Advertisements
Advertisements
Question
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.
Advertisements
Solution
About 300 million years ago, the earth had dense forests in low lying wetland areas. Due to natural processes like floods, these forests got buried under the soil. As more soil deposited over them, they were compressed. The temperature also rose as they sank deeper and deeper. Under high pressure and high temperature, dead plants got slowly converted into coal.
APPEARS IN
RELATED QUESTIONS
Classify the following into renewable and non-renewable sources of energy:
Coal, Wind, Tides, Petroleum,Wood, Natural gas
Most of the fuels contain carbon as one of the constituents. Name a fuel which has very high calorific value but not contain carbon.
Name the component which is found in natural gas well as in biogas.
Compare the sun and the fossil fuels as the sources of energy.
Can you tell?
What is ‘green energy’?
Why should we conserve the non-renewable sources of energy?
State the main difference between the renewable and non-renewable sources of energy.
Choose the odd one:
Various materials which are obtained from nature are called natural resources. Which of the following is not a natural resource?
Some natural resources are given below. Classify them into the exhaustible and inexhaustible natural resources.
| air, coal, natural gas, sunlight, petroleum, minerals, forests, oxygen |
