4th E – Learning Class Test
Basic Science
Topic : Air
Air is a colourless, odourless and tasteless mixture of gases ( oxygen and nitrogen).
Air has weight, it occupies space and it is present every where.
What is pressure? Pressure is define as the force exerted over a unit surface area. This means that air pressure is the force exerted by air by per unit area.
Set Work.
1. Air is present inside
the water (Yes / No)
Give reason why air
is present inside the
water.
2. _______ pressure is
the force exerted by
air.
Assignment
1. Write the two gases
that are present in
air.
2. Give two reasons
why air has weight
4th E – Learning Class
Test
1. What are factors of
numbers?
2. Prime numbers are the
numbers that have
two factors only
number one (1) and
the given number
itself. (True/False)
3. Wages can be paid
daily, weekly and
hourly
4. Unemployment can
lead to prostitution,
taking of hard drugs
and _____________
5. What is technology?
6. Write out three
examples of energy
7. Potential energy is the
energy at rest
( Yes / No)
. Write the plural and
following pronoun
Plural. Singular
8. Me. ________
9. _____. Ours
10. I. ______
