Advertisements
Advertisements
Question
Fill in the blank
__________ are examples of renewable energy resources.
Solution
Sun, water, wind are examples of renewable energy resources.
APPEARS IN
RELATED QUESTIONS
"The calorific value of cooking gas (LPG) is 50 kJ/g". What does it mean?
What is meant by a renewable source of energy? Give two examples of renewable sources of energy.
What is the difference between a renewable and a non-renewable source of energy? Explain with examples.
Name two sources of energy that you think are renewable. Give reason for your choice.
Which of the following is not a renewable source of energy?
(a) wind
(b) flowing water
(c) fossil fuels
(d) fuel wood
Most of the fuels contain carbon as one of the constituents. Name a fuel which has very high calorific value but not contain carbon.
Which gaseous fuel is being used increasingly in transport vehicles like cars and buses these days?
Which of the following is not produced by the burning of fossil fuels?
(a) nitrogen oxides
(b) sulphur oxides
(c) sodium oxides
(d) carbon oxides
Fossil fuels are energy rich compounds of an element X which were originally made by the plants with help of sun's energy.
Name another element which is usually found in combination with X in fossil fuels.
Which of the following is not an example of a biomass energy source?
(a) wood
(b) biogas
(c) atomic energy
(d) cow-dung
The source of energy of the sun is:
(a) conversion of hydrogen gas into helium
(b) conversion of carbon fuel into carbon dioxide
(c) burning of hydrogen gas present in the sun
(d) disintegration of uranium into barium and krypton
Why is the use of wood as a fuel not advisable although wood is a renewable source of energy?
State whether the following is True or False.
Renewable energy resources have limited supply in nature.
State whether the following is True or False.
China, the USA, and Spain are major producers of wind energy.
Name a few major producers of petroleum in the world.
Give an account of the use of solar energy.
Fill in the blanks in the following sentence.
Coal is one of the ______ used to cook food.
Write True/False against the following statement.
Wildlife is an exhaustible natural resource.
Fill in the blanks and complete the story.
About 300 million years ago, the earth had dense ______ in low lying wetland areas. Due to natural processes like ______ these forests got buried under the ______ As more ______ deposited over them, they were compressed. The ______ also rose as they sank deeper and deeper. Under high ______ and high ______ , dead plants got slowly converted into coal.
