THE AGE OF MACHINES
I FILL IN THE BLANKS
a. A machine is a ____________that makes our work easier.
b. Most of the machines that we use today were invented over the last ___________ years ago.
c. ___________was the first metal to be discovered.
d. The second metal to be discovered was _____________
e. The earliest___________ articles found are about 6000 years old.
f. _________tools were used to cut down trees and clear forests for agriculture.
g. The discovery of ___________helped human progress faster.
h. _____________used the power of water to grind grains into flour.
i. The faster means of transport became possible with the invention of the ________________________
j. Smoke from several factories polluting the air during the _______________________________
k. __________ was the first fuel used in steam engines to produce steam.
l. ___________________is another source of energy found deep inside the earth.
m. __________________is used to run machines in several factories.
II NAME THE FOLLOWING.
a. The metal to be discovered after copper and bronze. ____________
b. The significant change from hand-made goods to machine-made goods which began in Britain in the 18th century. _________________________
c. The first person to make a small battery which could produce an electric current in a wire. __________________________
d. The force of flowing water of rivers used to generate electricity. _________________________
III IDENTIFY THE FOLLOWING PICTURES AND FILL IN THE BLANKS.
IV ANSWER THE FOLLOWING QUESTIONS IN 2 POINTS.
1. Why was the discovery of metal important?
2. What are the four alternative sources of energy? How are they useful? 2
3. What are the problems in using Coal as a source of energy?
4. What is hydro-electricity?
V ANSWER THE FOLLOWING QUESTIONS IN 3 POINTS.
5. What is Industrial Revolution? Briefly explain.
6. What led to the beginning of the Factory System?
7. How did early humans use the sailboats?
VI ANSWER THE FOLLOWING QUESTIONS IN 4 POINTS.
8. Why is the discovery of iron considered to be very important in the history of humans?
9. How has invention of steam engine revolutionalised life?
Please click on below link to download CBSE Class 5 Social Science The Age Of Machine Worksheet
