Science Atmosphere and Air Pressure Study Guide

What percentage of the troposphere is oxygen?

• 50.2%

• 10.8%

• 90.9%

• 20.9%

What percentage of the troposphere is nitrogen?

• 78%
• 50%
• 90%
• 25%

What percentage of the troposphere is gases other than nitrogen and oxygen?

• 10%
• 50%
• 75%
• 1.1%

What is the definition of meteorology?

• Meteorology is the scientific study of the atmosphere, weather, and climate.
• Meteorology is the study of rocks and minerals.
• Meteorology is the study of the ocean and marine life.
• Meteorology is the study of celestial bodies and their movements.

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

NGSS.MS-ESS2-4

NGSS.MS-ESS3-5

What is the definition of meteorologist?

• A scientist who studies the ocean and marine life.
• A weather reporter on television.
• A scientist who studies the atmosphere and weather patterns.
• A person who studies meteors and asteroids.

What is the definition of compress?

• To force into a smaller space by applying pressure or squeezing it together.

• To keep the size or volume of something constant by applying pressure or squeezing it together.
• To increase the size or volume of something by applying pressure or squeezing it together.
• To expand the size or volume of something by applying pressure or stretching it apart.

What is the definition of expand?

• To become smaller in size
• To stay the same size
• To disappear completely
• To increase the space gas occupies.

In which atmospheric layer does all weather occur?

• exosphere

• stratosphere

• thermosphere

• troposphere

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

How does the ozone layer help life on Earth?

• It produces oxygen for the atmosphere.

• It protects Earth from meteors.

• It absorbs damaging ultraviolet radiation from the Sun.

• It reflects most of the Sun's radiation to keep the planet cool.

Where does the greatest atmospheric pressure occur?

• mesosphere

• stratosphere

• thermosphere

• troposphere