Question

Subject: Elementary Science

Q1. Answer the following questions in short:

a. What is water cycle?

b. How can we prevent water pollution?

c. How does heat transfer?

d. Give two examples of energy transformation.

e. How many states of matter are there and what are they?

f. Write two names of airborne diseases.

g. How can we prevent infectious diseases?

h. Write three examples of resources which can be used as alternative resources.

i. How can we use natural resources wisely?

j. Write two impacts of population growth on environment.

Q2. Fill in the blanks with correct word or words:

a. When we eat food, water helps to ________ it.

b. Water should be boiled more than _______________ to kill the germs.

c. The main source of all energy is ____________________.

d. Infectious diseases spread through ______________ .

e. __________________ is transmitted through bites of dogs.

f. Puberty is a _____________ change.

g. The ________ for natural resources is increasing as the human population is

growing.

h. Oil, coal and natural gas are ________________ resources.

i. __________________ can cause soil erosion and landslides.

j. It is very important for us to learn _____________n
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Answer 1

Answer:

2 a .swallow

d. contact

f .hormonal

g.danger

h.natural

Answer 2

Explanation:

answer 2

a) soften the food by generating saliva.

b) 5 minutes

c ) sun or solar energy

d) contact or air

e)

f) natural harmonal change ( like coming hairs on genital parts )

g) consumption

h) non renewable

i ) heavy rainfall