What is hot air rising and cold air sinking?

• Convection

• Conduction

• Radiation

• Evaporation

The energy from the Sun travels to the Earth through which process?

• Conduction

• Convection

• Radiation

• Reflection

What decreases as altitude increases?

• Temperature

• Air Pressure

• Altitude

• All of the above

The prefix that means heat is:

• thermo-

• hydro-

• photo-

• geo-

The layer that protects Earth from harmful UV Radiation is called the _______.

• Troposphere

• Stratosphere

• Ozone Layer

• Mesosphere

The atmosphere is:

• a layer of gases surrounding a planet

• a type of weather phenomenon

• a solid layer of the Earth

• a type of ecosystem

Which gas makes up most of the atmosphere?

• Oxygen

• Nitrogen

• Carbon Dioxide

• Argon

Name a trace gas found in Earth's atmosphere.

• Nitrogen

• Oxygen

• Helium

• Argon

• Neon

What objects might be found in the Mesosphere?

• Meteors

• Birds

• Satellites

• Clouds

What are three reasons the atmosphere is important?

• It protects the Earth from meteors, protects from harmful solar radiation, and regulates temperature.

• It provides food, water, and shelter.

• It creates gravity, produces sunlight, and generates wind.

• It causes earthquakes, volcanic eruptions, and tsunamis.