Water Cycle

Q. How do forests play an important role in maintaining the water cycle?

Q. Definitions of all atmospheric cycles...
Water cycle
The nitrogen cycle
The carbon cycle
The oxygen cycle.....

Q. Semi-arid zone of India has an average annual rainfall of about_________.

1. 100 – 200 cm
2. 50 – 100 cm
3. 20 – 50 cm
4. More than 200 cm

Q.

Which are the two main climatic factors responsible for soil formation?

Q.

What is condensation nuclei ?

Q.

How is rain produced ?

Q.

Explain water cycle in detail.

Q.

Question 4
How are clouds formed?

Q.

What is rain gauge?

Q.

Transpiration is a process in which plants ______________ .

1. absorb water from air

2. release water as vapour

3. absorb water from ground

4. make food from water

Q. Transpiration is highest during season.

1. winter
2. summer
3. rainy

Q. What happens to water vapour when they reach high in the atmosphere?

Q.

Which of the following phenomena are involved in the formation of clouds and rain?

1. Sublimation and condensation

2. Evaporation and condensation

3. Condensation and evaporation

4. Evaporation and sublimation

Q.

What is rainfall? What are its types?

Q.

Which one of the following is not a function of transpiration?

1. Cooling of leaves

2. Excretion of minerals

3. Uptake of water

4. Uptake of minerals

Q.

Describe biological water cycles.

Q. List the different ways through which water evaporates into air

Q.

Give reason for the following.

Water from lakes, rivers, etc does not vaporize rapidly.

Q.

Question 10
One of the following processes is not a step involved in the water-cycle operating in nature
(a) evaporation
(b) transpiration
(c) precipitation
(d) photosynthesis

Q.

When water vapors condenses near the ground there is:

1. Fog

2. Snowfall

3. Rainfall

4. Hail storm

Q. Which one of the following is not a protein rich food?

1. Mutton
2. Crab
3. Pulses
4. Tomato

Q.

A desert plant whose leaves are reduced to spines.

Q. Write a short note on atmosphere. [3 MARKS]

Q.

Enumerate the factors that influence movement of air.

Q.

Dew on the morning grass is due to condensation.

1. True
2. False

Q. The figure given below represents an experimental set-up with a weighing machine to demonstrarte a particular process in plants. The experimental set-up was placed in bright sunlight. Study the diagram and answer the following questions: [5 MARKS]

(a) Name the process intended for study.
(b) Define the above-mentioned process.
(c) When the weight of the test tube (A and B) is taken before and after the experiment, what is observed? Give reasons to justify your observation in A and B.
(d) What is the purpose of keeping the test tube B in the experimental set-up?

Q.

Question 10
One of the following processes is not a step involved in the water-cycle operating in nature
(a) evaporation
(b) transpiration
(c) precipitation
(d) photosynthesis

Q.

Define the term transpiration.

Q.

What is water cycle ? Give its other name.

Q.

Write a note on the hydrosphere and water cycle.