Question
What are natural resources? Give their types.
✓
Answer
Natural resources are raw materials or substances that are found naturally in nature and have no interference of mankind. These resources are benefical to mankind.
They are of two types:
- Renewable resources are those that can be regenerated, replaced, recovered and are constantly available. Eg: water, wind and sun are renewable resources.
- Non-renewable resources are those that cannot be replenished once exhausted. Eg: minerals and fossil fuels are non-renewable resources.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
What do we get from cereals, pulses, fruits and vegetables?
You want to wear your favourite shirt to a party, but the problem is that it is still wet after a wash. What steps would you take to dry it faster?
Two balls of the same size but of different materials, rubber and iron are kept on the smooth floor of a moving train. The brakes are applied suddenly to stop the train. Will the balls start rolling? If, so in which direction? Will they move with the same speed? Give reasons for your answer.
How do animals of Porifera differ from animals of Cnidaria?
- Identify figures A and B.
- Which is called tesselated and payement epitheliurn?
- Which one lines the gastrointestinal tract and epiglottis?
- Which one allows diffusion of substances?
A piece of stone is thrown vertically upwards. It reaches the maximum height in 3 seconds. If the acceleration of the stone be 9.8m/s2 directed towards the ground, calculate the initial velocity of the stone with which it is thrown upwards.
A hollow plastic ball is taken to the bottom of a trough of water and released there (see adjoining figure).
- What happens to the ball?
- Give reason for this phenomenon.
Give three functions of blood.
The substance X normally exists in a physical state which can flow easily but does not fill its vessel completely. It also turns anhydrous copper sulphate blue. When substance X is cooled excessively, it changes into a substance Y which has a fixed shape as well as a fixed volume. If, however, the substance X is heated strongly, it changes into a substance Z which has neither a fixed shape nor a fixed volume.
- Name the substances (i) X (ii) Y and (iii) Z.
- What is the process of conversion of X into Y known as?
- At which temperature X gets converted into Y?
- What is the process of conversion of X into Z known as?
- At which temperature X gets converted into Z?
A constant force acts on an object of 5kg for a period of 2s. It increases the velocity of an object from 3m $s ^{-1}$ to 7m $s ^{-1}$. Find the magnitude of the applied force. Now, if the force was applied for a period of 5s, then what would be the final velocity of the object?
→