Intro to Oceans

Which wave has more energy? Why?

• The blue wave has more energy because it has a greater height.

• The blue wave has more energy because it has a greater frequency.

• The red wave has more energy because it has a greater amplitude.

• The red wave has more energy because it has a greater wavelength.

A scientist recorded this data at an ocean beach. Which conclusion should the scientist make?

• Faster winds make lower waves.

• Faster winds make taller waves.

• Warmer air makes lower waves.

• Warmer air makes taller waves.

The table shows events that change the saltiness of ocean water. Which set shows all that would make ocean water less salty?

• 2, 3

• 1, 2, 4, 6

• 1, 4

• 2, 3, 5, 6

What do ocean currents carry that MOST affects climates?

• heat

• fish

• ships

• salt

Which movement of ocean water is caused by the Moon?

• waves

• tides

• shallow currents

• deep currents

Convection currents move sea life, nutrients, and water through the ocean. What will happen to the convection currents if heat energy is added to the ocean?

• Energy cannot create change, so currents will remain the same while ocean processes could slow down or speed up.

• Energy cannot cause motion, so the currents will remain the same while other ocean processes stop.

• The added energy would have no effect on the ocean and its processes.

• The added energy could cause a change in the convection currents.

What is the source for most of the water vapor that enters the atmosphere through evaporation?

• land

• plants

• oceans

• mountains

This table shows the heights of the high and low tides relative to the average water level. Which reading was most likely to have been recorded when the Moon was closest to Earth?

• 1

• 2

• 3

• 4

The diagram shows Earth and the Moon. The gray crescent shapes touching Earth represent Earth's water bulging outward as high tide occurs at two places. As Earth turns, the two high tides will...

• move toward each other until they form one large high tide

• remain on opposite sides of Earth, in line with the Moon.

• split in half, causing high tides to occur at four places on Earth.

• grow smaller until there are no more high tides occurring on Earth.

When high tides and low tides are at their most extreme, they are said to be...

• bottom tides

• spring tides

• neap tides

• trench tides