Question

9. The earth's atmosphere is a blanket of -
a. dust particles
b. water vapour
d. gases
c. wool
10. Which of the following gases is not a green house gas -
a. carbon dioxide
b. oxygen
d. CFCS
c. methane
(10 X 1 =10)
Q.2- Fill in the blanks:-
1. Plants and trees hold the soil together by their roots
2. The surface of the moon is very smooth.
3. The air we breathe out is called Eochales a
4. Most simple a machines make use of is found force.
air.
5. When a solid dissolves in a liquid a
is formed.
6. An inclined plane is a
which makes work easier.
7. Running water washes away soil of
8. Tides are caused in the oceans due to the
of the moon.
9. The higher we go the
is the air pressure.
10.
forces like wind, rain and running water help in soil
formation.
Q.3- Write 'True' or 'False':-
'':-
1. Drought is caused by heavy rainfall.
(10 X 1 =10)
[ ]
2. Shale is used as an ornamental rock.
[ 1
3. Rock oil and black gold are some other names of coal.
4. A famine is a strong wind accompanied with heavy rains. [ ]
5. The layers of the earth under the plates are stationary.
[ ]​

Answer 1

Answer:

(a)

(d)

(c)

True

False

False

True True

Answer 2

9. a.dust particles

10. b. Oxygen