The Sun's Energy

How much radiation is absorbed by the Earth's atmosphere and surface?

• 20%

• 30%

• 50%

• 70%

What is a type of energy that spreads out as it travels?

• Radiation

• Conduction

• Convection

• Electrical

What is the process by which heat is transferred through direct contact?

• Radiation

• Conduction

• Convection

• Boiling

What is the process by which hot material rises and cooler material sinks?

• Radiation

• Conduction

• Convection

• Burning

How does the density of warm air compare to the density of cold air?

• Warm air is more dense than cold air and rises

• Warm air is less dense than cold air and rises

• Warm air is more dense than cold air and sinks

• Warm air is less dense than cold air and sink

Differences in density create differences in air

• temperature

• pressure

• luminosity

• quality

Air pressure at the Earth's surface is _______ than higher up in the atmosphere

• higher

• lower

The higher you rise into the atmosphere, the _________ the air pressure becomes.

• higher

• lower

How does the tilted Earth affect the distribution of the Sun's energy?

• sunlight strikes the poles more directly than the equator

• sunlight strikes the equator more directly than the poles

• all areas on the Earth receive the same amount of sunlight

• sunlight strikes the North Pole directly year-round

How does salinity (saltiness) affect density?

• Higher salinity, higher density

• Higher salinity, lower density

• Salinity has no effect on density