Questions
Which of the following is the process of changing water vapour into water?
- Transpiration
- Perspiration
- Evaporation
- Precipitation
- Circulation
Water vapour gets added to air by _________________ and ______________.
- condensation, precipitation
- evaporation, condensation
- evaporation , transpiration
- transpiration, precipitation
- transpiration, condensation
The water that is evaporated from the oceans or seas again ____________ to form water and fills up the rivers and seas.
- condenses
- transpires
- evaporates
- precipitates
- photosynthesises
Which of the following are due to evaporation:
(a) Water drops appear on the outer surface of a packet of orange bar ice cream once it is taken out of the freezer.
(b) Fog on a cold winter morning.
(c) Steam rising from a hot pressure cooker when we are cooking.
- Only a
- Only b
- Only c
- Both a and c
- Both b and c
Which of the following is the correct term for the process where rain water is collected from the rooftop to a storage tank, through pipes?
- Water Cycle
- Conservation
- Harvesting
- Precipitation
- Drought
Which of the following statements is incorrect?
(a) The process of water changing into its vapour, is called evaporation.
(b) Transpiration takes place only during monsoon.
(c) Rainwater harvesting is a method of collecting and storing rain water.
- Only a
- Only b
- Only c
- Both a and b
- Both b and c
Due to lack of rains the wells, lakes, ponds get dried up and thereby creating water scarcity and as result droughts are possible.
What happens to the soil in such near drought conditions?
- The soil becomes more dry and patchy.
- The soil evaporates.
- The soil develops great cracks.
- The soil gets eroded with wind.
- The soil remains unaffected.
Many industries use ____________ water to produce everything from paints and fabric to leather and chemicals.
- sea
- rain
- fresh
- ground
- hard
___________________ happens after the levels in water bodies increase dangerously after excessive rainfall.
- Water cycle
- Drought
- Flood
- Precipitation
- Harvesting
Which of the following statements is correct?
- The life cycle of aquatic organisms is called the water cycle.
- Our Earth is covered by three-fourths of water.
- A variety of salts, like magnesium and potassium, are present in saline water.
- Rain harvesting causes the problem of depleting the ground water.
- Ocean and sea water contains many dissolved salts and is beneficial for drinking, agriculture and domestic purposes.
Aneesh noticed dew on the leaves of grass and on the iron grills and gates on winter mornings. He asked his mother about it. What did his mother tell him about it?
- It was evaporation
- It was transpiration
- It was condensation
- It was precipitation
- It was water vapour
Choose the option that has correctly matched Column A with Column B:
| Column A | Column B |
| 1. Evaporation | a. Clouds |
| 2. Transpiration | b. Water bodies |
| 3. Condensation | c. Plants |
- 1 - a, 2 - b, 3 - c
- 1 - a, 2 - c, 3 - b
- 1 - c, 2 - a, 3 - b
- 1 - b, 2 - c, 3 - a
- 1 - b, 2 - a, 3 - c
Match the above columns correctly:
| a. Plants | 1. Condensation |
| b. Oceans | 2. Transpiration |
| c. Clouds | 3. Evaporation |
- a - 1, b - 2, c - 3
- a - 1, b - 3, c - 2
- a - 2, b - 3, c - 1
- a - 3, b - 1, c - 2
- a - 2, b - 1, c - 3
Which of the following takes place during transpiration?
- The process by which water is converted from its liquid form to its vapour form.
- The absorption of water from air in plants.
- The process of water movement through a plant and its evaporation from aerial parts.
- The process of preparation of food by plants through absorption of water from soil.
- The process in which evaporated water converts back into droplets.
Directions: Answer the question that follows after considering the statement given below:
Our Earth is covered by two-thirds of water but most of the water is not potable.
Why is there scarcity of potable water?
- Most of the water is in the oceans.
- Most of the water contains aquatic life.
- Most of the water contains salt.
- Most of the water is frozen in glaciers.
- Most of the water is polluted.