Oceans and Seas

Unstable, shallow water waves are called ______________.

• longshore currents

• tidal waves

• rip currents

• breakers

Tags

NGSS.MS-PS4-2

About what percentage of the earth's surface is covered by oceans?

• 71%

• 50%

• 35%

• 30%

The most abundant salt found in ocean water is __________.

• calcium sulfate

• magnesium bromide

• magnesium chloride

• sodium chloride

Seawater temperature near the ocean bottom __________.

• is much warmer near the Equator than near the North Pole

• varies widely all over the world

• varies little all over the world

• is about the same as it is near the surface

Tags

NGSS.MS-ESS2-6

What is the primary source of oxygen in the lighted zones near the surface of the ocean?

• Photosynthesis by marine plants

• Volcanic vents on the ocean floor

• Chemical reactions with seawater

• Atmospheric diffusion

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

How much mineral salt does 1000 g of seawater contain?

• 25 g

• 35 g

• 40 g

• 50 g

_________ is a broad field that includes specialties such as marine biology, marine engineering, marine chemistry, and more.

Tags

NGSS.MS-ESS2-4

NGSS.MS-LS2-3

Mean sea level is slowly rising in most locations around the world.

• True

• False

Tags

NGSS.MS-ESS2-6

The deepest measured depth of the ocean is about 11,000 m (36,000 ft).

• True

• False

Typical seawater contains about 35 grams of table salt (NaCl) per kilogram of seawater.

• True

• False