Earth's Spheres

Which of the following statements about air pressure is true?

• Air pressure increases as altitude increases.
• Air pressure decreases as altitude increases.
• The atmosphere's air pressure does not vary
• Warm air tends to have higher air pressure than cold air

Which accurately describes the atmosphere?

• Composed of masses of air particles that are constantly circulating.
• Composed entirely of nitrogen and oxygen which react to form ozone.
• Comoposed of masses of air particles that move very little, if at all.
• Composed of several layers that increase in density as altitude increases.

Which correctly shows the 4 most abundant gasses in order from most abundant to least abundant?

• Nitrogen, Oxygen Argon, Carbon Dioxide, Ozone

• Oxygen, Nitrogen, Ozone, Carbon Dioxide, Argon

• Ozone, Nitrogen, Oxygen, Carbon Dioxide, Argon

• Oxygen, Ozone, Nitrogen, Argon, Carbon Dioxide

The graph shows how temperature changes with altitude in the Earth's atmosphere. In the troposphere...

• Temperature decreases as altitude increases
• Temperature increases as altitude increases
• Temperature alternately increases and decreases as altitude increases
• Temperature stays the same as altitude increases

Most of the mass in Earth's atmosphere is found:

• In the exosphere.

• In the stratosphere.

• In the thermosphere.

• In the troposphere.

Which of the choices below is one of the primary gases found in the atmosphere?

• Oxygen
• Argon
• Carbon Dioxide
• Helium

The hydrosphere is predominately made of

• liquid water
• frozen water
• solid rock
• gaseous air

Earth's atmosphere is made up of four different layers. In which of the following layer does virtually all of Earth's weather take place?

• Stratosphere
• Mesosphere
• Thermosphere
• Troposphere

What would happen to temperatures on Earth if the atmosphere did not exist?

• Nothing would happen to change the temperatures.

• All temperatures would decrease.

• All temperatures would increase.

• Temperatures would become more extreme.

Which of the following describes all of the types of water found in the hydrosphere?

• all frozen water on the Earth
• all of the water on the Earth
• all of the fresh water on the Earth
• all of the water found on the surface of the continents