In this post, you are going to read NCERT activity 14.2 class 10 science, sources of energy. You will find a complete explanation of activity 14.2 class 10 science with a conclusion.
NCERT Activity 14.2 Class 10 Science Sources of Energy
Activity 14.2Class 10 Science
· Consider
the various options we have when we choose a fuel for cooking our food.
· What
are the criteria you would consider when trying to categorize something like a
good fuel?
· Would
your choice be different if you lived?
a. In
a forest?
b. In
a remote mountain village or small island?
c. In
New Delhi?
d. Lived
five centuries ago?
· How
are the factors different in each case?
Explanation -
· We
have various options like wood, LPG, electricity, biogas, kerosene, etc.
· Criteria
for a good fuel
i.
It should be easily available
ii.
It should not produce a lot of smoke
iii.
It should be economical.
iv.
It should produce a lot of heat.
v.
It should be easy to store.
vi.
It should be transported easily.
· We
have different choices in different living conditions
i.
In the forest, we cannot obtain LPG or
electricity. So in such places, we would prefer wood as fuel.
ii.
In a remote mountain village or small
island, we would not be able to get electricity or LPG. Here we can get wind
energy, solar energy, and energy from flowing water. These can be converted into
electricity to cook food
iii.
In big cities like Delhi or Mumbai, Electricity
and LPG are easily available. So, we don’t need other sources of energy.
iv.
A century means 100 years. We live in the 21st
century and in the 16th century, there was no fossil fuel, or electricity
available. At that time wood, and cow dung was used.
· In
the each given situation, we choose fuel on the following basis
i.
We first
look for easily available fuel.in the forest, we would prefer wood because of its availability.
ii.
If there is more than one option
available, then we would prefer easy to use clean fuel.
iii.
If all the fuels are easily available,
clean, and easy to use, then we would prefer cost factor and efficiency.
Conclusion
From the above activity, we can understand that the fuel we use, should be
easily available, clean and cheap, and efficient.
Related Topics -
1. Next activity - Activity 14.3 Class 10 Science
2. Previous activity- Activity 14.1 Class 10 Science
2. NCERT solutions of Chapter 14
3. Extra Questions of Chapter 14
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