Currents and Waves

Currents and Waves

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Multiple Choice

Deep ocean currents are driven by ______________.

• differences in density

• surface currents

• wind

• climate change

Multiple Choice

The Coriolis Effect is caused by what?

• The wind blowing

• Earth's gravity pulling things down

• The rotation of the Earth

• The pull of the Moon

Multiple Choice

What causes surface currents north and south of the equator to move in different directions?

• Gases in the ocean

• The rotation of the Earth

• Temperature differences

• Continental deflection

Multiple Choice

Ocean currents bring warm water from the equator towards Earth's

• Southern Hemisphere
• Equator
• Poles

Multiple Choice

Regular movements of water far below the oceans surface are called

• Warm Currents
• Deep Currents
• Shallow Currents
• Surface Currents

Multiple Choice

Two types of ocean currents are

• local and global
• sea and land
• surface and deep
• warm and cold

Multiple Choice

Which statement BEST describes why warm ocean currents are usually surface currents?

• Warm water is less dense than cold water.

• Ocean tides bring warm water to the surface.

• Warm water contains more salt than cold water.

• Ocean water loses heat to the air at the surface.

Multiple Choice

___________ is the cause of most ocean surface currents.

• Gravity

• The moon

• The wind

• Earth's orbit

Multiple Choice

Some ocean currents are caused by differences in the density of water from place to place around the globe. What two factors cause differences in ocean water density?

• differences in water temperature and wind

• differences in water temperature and phases of the moon

• differences in water temperature and amount of dissolved salts

Multiple Choice

The Gulf Stream current makes the waters of North Atlantic

• cooler
• warmer

Multiple Choice

Surface ocean currents are generated mostly by

• water density
• tides
• wind

Multiple Choice

A strong wind from the north blows in a straight south direction. However, to an observer, the wind appears to be moving to the southwest. What accounts for this shift in wind direction?

• the rotation of Earth beneath the layer of air
• the ozone layer focusing solar energy, causing the wind to shift
• the local mountains pushing the wind to the side as it moves through the state

Multiple Choice

When air is heated, it will MOST likely

• expand and fall
• expand and rise

Multiple Choice

As ocean depth increases, density

• increases

• decreases

• stays the same

• moves the same way

Multiple Choice

As temperature increases, salinity

• increases

• decreases

• stays the same

• moves the same way

Multiple Choice

As temperature increases, density

• increases

• decreases

• stays the same

• moves the same way

Multiple Choice

What causes surface waves?

• underwater volcanoes
• earthquakes
• wind
• landslides

Multiple Choice

A horizontal movement of ocean water that is caused by wind and that occurs at or near the ocean's surface.

• Gulf Stream
• Surface Current
• Gyre

Multiple Choice

Constantly moving system of deep-ocean circulation driven by temperature and salinity. It moves water around the globe.

• Global Conveyor Belt
• Surface Currents

Multiple Choice

A strong surface current that runs along the east coast of the United States and carries warm water to Europe.

• Global Conveyor Belt
• Gulf Stream

Multiple Choice

Warm ocean currents generally come from

• The North Pole
• The South Pole
• The Equator

Multiple Choice

As you go deeper in the ocean, the water is colder and less salty.

• True
• False

Multiple Choice

The Gulf stream carries _____________ water from the east coast of The United States to the West coast of Europe.

• Cold
• Warm 
• Freezing
• Fresh