The Movement of Ocean Water

Currents that move from the equator to the poles, will________

• decrease in temperature and density

• decrease in temperature, but increase in density

• increase in temperature and density

• increase in temperature, but decrease in density

What are common characteristics of surface currents?

• Warm, low density, and low salinity

• Cold, high density, and high salinity

• Warm, high density, and low salinity

• Cold, low density, and high salinity

How does the Earth rotation impact ocean currents?

• Currents in the northern hemisphere and southern hemisphere move clockwise (right/east)

• Currents in the northern hemisphere and southern hemisphere move counter-clockwise (left/west)

• Currents in the northern hemisphere move clockwise (right/east) and southern hemisphere move counter-clockwise (left/west)

• Currents in the northern hemisphere counter-clockwise (left/west) and southern hemisphere move clockwise (right/east)

Contrast between surface currents and deep currents.

• Surface currents are caused by global winds, whereas deep currents are caused by the Coriolis Effect

• Both surface currents and deep currents are caused global winds

• Both surface currents and deep currents are caused by the Coriolis Effect

• Surface currents are caused by global winds, whereas deep currents are caused by changes in density.

Contrast the characteristics of surface currents and deep currents.

• Surface currents are warmer and more dense, whereas deep currents are colder and less dense.

• Surface currents are colder and less dense, whereas deep currents are warmer and less dense.

• Surface currents are warmer and less dense, whereas deep currents are colder and more dense.

• There are no differences in temperature and density between the two current types.

What has the greatest impact on ocean waves?

• Wind

• Movement of sea animals

• Moon's gravitational pull on Earth

• Coriolis Effect

What happens to the speed and height of a wave as it approaches the shore?

• It slows down due to the friction of the ocean floor and increase in height.

• It speeds up due to the friction of the ocean floor and increase in height.

• It slows down due to the friction of the ocean floor and remains the same height.

• It slows down due to the friction of the ocean floor and decrease in height.

A force that pulls an object towards the ocean and away from the shore is called an__________.

• Upwelling

• Undertow

• Tide

• Storm surge

What is the cause of Earth's tides?

• The gravitational pull on the Earth from the sun and moon. However, the greatest impact comes from the moon because it is closer to Earth.

• The gravitational pull on the Earth from the sun and moon. However, the greatest impact comes from the sun because it is closer to Earth.

• The gravitational pull on the Earth from the sun and moon. However, the greatest impact comes from the sun because it is larger than the moon.

• The gravitational pull on the Earth from the sun and moon, with both having the same amount of impact.

What factors influence the size of a wave?

• Wind's speed, distance, and temperature

• Wind's speed, density, and temperature

• Wind's speed, distance, and length of time

• Wind's density, distance, and temperature