Energy in the Atmosphere and Oceans

What is the transfer of heat by direct contact?

• Conduction

• Convection

• Radiation

• Insulation

What is the effect of temperature on the density of air?

• Hot air is more dense and sinks; cold air is less dense and rises.

• Hot air is less dense and rises; cold air is more dense and sinks.

• Temperature has no effect on the density of air.

• Hot air and cold air have the same density.

What do ocean currents bring from the equator towards Earth's poles?

• Cold water

• Warm water

• Nutrients

• Pollutants

What happens to hot air and cold air in terms of density?

• Hot air is more dense so it rises, and cold air is less dense so it sinks.

• Hot air is less dense so it rises, and cold air is more dense so it sinks.

• Hot air and cold air have the same density and neither rises nor sinks.

• Hot air sinks while cold air rises due to their densities.

What is the primary source of energy for Earth's atmosphere and oceans?

• The Moon

• Volcanic Activity

• The Sun

• Geothermal Energy

What happens to ocean water as salt water forms into ice?

• The ocean water becomes more salty.

• The ocean water becomes less salty.

• The ocean water freezes completely without salt.

• The ocean water evaporates completely.

What is the term for the movement of water in the ocean caused by wind and differences in temperature and salinity?

• Ocean currents

• Tidal waves

• Water cycles

• Surface tension

What is the term for the circular movement of air in the atmosphere caused by temperature differences?

• Convection currents

• Radiation waves

• Conduction cycles

• Thermal spirals

Where does convection occur on Earth?

• In oceans, mantle (magma), and atmosphere.

• In rivers and lakes only.

• Only in the atmosphere.

• In solid rocks beneath the surface.

What is the process called when heat is transferred through fluids (liquids and gases)?

• Conduction

• Convection

• Radiation

• Insulation