1.

The layer of the atmosphere in which air travel is most convenient is

2.

The weather on earth is determined by changes in temperature, pressure and winds that take place in the

3.

The gas in the stratosphere that absorbs ultraviolet rays to minimize the heat reaching the earth's surface is

4.

Which of the following substances contribute(s) to the depletion of the ozone layer?

I. Carbon (II) oxide
II. Chlorofluorocarbon
III. Carbon (IV) oxide

5.

The following substance are air pollutants except

6.

The layer of the atmosphere in which air travel is most convenient is

7.

Which of the following statements about sea breeze are correct? Sea breeze occurs

I. during the day.
II. during the night.
III. as a result of convection currents.

8.

Which of the following statements about sea breeze is/are correct? It

I. occurs during the night.
II. occurs during the day.
III. blows towards the sea.

9.

The presence of methane and carbon (IV) oxide in the air is the main cause of

10.

Which of the following factors contribute to tidal waves experienced on the sea? The

I. gravitational force of the sun and moon on the sea
II. centripetal force created by the rotation of the earth around its axis
III. occurrence of cyclones

11.

The weather on earth is determined by changes in temperature, pressure and winds that take place in the

12.

Which of the following statements about wind are correct?

I. It is an air mass
II. It moves from an area of high pressure to an area of low pressure
III. It moves from an area of low pressure to an area of high pressure

13.

The gas in the stratosphere that absorbs ultraviolet rays to minimize the heat reaching the earth's surface is

14.

Which of the following substances contribute(s) to the depletion of the ozone layer?

I. Carbon (II) oxide
II. Chlorofluorocarbon
III. Carbon (IV) oxide

15.

The most important climate factor affecting crop production in West Africa is

16.

The SI unit of electric charge is

17.

Ozone layer depletion results in

18.

Which of the following statements are correct?

I. Greenhouse effect can be reduced by afforestation.
II. One effect of ozone layer depletion is global warming.
III. Greenhouse effect is reduced by bush burning.

19.

43. Which of the following statements about air mass are correct?

I. Has uniform temperature.

II. Has non-uniform pressure.

III. Forms over large expanse of land and water.