6.3 Lesson 6 "Understanding Air" Questions

What is the main component of the air we breathe?

• Oxygen

• Argon

• Nitrogen

• Carbon dioxide

Which of the following is not considered a gas in the air?

• Water vapor

• Pollen

• Argon

• Oxygen

Relative humidity is measured as a percentage. What does a 100% relative humidity indicate?

• The air is completely dry

• The air has reached the maximum amount of water vapor it can hold

• The air is made only of water vapor

• The air is free from pollutants

Tags

NGSS.MS-ESS2-4

Which of these gases is present in the smallest amount in the air?

• Nitrogen

• Oxygen

• Argon

• Carbon dioxide

What term describes water in its gas form?

• Ice

• Water vapor

• Liquid water

• Humid air

What tool can be used to measure the amount of water vapor in the air?

• Thermometer

• Hygrometer

• Barometer

• Anemometer

Which of the following substances can be found in the air besides gases?

• Argon

• Water vapor

• Dust

• Carbon dioxide

Which gas makes up approximately 21% of the air?

• Nitrogen

• Oxygen

• Water vapor

• Argon

What does a reading of 39% relative humidity indicate?

• The air is dry

• The air is at its maximum water vapor capacity

• The air is about halfway to the maximum water vapor capacity

• The air is completely saturated

Tags

NGSS.MS-ESS2-4

What is the role of humidity probes?

• To measure temperature

• To measure air pressure

• To measure the amount of water vapor in the air

• To measure wind speed