Condensation

Q.

1. What Is The Difference Between Fog And Dew

Q.

Near the earth’s surface __________air rises up whereas ___________ air comes down.

Q. How is mist formed?

1. None of the above
2. It is formed when water droplets are suspended above the ground.
3. It is formed when water droplets are present high up in the air.
4. It is formed when water droplets are present in clouds.

Q. How is smog formed?

1. Smog is very dense fog, but contains no pollutants
2. Smoke from factories and vehicle mixes with fog, forming smog.
3. (a) and (b) above.
4. Smog is formed only during the summer due to the rain evaporating ata faster rate

Q. What is the difference between mist and fog?

1. Mist is much thicker than fog.
2. Mists can occur anywhere.
3. Mist contains a higher concentration of water droplets than fog.
4. Mists contains a lower concentration of water droplets than fog.

Q. Why is dew not seen on a cloudy day?

1. The temperature gets very warm.
2. Both (a) and (b)
3. The heat is released through convectional waves.
4. The heat gets trapped by clouds.

Q. Which of the following are the types of weathering?

1. Biological Weathering
2. Physical Weathering
3. Mechanical Weathering
4. Logical Weathering

Q. Fog, mist, snow, and hail are all phenomenon of ___________.

1. Oxygen gas
2. Water vapour
3. Nitrogen gas
4. Noble gases

Q.

1. Briefly state the importance of following constituents of air :

(d) Water vapour

Q. What happens when condensation happens at the atmospheric level?

1. It creates rain.
2. It creates snow.
3. It creates clouds.
4. It creates frost.

Q. Give examples of 'on-ground' condensation.

1. Groundwater
2. Freshwater
3. Dew
4. Frost

Q. Cloud seeding is a technique used to induce rain that was first used by USA in 1946. It has also been done in Karnataka and other places in India. What is it?

1. An agricultural practice that depends on clouds
2. Introduction of particles in clouds to decrease condensation
3. Making clouds and placing them in the sky
4. Trimming the clouds into seed like structures
5. An process of spreading dry ice on upper part of cloud to simulate precipitation process and cause rain