Atmosphere

Q. What are the two main constituents of atmospheric air?

1. Oxygen and Carbondioxide
2. Nitrogen and Carbondioxide
3. Oxygen and Nitrogen
4. Oxygen and Hydrogen

Q. Green plants produce ________ during photosynthesis.

1. oxygen
2. carbon dioxide
3. nitrogen
4. argon

Q. Which of the following elements are present in the atmosphere?

1. Nitrogen
2. Dust particles
3. Oxgen
4. Water vapour

Q. The most plentiful gas in the atmosphere is _________.

1. nitrogen
2. argon
3. oxygen
4. hydrogen

Q.

Which of the following layer of atmosphere contains the air that we breathe?

1. Mesosphere

2. Exosphere

3. Troposphere

4. Stratosphere

Q. Choose the correct statement(s) with regard to air pressure.

1. Air always moves from a high pressure area to a low pressure area.
2. High pressure is associated with cloudy skies and wet weather.
3. High temperature creates high pressure areas.
4. As altitude increases, pressure decreases.

Q. Which of the following forces is responsible for holding the atmosphere?

1. Coriolios force
2. Pressure gradient force
3. Gravitational force
4. None of the above

Q.

The atmosphere is held to the earth by

Q.

What is the atmosphere? What is it composed of?

Q. Name the different layer of Atmosphere.

Q. The blanket of air that surrounds the Earth is called ________.

1. Atmosphere
2. Biosphere
3. Hydrosphere
4. Lithosphere

Q. The huge blanket of air that surrounds the Earth is called _____.

a) atmosphere b) troposphere
c) mesosphere d) exosphere

Q. What are the sources of harmful gases and chemicals that pollute the atmosphere?

1. Vehicles
2. Power plants
3. Oil refineries
4. Industrial facilities

Q. Identify the role of atmosphere in our daily lives.

1. We use oxygen in the atmosphere to breathe.
2. Plants use carbon dioxide for photosynthesis.
3. Atmosphere helps in the formation of rain and snow.
4. Atmosphere protects us from the harmful UV and gamma rays from the sun.

Q. The blanket of air that surrounds the Earth is called ________.

1. Atmosphere
2. Biosphere
3. Lithosphere
4. Hydrosphere

Q. What is an air pollutant?

1. Anything that adds to the natural composition of air
2. Anything that takes away from the natural composition of air
3. Anything that brings changes to the natural composition of air
4. Anything that keeps the natural composition of air constant

Q. Layer of gases around the earth is called __________.

1. lithosphere
2. hydrosphere
3. stratosphere
4. atmosphere