Atmospheric Pressure

Q.

1 bar of pressure is equal to __________ atm.

Q.

As we go higher into the atmosphere

Q.

State two factors that affect the atmospheric pressure as we go up.

Q.

A gas exerts pressure on the walls of the container. Give reason.

Q.

why trekkers and mountaineers usually carry chlorine tablets with them?

Q.

The pressure exerted by mixture of atmospheric gases on its surroundings and on the surface of the earth is known as ______.

Q.

What happens to atmospheric pressure as the altitude increases?

1. Increases

2. Decreases

3. Remains the same

4. Increases rapidly

Q.

The reason we are not crushed under the weight of air is, that the pressure inside our body is equal to the atmospheric pressure and cancels the pressure being exerted from outside.

1. True

2. False

Q. The pressure and wind systems are actually the impact of Lithosphere and Hydrosphere on ______.

1. Heterosphere
2. Homosphere
3. Atmosphere
4. Troposphere

Q.

How do the gases exert pressure?

1. The pressure exerted by a gas is due to theintermolecular attraction between the particles

2. The pressure exerted by a gas is due to the repulsions between the particles

3. The pressure exerted by a gas is due to the collisions between the particles and with the walls of the container

4. The pressure exerted by a gas is due to the collisions between the particles

Q. Air moves from a region of pressure to a region of pressure.

1. high
2. low
3. small
4. large

Q.

The pressure applied by the air which is present above us is known as ___ pressure.

Q.

Give reasons for the following.

Gases exert pressure on the walls of container.

Q.

How do the gases exert pressure?

1. The pressure exerted by a gas is due to the repulsions between the particles

2. The pressure exerted by a gas is due to the collisions between the particles and with the walls of the container

3. The pressure exerted by a gas is due to the collisions between the particles

4. The pressure exerted by a gas is due to theintermolecular attraction between the particles

Q. What is the level of mercury at normal atmospheric pressure?

1. 70 cm
2. 80 cm
3. 76 cm
4. 64 cm

Q. When the temperature increases atmospheric pressure _________.

1. increases
2. decreases
3. remains same
4. became zero

Q. At a high altitude the pressure is ___________.

1. Static
2. Zero
3. Very high
4. Very low

Q. The atmospheric pressure decreases at the rate of ______________.

1. 1 millibar/altitude of 10 meters
2. 1 millibar/altitude of 15 meters
3. 1 millibar/altitude of 18 meters
4. 1 millibar/altitude of 20 meters