Role of Atmosphere

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

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

Q.

Carbon dioxide is necessary for plants. Why do we consider it as a pollutant?

Q. Why is the atmosphere essential for life?

1. It acts as a blanket and keeps the average temperature of the Earth.
2. It contains all the gases which are essential for sustaining life on the Earth.
3. Ozone layer present in the atmosphere prevents harmful UV rays from reaching the Earth.
4. Water cycle is not possible without atmosphere.

Q.

Define weather. [2 MARKS]

Q.

What Is Meant By Southern Oscillation? State And Important Feature Of It.

Q.

The day time temperature of moon is

1. 60 degrees Celsius

2. 70 degrees Celsius

3. 90 degrees Celsius

4. 110 degrees Celsius

Q.

What is the major component of atmosphere of Earth and Mars/Venus?

Q.

What kind of energy does water possess?

Q.

Question 35
In the coastal area, wind current moves from the sea towards the land during the day; but during the night it moves from land to the sea. Discuss the reason.

Q. Which of the following gases combines with haemoglobin to form carboxyhaemoglobin and reduces the oxygen carrying capacity of blood?

1. Carbon dioxide
2. Methane
3. Carbon monoxide
4. Sulphur dioxide

Q.

Life cannot sustain on Mars and Venus because of

1. Oxygen

2. Carbon dioxide

3. Nitrogen

4. Ozone

Q.

Land and sea breeze occur due to

1. Conduction

2. Convection

3. Radiation

4. None of these

Q.

Air consist of only oxygen which makes life possible on earth.

1. True

2. False

Q.

Why life exist on earth but not on venus and mars? [2 MARKS]

Q.

The coastal areas during day time are characterized by

1. Movement of air from land towards sea

2. The flow of air in any direction

3. Movement of air from sea towards land

4. Flow of air at a very high speed

Q.

Why is life on Mars and Venus planets not possible?

Q. The uneven heating of air over land and water causes_________.

1. Wind
2. Radiation
3. Both (a) & (b)
4. Vaporization

Q. When are the maximum and minimum temperatures likely to occur during the day? [1 MARK]

Q.

What is an environment?

Q.

In which part of the atmosphere do we live.

Q.

How dose the average temperature of Earth remain fairly steady?

Q.

Wind is caused due to the differences in atmospheric pressure.

1. False

2. True

Q.

Give role of atmosphere in climatic control.

Q.

Why is air called breath of life ? Enumerate functions of air or atmosphere.

Q.

The temperature on the moon varies from 110 degrees Celsius to -170 degrees Celsius. What is the possible reason for this?

Q. Wind was blowing from region A to region B. Suddenly the pressure of region B drops, while that of region A remains the same. Then, the speed of the wind will:

1. Decrease
2. Increase
3. Not change
4. Become zero

Q.

The wind is caused by uneven heating of air over land and water bodies.

1. True
2. False

Q. State true or false.
The atmosphere acts like a blanket and helps in controlling the climate. During the day time, it prevents the sudden rise of temperature and during the night, it prevents the heat from escaping away to the outer atmosphere.

1. True
2. False

Q.

What is the direction of air in coastal areas during the night?

Q.

Name two planets other than Earth which also have an atmosphere.