Question

Tick() the correct option
1. Air supports combustion because it contains
() Nitrogen boxygen (@Carbon dioxice
ii. Which of these is the first artificial satellite?
(a)Sputniki (b)Apollo ! (C) Luma !
lii. Which of these simple machines helps to move heavier objects to a height?
(allever (b)inclined plane
(c) Pulley
iv. Which of these is a modified lever of the first class?
(a)Wodge (boxed pulley (e)wheel and axle
v. Which of these is caused due to air pollution?
(a)Asthma (b) Deafness (c)Cholera
2. Give answer in one word or a few words:
1. The first artificial satellite
ii. The first person who visited the moon.
lil. The layer of atmosphere in which aircrafts fly
iv. The tongs are example of
v. Hot gases and magma come out of the earth through this crack or opening
3. Match the following
Column A
Column B
I Wheel and axle (0) No atmosphere
ii. Wedge
(b) Wheelbarrows
ini. Stair case (c) Ozone layer
iv. Moona () Inclined plane
v. Stratosphere (c) (c) Razors
4. Write (T) for true and (F) for a false statement
1. Simple machine increase the work
1. Shadows are the shortest in the morning
iii. Fishermen move towards the sea during high tide.
iv. Sorghum is a drought resistant crop
v. We should panic when a calamity occur
in terms (any live):​

Answer 1

Answer:

oxygen

sputnik

lever

not know

asthma

2--sputnik

Neil arm strong

stratosphere

not know

not know