Review Chapter 5

Which one is the natural source of light?

• Sun

• Moon

• Torch

• Bulb

Which one is artificial source of light?

• Firefly

• Oil lamp

• Sun

• Star

Darkness is the _______ of light.

• Presence

• absence

Which one is the transparent object?

• Book

• Mobile

• Door

• Glass

A shadow is formed on the _______ side of the light.

• Same

• Opposite

• Both side

• None

When an object lets the light pass through it, we call it _______ object.

• Opaque

• Transparent

• None

Which one is opaque object?

• Glass

• Plastic Bottle

• Window

• Wood

In which festival, these kinds of lights are used?

• Buddhapurnima

• Christmas

• Diwali/kalipuja

• Halloween

What does the yellow light in the traffic light tells us?

• Go

• Stop

• Wait

If the traffic lights are not working, what shall we do?

• Keep driving

• No need to follow the traffic rules

• Follow the instruction of traffic police

• Do whatever I want to do