Chapter 12 Earth's Atmosphere Part 1 (Lessons 1&2)

Multiple Choice

Which of the following is a function of Earth's atmosphere as described in the lesson?

• It increases the temperature of Earth's surface.

• It helps protect living organisms from some of the sun's harmful rays.

• It makes Earth’s surface harder.

• It causes meteors to speed up before striking Earth.

Multiple Choice

Which gases were present in Earth's ancient atmosphere according to the lesson?

• Oxygen, Nitrogen, Methane

• Water vapor, Carbon dioxide, Ammonia

• Hydrogen, Helium, Neon

• Argon, Krypton, Xenon

Open Ended

Explain the role of photosynthetic organisms in the development of Earth's atmosphere.

Multiple Choice

What percentage of Earth's atmosphere is made up of nitrogen?

• 21%

• 50%

• 78%

• 1%

Multiple Choice

Which atmospheric layer is closest to Earth's surface?

• Troposphere

• Stratosphere

• Mesosphere

• Exosphere

Multiple Choice

What happens to ultraviolet rays when they reach the ozone layer?

• They are absorbed by ozone.

• They pass through unaffected.

• They are reflected back to space.

• They are absorbed by nitrogen.

Open Ended

Explain the importance of the ozone layer in protecting life on Earth.

Multiple Select

Which of the following statements are true about the Mesosphere and Thermosphere?

• They have a low density of gases.

• They are broader than the Troposphere and Stratosphere.

• They are the warmest layers of the atmosphere.

• They are closest to Earth's surface.

Multiple Choice

Which layer of Earth's atmosphere contains ions and is known for displays of colored lights called auroras?

• Troposphere

• Stratosphere

• Ionosphere

• Exosphere

Open Ended

What is an aurora?

Multiple Choice

Which of the following statements about the Exosphere is correct?

• Gas molecules are tightly packed together.

• Gas molecules are so spread out that they rarely strike one another.

• It is the lowest layer of the atmosphere.

• It contains the ozone layer.

Multiple Select

Select all the layers of Earth's atmosphere where temperature decreases as altitude increases.

• Troposphere

• Stratosphere

• Mesosphere

• Thermosphere

Multiple Choice

Which process is responsible for the transfer of energy from the sun to the ground in the atmosphere?

• Conduction

• Convection

• Radiation

• Evaporation

Multiple Choice

What percentage of the Sun's radiation is visible light?

• 6.6%

• 38.9%

• 54.3%

• 29.4%

Multiple Choice

Which of the following gases absorb ultraviolet light in the Earth's atmosphere?

• Ozone

• Nitrogen

• Carbon Dioxide

• Methane

Open Ended

What questions do you still have about Earth's atmosphere or its importance to life on Earth?

Multiple Choice

Why is Earth's atmosphere important for life on our planet?

• It provides insulation to keep temperatures suitable for life

• It is a solid layer protecting Earth from meteors

• It is made entirely of oxygen

• It is only a few meters thick