Light

The video tutorial explains the concept of light sources, highlighting various examples such as bulbs, candles, and the sun. It emphasizes the importance of light for vision and discusses different light sources used at night, like torches and lamps. The sun is identified as the largest and most significant light source, providing essential illumination during the day.

What is an example of a light source?

• A mirror

• A bulb

• A book

• A table

Why can't we see anything in the absence of light?

• Because it is too noisy

• Because our eyes are closed

• Because light is needed to reflect off objects

• Because objects disappear

Which of the following is NOT a light source used at night?

• Fairground lights

• Lamp

• Torch

• Curtains

What is the largest light source that cannot be turned off?

• The sun

• A candle

• A flashlight

• A streetlight

How does the sun help us during the day?

• By lighting up our surroundings

• By changing colors

• By making noise

• By providing heat