EASY
Earn 100

Rewrite the following incorrect statement correctly.

Renewable resources produce a lot of waste products.

Important Questions on Energy

EASY
Write the name of one alternate source of energy.
MEDIUM
What are the disadvantages of fossil fuel? Explain in brief.
HARD

Find the correct statement.

EASY

A non-renewable resource is a natural resource. It can be replaced by natural process at a rate equal to or faster than its rate of consumption by humans.

Read this statement and say whether it is correct or incorrect. If it is incorrect, give the correct statement.

EASY
State the energy changes in the case of a ceiling fan while in use.
EASY
Which of the following is not an example of a bio-mass energy source?
MEDIUM
List the disadvantages of using fossil fuels.
EASY
State the energy changes in the case of an electric iron while in use.
EASY
What is meant by renewable and non-renewable sources of energy? Give one example of each
EASY

Correct the following sentence by changing the underlined word.

Ores are the building blocks of all rocks.

MEDIUM
In what way can we utilise energy from wind, water and sunlight to prevent the depletion of natural resources? How do you think this will help us to reduce the level of pollution in the environment? 
EASY

Distinguish between renewable and non-renewable resources.

EASY

Correct the following sentence by changing the underlined word.

Coal and petroleum are recyclable resources.

EASY
Where does the wax come from?
EASY

There is an unlimited supply of oil under the earth.  

EASY
Copper is a non-metallic mineral.
MEDIUM
Minerals from which metals are obtained are called fuels.
HARD
Describe the various uses of minerals.
EASY
Minerals are chemical substances that are man-made.
EASY

Correct the following sentence by changing the underlined word.

Resources which never get exhausted are called non-renewable resources.