belt is important because...

• It is the primary method fishermen have to process what they catch.

• it redistributes heat and moderates the Earth’s climate.

• it creates energy for the Earth

• it makes fish migrate

Tags

NGSS.MS-ESS2-6

Without currents, the world’s climates would be

• more extreme.

• more moderate.

• no different.

• changing daily.

Tags

NGSS.MS-ESS2-6

During El Niño, warm water pushes toward the eastern Pacific. This event causes ____.

• flooding in the northern U.S.

• drought in the southern U.S.

• no change to weather

• flooding in the southern U.S.

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

La Niña weather patterns generally cause which of the following:

• No upwelling in the eastern Pacific, and drought in California.

• Upwelling in the eastern Pacific, and drought in California.

• No upwelling in the eastern Pacific, and drought in California.

• Upwelling in the Eastern Pacific, drought in the Southern U.S.

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

The main disturbing force that causes waves is

• Wind

• Gravity

• Coriolis effect

• Temperature

____ is the distance between the identical spots on two waves (crest to crest or trough to trough).

• Period

• Fetch

• wave length

• wave height

Tags

NGSS.MS-PS4-1