Tag: solar energy

Questions Related to solar energy

What type of reactions occurring inside the sun produced solar energy?

evs solar energy water cycle earth's energy budget solar energy and its applications

  1. nuclear fusion reactions

  2. nuclear fission reactions

  3. nucleophilic substitution reactions

  4. electrophilic addition reactions

Show answer
Correct Option: A
Explanation:

Energy obtained by the Sun in form of heat and light is due to the nuclear reaction: fusion reaction taking place in the Sun. Hydrogen atoms collide to combine with each other to form a heavier molecule Helium, this results in release of a large amount of energy.

The main source of all types of energy on  the Earth is :

evs solar energy water cycle earth's energy budget solar energy and its applications

  1. Coal

  2. Moon

  3. Petroleum

  4. Sun

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Correct Option: D

The Sun gives us ________ and _________ energy.

evs solar energy water cycle earth's energy budget solar energy and its applications

  1. sound, light

  2. heat, sound

  3. heat, light

  4. light, wind

Show answer
Correct Option: C
Explanation:

The Sun gives us heat and light energy.

The ultimate source of heat on the surface of the earth is

evs solar energy water cycle earth's energy budget solar energy and its applications

  1. Solar energy

  2. Radiation energy

  3. Nuclear energy

  4. Inner temperature of the Earth's crust

Show answer
Correct Option: A
Explanation:

Ultimate sorce of energy is the Sun. Living beings depend on the Sun for its sustainability. All other other sources of energy directly or indirectly are depended on the energy recieved by the Sun.

Sun is regarded as the ultimate source of energy because

evs solar energy water cycle earth's energy budget solar energy and its applications

  1. It is the most readily & abundantly available free renewable source of energy

  2. The amount of solar energy received by the earth per hour is much more greater than the total energy consumed by the world each year

  3. The energy derived from different sources is directly or indirectly obtained from sun.

  4. All of the above

Show answer
Correct Option: D
Explanation:

Solar energy is a renewable source of energy and is available abundantly and is free of cost. The other forms of energy such as wind energy, thermal energy, chemical energy obtained from plants, etc. are all obtained from Sun. hence sun is the ultimate source of energy as all energy chains start from it.

The existence of life on Earth is primarily due to

evs solar energy water cycle earth's energy budget solar energy and its applications

  1. the formation of fossil fuels on Earth.

  2. the energy from the Sun.

  3. the revolution of Earth around the Sun.

  4. the evolution of species.

Show answer
Correct Option: B
Explanation:

Life on Earth is primarily driven by the energy from the Sun.
A small portion of the Sun's energy reaching the Earth is absorbed by green plants through the process of photosynthesis. This energy is converted into chemical energy and stored in plants. In this process, carbon dioxide and water are converted into carbohydrates. These carbohydrates are used as food by the living organisms. The human beings and animals eat this food to carry out their life activities thus converting the chemical energy into mechanical energy.

Which of the following appliances use solar energy?
a. Water heater
b. Cooker
c. Cells
d. Watches

evs solar energy water cycle earth's energy budget solar energy and its applications

  1. A and C

  2. A, B and C

  3. C and D

  4. All of the above

Show answer
Correct Option: D
Explanation:

Water heater, cooker, cells and watches all use solar energy to create electrical energy.

Choose the correct option:

evs solar energy water cycle earth's energy budget solar energy and its applications

  1. Energy from Sun allows us to see stars.

  2. Sun is the prime source of energy in the universe.

  3. Energy from fossil fuels is primarily derived from solar energy.

  4. Earth rotates around the Sun due to the heat energy from the Sun.

Show answer
Correct Option: C
Explanation:
When light energy from stars reach Earth, they become visible.
Sun is the prime source of energy in solar system only.
Fossil fuels are derived from the decomposition of plants and animals buried under the Earth millions of years ago. Since these organic bodies were based on Sun, energy from the fossil fuels is primarily derived from the Sun.
Earth rotates around the Sun due to the gravitational force between two masses.

The main source of all types of energy on the Earth is :

evs solar energy water cycle earth's energy budget solar energy and its applications

  1. coal

  2. moon

  3. petrolium

  4. sun

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Correct Option: D

Which is the ultimate source of energy?

evs solar energy water cycle earth's energy budget solar energy and its applications

  1. Water

  2. Sun

  3. Uranium

  4. Fossil fuels

Show answer
Correct Option: B
Explanation:

Sun is the ultimate source of energy as all other forms are some how related to it .