Geothermal Energy

Q. The innermost layer of the earth is called as .

1. core
2. crust
3. mantle

Q. Which of the following sources of energy are not derived from the sun ?
Biomass, wind, Ocean thermal energy, Geothermal energy, Nuclear fuels, Hydroelectricity, Wave energy, Coal, Petroleum, Tidal energy

Q.

What are "hot spots"?

Q.

Most of the sources of energy that we use represent stored solar energy. Which of the following is not ultimately derived from the sun's energy ?
(a) wind energy (b) geothermal energy (c) fossil fuels (d) biomass

Q.

What name is given to the heat energy obtained from the hot rocks inside the earth ?

Q.

What is geothermal energy?

Q.

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

Q.

Which of the following statement is correct with respect to geothermal energy?

1. It degrades the fertility of the soil.

2. It has high cost of production.

3. It uses the heat energy inside the earth crust to produce energy.

4. It uses the heat of the sun to produce energy.

Q.

Geothermal energy is produced by the :
(a) fission of radioactive materials
(b) burning of coal inside the coal mines
(c) combustion of natural gas deep inside the earth
(d) fusion of radioactive substances

Q. Which of the following are the major disadvantages of geothermal energy?

1. Easy to setup
2. Difficult to transport
3. Land degradation
4. Limited location

Q.

(a) What is geothermal energy ?
(b) What is the source of heat contained in geothermal energy ?
(c) Explain how, geothermal energy is used to generate electricity.
(d) State two advantages of geothermal energy.
(e) State two disadvantages of geothermal energy.

Q. Which of the following statement is correct with respect to geothermal energy?

1. It uses the heat of the sun to produce energy.
2. It degrades the fertility of the soil.
3. It has very high cost of production.
4. It uses the heat energy inside the earth's crust to produce energy.

Q.

Due to geological changes, molten rocks formed in the deeper hot regions

of earth’s crust are pushed upward and trapped in certain regions called as.

1. Hot regions

2. Hot spots

3. Hot rocks

4. Hot springs

Q.

What energy transformation takes place in the generation of power from Geothermal energy?

1. Chemical energy to electrical energy

2. Thermal energy to Kinetic energy to electrical energy

3. Potential energy to electrical energy

4. Thermal energy to chemical energy to kinetic energy

Q.

The energy possessed by steam produced by geothermal energy is _________.

1. potential energy

2. kinetic energy

3. hydroelectric energy

4. Both (a) and (b)

Q. Question 28
Energy from various sources is considered to have been derived from the sun. Do you agree? Justify your answer.

Q. Inner core of Earth is made up of :

1. Iron
2. Copper
3. Nickel-Iron alloy
4. Platinum

Q. The energy generated and stored inside the Earth’s crust is __________.

1. Geothermal energy
2. Nuclear energy
3. None of these
4. Tidal energy

Q.

Why there is hot water at the below of the hoover dam

Q. Wells can be drilled into the earth to harvest energy.

1. solar
2. geothermal
3. sound

Q. The central part of the earth is called its

Q.

Tidal energy is harnessed by constructing

1. Hot springs

2. Tidal barrages

3. Windmills

4. Petrol crops

Q. Geothermal energy can be used to produce electricity.

1. True
2. False

Q. Most of the sources of energy we use represent stored solar energy. Which of the following is not ultimately derived from the sun's energy?

1. Wind energy
2. Ocean thermal energy
3. Geothermal energy
4. None of these

Q. A certain form of energy does not cause any pollution and is easily converted into electricity. It is not obtained directly or indirectly from the Sun. It is technically very difficult and expensive to obtain this form of energy and it is not available everywhere. What is this form of energy called?

1. Wind energy
2. Nuclear energy
3. Geothermal energy
4. Tidal energy

Q. State two advantages and two disadvantages of geothermal energy.

Q. The molten material mixed with gases in the mantle of the Earth is called as.

1. magma
2. lava
3. core

Q. A certain form of energy which is not sourced directly or indirectly from the sun and does not cause any pollution is very easily converted into electricity. This form of energy is, however, not available everywhere. Moreover, it is technically very difficult and expensive to obtain it. Name the form of energy.

Q. What type of energy is described from heated ground water?

1. Hydroelectric
2. Nuclear
3. Solar
4. Geothermal

Q. Which of the following sources of energy are not derived from the sun ? Biomass, Wind, Ocean thermal energy. Geothermal energy, Nuclear fuels, Hydroelectricity, Wave energy, Coal, Petroleum, Tidal energy.