Question

Answers all the questions properly neat and clean..​

Answer 1

Answer:

1:- Sun, Electric bulb &Star's

2:- It give's us Vitamin-D which keeps our bones healthy

3:- When an Object blocks light from passing through It then the shadow is formed.

Explanation:

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Answer 2

Answer:

D.Match The columns

Shadows formation - needs source of light

Shadow is - a dark area

Shadows are bigger - when source of light is near

Sun gives us - light to see things around us

Shadows are smaller - when source of light is far

E.Answer the following questions:-

Ans:1)The three sources of light are

•the sun

•the moon

•stars

Ans:2)Sunlight helps boost a chemical in your brain called serotonin, and that can give you more energy and help keep you calm, positive, and focused. Doctors sometimes treat seasonal affective disorder (SAD) and other types of depression linked to low levels of serotonin with natural or artificial light.

Ans:3)Shadows are formed when an opaque object or material is placed in the path of rays of ligh

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