What is the composition of Earth's atmosphere in terms of major gases?

• 78% nitrogen, 21% oxygen, 1% other gases

• 50% nitrogen, 30% oxygen, 20% other gases

• 70% nitrogen, 25% oxygen, 5% other gases

• 60% nitrogen, 35% oxygen, 5% other gases

• 80% nitrogen, 15% oxygen, 5% other gases

Which layer of the atmosphere is closest to Earth and contains the most air particles?

• Stratosphere

• Mesosphere

• Thermosphere

• Exosphere

• Troposphere

In which layer of the atmosphere is the ozone layer located?

• Stratosphere

• Troposphere

• Mesosphere

• Thermosphere

• Exosphere

What is the temperature gradient in the troposphere?

• Temperature decreases with altitude

• Temperature increases with altitude

• Temperature remains constant

• Temperature fluctuates randomly

• Temperature is highest at the top

What is the temperature gradient in the stratosphere?

• Temperature decreases with altitude

• Temperature remains constant

• Temperature increases with altitude

Which layer of the atmosphere is known for being one of the coldest places on Earth?

• Troposphere

• Stratosphere

• Thermosphere

• Mesosphere

• Exosphere

In which layer of the atmosphere do gas molecules absorb highly energetic radiation from the sun?

• Troposphere

• Thermosphere

• Stratosphere

• Mesosphere

• Exosphere

Which is the highest layer of Earth's atmosphere where gas molecules often escape into space?

• Troposphere

• Stratosphere

• Mesosphere

• Exosphere

• Thermosphere

How does the ozone layer protect Earth from harmful UV radiation?

• Ozone molecules absorb UV radiation and release heat

• Ozone molecules reflect UV radiation

• Ozone molecules convert UV radiation into oxygen

• Ozone molecules trap UV radiation

• Ozone molecules emit UV radiation

In which layer of the atmosphere does most of Earth's weather and cloud formation occur?

• Stratosphere

• Mesosphere

• Troposphere

• Thermosphere

• Exosphere

Tags

NGSS.MS-ESS2-5