Chapter 16 Quiz

An increase in seawater density can be cause in a decrease in _________ or an increase in _________

An increase in salt-water density can be caused by a decrease in temperature or an increase in salinity.

What can we see on the shore that shows us the circular motion of water in a wave?

Breakers

What are some ways to protect our shoreline?

Groins, breakwaters, and seawalls

what are gyres?

Gyres are large whirls of water within an ocean basin.

Are all high and low tides patterns the same worldwide?

High and low tide patterns are not the same worldwide because the side of the Earth closest to the moon is being pulled toward it. The side of the earth farthest from the moon, water is being pulled away from the direction of the moon. and and gravel particles along the bottom.

What determines whether a current is considered warm or cold?

It depends on the direction. If they're going into cold water or not.

What is a longshore current and what effect does it have on sand?

Longshore current is a near-shore current that flows parallel to the shore. Turbulence allows longshore currents to easily move the fine suspended sand and to roll larger and and gravel particles along the bottom.

What are most ocean waves caused by?

Most ocean waves are caused by energy from a storm far out at sea

What effect do ocean currents have on the global temperature

Ocean currents affect the normal temperature because when currents from low-latitude regions move into higher latitudes, they transfer heat from warmer areas to cooler areas on Earth.

What causes ocean surface current?

Surface currents develop from friction between the ocean and the wind that blows across its surface

What is and what causes the Carioles effect?

The Coriolis effect is the deflection of currents away from their original course as a result of Earth's rotation.

What causes tides?

Tides are caused by the gravitational attraction exerted upon Earth by the moon and, to a lesser extent, by the sun.

what does upwelling provide for ocean life and man's fishing industry?

Upwelling brings greater concentrates of dissolved nutrients, such as nitrates and phosphates, to the ocean surface. This attracts fish to the surface, so this helps fishermen.

What is upwelling?

Upwelling is the rising of cold water from deeper layers to replace warmer surface water.

What is a wave refraction and what does it do?

Wave refraction is the process by which the portion of a wave in shallow water slows, causing the wave to bend and tend to align itself with the underwater contours