Air and Water Currents

Water moves the slowest in which type of water body?

• river
• cloud
• ocean
• groundwater

Which process causes wind?

• ocean currents
• differences in elevation
• condensation in the atmosphere
• the uneven heating of Earth by the sun

The diagram shows how warm water and cold water move in the ocean.
Which process does the diagram show?

• radiation
• convection
• absorption
• conduction

Which feature is most similar to runoff?

• a puff of steam
• a flowing stream
• a cloud in the sky
• an invisible form of water

Which type of current occurs when surface water on the ocean becomes denser than the water below it and sinks?

• upwelling
• deep current
• surface current
• Coriolis current

At different places on Earth, depending on elevation, air pressure varies. What causes air pressure?

• the weight of air
• the sun's energy
• Earth's magnetic field
• the density of nitrogen

Some characteristic types of wind result where global pressure belts meet. Which is the name of a zone of weak, variable winds located at
30 °N and 30 °S latitude?

• jet streams
• local winds
• the doldrums
• the horse latitudes

What causes air pressure at any point on Earth?

• carbon dioxide leveles
• water vapor in the air
• the weight of the atmosphere
• the strength of Earth's magnetic  field

During the day, water from the ocean is transferred to the atmosphere. Which statement describes the energy change that takes place during the transfer?

• The ocean is cooled when energy is transferred from the atmosphere to the ocean.
• Ocean waves speed up when energy is transported from the ocean to the atmosphere.
• Ocean waves slow down when energy is transported from the atmosphere to the ocean.
• The atmosphere is warmed when energy is transferred from the ocean to the atmosphere.

Which statement best describes the movement of heat energy in the global ocean?

• Heat energy is transported to the equator from the continents.
• Heat energy in deep currents is transported to the ocean’s surface.
•                Heat energy in warm surface currents is transported to areas near Earth’s poles.
• Heat energy is transported from areas of lower temperature to areas of higher temperature.