Solar energy is treated as the energy source of the future. Write any two solar devices working on solar energy that can be utilised in daily life. Enable Ginger Cannot connect to Ginger Check your internet connection or reload the browser Disable in this text field Rephrase Rephrase current sentence Edit in Ginger ×

Solar energy is a renewable energy and is considered as the future energy source as it do not produce any pollution and is easily available. It is the base of all other energy sources. There are many devices which are being used in our daily lives such as solar cells which are now being increasingly used in cars, houses, etc. They convert solar energy directly to electrical energy. Another device which works on solar energy is solar cooker which is used to heat the food materials. In this case, the solar energy is converted to heat energy.

Match the suitable renewable and non-renewable resources. Sources A B C Renewable Coal Wind Petroleum Non-renewable Hydrogen Natural gas Solar energy

Renewable sources: Wind, solar energy, hydrogen. A renewable resource, also known as a flow source, is a natural resource which will replenish to replace the portion depleted by usage and consumption, either through natural reproduction or other recurring processes in a finite amount of time in a human time scale. Non-renewable: Coal, petroleum, natural gas. A non-renewable resource (also called finite resource) is a natural resource that cannot be readily replaced by natural means at a pace quick enough to keep up with consumption. An example is carbon-based fossil fuels.

Match the pairs. Group 'A' Group 'B' (1) Rolling object (a) Heat energy (2) Food (b) Atomic energy (3) Stretched bow (c) Kinetic energy (4) Sunlight (d) Potential energy (5) Uranium (e) Chemical energy

(1) Rolling object - (c) Kinetic energy A rolling object has kinetic energy. The kinetic energy is the energy that an object has due to its motion. (2) Food - (e) Chemical energy The food has stored chemical energy. When the bonds of compounds break in food due to the chemical reaction, it gives out energy. (3) Stretched bow - (d) Potential energy The energy possessed by a stretched bow is an example of potential energy that is in a body by virtue of its shape or position. (4) Sunlight - (a) Heat energy The sunlight contains heat energy. The heat energy from the sun is used in solar cookers to heat and cook food. Heat is also produced by the burning of fuel. Heat is commonly measured in the unit ‘calorie’. (5) Uranium - (b) Atomic energy The energy possessed by Uranium is an example of atomic energy. The heat liberated during the fission of atoms of heavy elements such as uranium, thorium is used to generate electricity. Group A Group B (1) Rolling object (c) Kinetic energy (2) Food (e) Chemical energy (3) Stretched bow (d) Potential energy (4) Sunlight (a) Heat energy (5) Uranium (b) Atomic energy

EASY

Earn 100

What is an example of electrical energy?

Important Questions on Work and Energy

HARD

Science>Physics>Work and Energy>Different Forms of Energy

The solar constant at a place is

1.4 kw / m^{2}

. The solar energy received by an area of

4 m^{2}

per second at this place is:

EASY

Science>Physics>Work and Energy>Different Forms of Energy

Solar energy is treated as the energy source of the future. Write any two solar devices working on solar energy that can be utilised in daily life.

MEDIUM

Science>Physics>Work and Energy>Different Forms of Energy

Give an example of non-conventional energy with the help of which electricity can be generated.

EASY

Science>Physics>Work and Energy>Different Forms of Energy

What is biogas? Name any two main constituents of biogas.

MEDIUM

Science>Physics>Work and Energy>Different Forms of Energy

Match the suitable renewable and non-renewable resources.

Sources	A	B	C
Renewable	Coal	Wind	Petroleum
Non-renewable	Hydrogen	Natural gas	Solar energy

MEDIUM

Science>Physics>Work and Energy>Different Forms of Energy

Consider the following statements and choose the correct alternative.

Statement - $I$ : Heating capacity of biogas is more than that of biomass.

Statement - $II$ : Biogas produces lesser pollution as compared to biomass.

MEDIUM

Science>Physics>Work and Energy>Different Forms of Energy

List any three advantages and disadvantages of solar energy.

EASY

Science>Physics>Work and Energy>Different Forms of Energy

What gases are produced in anaerobic sludge digesters?

MEDIUM

Science>Physics>Work and Energy>Different Forms of Energy

Name the major constituent of biogas. Write the properties of biogas which make it a good fuel.

MEDIUM

Science>Physics>Work and Energy>Different Forms of Energy

Name the two devices that work using heat energy of the sun.

HARD

Science>Physics>Work and Energy>Different Forms of Energy

Explain in brief the biogas production process with the help of a labelled figure.

MEDIUM

Science>Physics>Work and Energy>Different Forms of Energy

Correct statement, if it is wrong.

India is called the 'country of winds'.

EASY

Science>Physics>Work and Energy>Different Forms of Energy

Explain the biogas plant with a neat labelled diagram.

MEDIUM

Science>Physics>Work and Energy>Different Forms of Energy

Explain the working of a solar water heater with the help of a labelled diagram.

MEDIUM

Science>Physics>Work and Energy>Different Forms of Energy

What is energy management?

EASY

Science>Physics>Work and Energy>Different Forms of Energy

State an example of renewable resource.

MEDIUM

Science>Physics>Work and Energy>Different Forms of Energy

Match the pairs.

Group 'A'	Group 'B'
(1) Rolling object	(a) Heat energy
(2) Food	(b) Atomic energy
(3) Stretched bow	(c) Kinetic energy
(4) Sunlight	(d) Potential energy
(5) Uranium	(e) Chemical energy

EASY

Science>Physics>Work and Energy>Different Forms of Energy

Which of the following is an example of stored energy?

MEDIUM

Science>Physics>Work and Energy>Different Forms of Energy

What is ‘green energy’?

MEDIUM

Science>Physics>Work and Energy>Different Forms of Energy

What are the various forms of energy?

What is an example of electrical energy?

Important Questions on Work and Energy

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