Air around Us*

Earth is surrounded by an envelope of gases called the _____________.

• Hydrosphere

• Solar system

• Atmosphere

• Cloud bubble

Tags

NGSS.MS-ESS2-5

__________ gas occupies the major part of composition of air.

• Nitrogen

• Oxygen

• Carbon dioxide

The burning of fuel produces ______.

• Dew

• Wind

• Smoke

What do dust, smoke, salt, and chemicals have in common?

• They are gases in the air.
• They make up water vapor in the air.
• They are particles in the air.
• They are only found in pure air.

___________ gas is necessary for burning

• Oxygen

• Nitrogen

• Carbon dioxide

What are the percentages of the main gases on Earth?

• 78% oxygen, 21% nitrogen and 1% other
• 78% other, 21% oxygen and 1% nitrogen
• 78% nitrogen, 21% oxygen and 1% other
• 95% carbon dioxide and 5% oxygen

Which gas is released into the atmosphere by plants following photosynthesis?

• Oxygen

• Argon

• Carbon dioxide

• Nitrogen

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which of these makes up about 21 percent of the atmosphere?

• argon
• carbon dioxide
• nitrogen
• oxygen

What layer protects us from the sun's harmful rays?

• Protection layer

• Ozone layer

• Atmospheric layer

How to prevent air pollution?

• To plant trees

• To use bicycles or public transport instead of using private vehicles.

• All of the mentioned.

• To share the seat in car or bike to other person or the friend who is coming or going to the same destination or place where we are going to go to

Tags

NGSS.MS-ESS3-4