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10We can see objects because of light energy.
Sound energy helps us to see things.
Electrical energy is used to operate computers and televisions.
Nuclear energy can produce heat as well as electricity.
Nuclear energy can produce heat as well as electricity.
Energy is not required to do work.
The capacity to do work is called energy.
Firewood and biogas are non-renewable sources of energy.
Fossil fuels are formed within a short period of time.
Conservation of energy helps to prevent energy crisis.
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Which energy helps us to talk to one another?
Which of the following is used to run factories?
Energy obtained from food is used mainly to:
Which is a renewable source of energy?
Which source of energy cannot be reused in a short time?
Petroleum products are also known as:
Which fuel is formed from fossils over millions of years?
Which energy source is best alternative for remote areas of Nepal?
Excessive use of non-renewable energy leads to:
Which of the following helps in saving energy?
We need ______ to do work.
The capacity to do work is called ______.
Firewood is obtained from ______.
The substance from which energy is obtained is called ______ of energy.
Solar energy is a ______ source of energy.
Diesel and petrol are ______-renewable sources of energy.
Coal and petroleum are called ______ fuels.
Burning fossil fuel ______ the environment.
Energy crisis occurs due to excessive use of ______-renewable energy.
Economic and proper use of energy is called ______ of energy.