Wind Energy

Q.

What causes winds?

Q. Differentiate between Geothermal energy and Tidal energy?

Q.

The moving air is called _______

Q.

Which form of energy is possessed by wind?

1. Kinetic energy

2. Potential energy

3. Heat energy

4. Nuclear energy

Q.

How are winds formed?

Q.

The power generated in a windmill depends on the ___ of wind

Q.

Give two uses of wind energy?

Q.

The energy is conserved during the production of hydroelectricity. Explain it.

Q.

(a) What is wind ? What type of energy is possessed by wind ?
(b) Explain how, wind energy can be used to generate electricity. Illustrate your answer with the help of a labelled diagram.
(c) State two advantages of using wind energy for generating electricity.
(d) Mention two limitations of wind energy for generating electricity.

Q. How has the traditional use of wind energy been modified for our convenience ?

Q.

What are the disadvantages of wind energy?

Q. Windmills convert energy into energy.

1. electrical
2. mechanical
3. sound
4. light

Q.

What is wave energy? How is it used to generate electricity?

Q.

The use of one of the following is eco-friendly. This one is:
(a) cars for transportation
(b) polybags for shopping
(c) windmills for generating power
(d) dyes for colouring clothes

Q.

What type of energy is possessed by the wind?

Q. Wind blows from low pressure region to high pressure region.

1. False
2. True

Q.

What are the limitations of:
a) Solar energy?
b) Wind energy?

Q. Name the original source of wind energy.

Q.

What is the primary source of wind energy?

1. Moon

2. Sun

3. Hot magma

4. Gravitation

Q.

Give two examples to prove that wind has energy. Name the kind of energy possessed by wind.

Q.

Electricity generated by wind is another form of solar energy. explain.

Q.

Explain, briefly, how a windmill works?

Q.

How is sunlight responsible for wind energy?

1. Frictional Force

2. Gravitational Force

3. Magnetic Force

4. Coriolis Effect

Q. The uneven heating of the earth's surface causes the wind to flow.

1. False
2. True

Q.

Select the correct statements from the following.

(i) Wind energy is renewable source of energy.

(ii) Installation cost of wind mill is low.

(iii) Wind mills are generally installed in populated areas.

(iv) Energy produced from wind mills is non-polluting.

1. Statement (i), (ii) and (iii) are correct.

2. Statement (ii) and (iii) are correct.

3. Statement (i), (ii) and (iv) are correct.

4. Statement (i) and (iv) are correct.

Q. Sort the following process in the correct order for windmill.

1. Rotation of blades
2. Electrical energy produced
3. Turbine rotates
4. Blowing of wind

Q. Question 3
How has the traditional use of wind and water energy been modified for our convenience?

Q.

Which energy can be harnessed from the sea?

1. Tidal energy

2. Wave energy

3. Ocean thermal energy

4. Solar energy

5. Geothermal energy

1. 1, 2 and 3

2. 3, 4 and 5

3. 1, 2 and 4

4. 1, 2 and 5

Q.

State True or False:

Floating generators are used in the sea to harness wave energy.

1. wave energy

2. tidal energy

Q. The power generated in a windmill:

1. is more in rainy season since damp air would make more air mass hitting the blades
2. depends on wind speed
3. depends on the height of the tower
4. can be increased by planting tall trees close to the tower