Sources and Phenomena of Light

The video explains the concept of light sources, highlighting the sun as a primary source during the day. It discusses the need for artificial light sources like bulbs and flashlights at night. Natural sources such as lightning and stars are also covered, with a clarification that the moon reflects sunlight and is not a light source itself. The video concludes with a call to action to subscribe.

Why do we need other sources of light at night?

• Because the sun is too far away

• Because the moon is too bright

• Because the sun is not visible at night

• Because stars are not enough

Which of the following is NOT an artificial source of light?

• Flashlights

• Headlights

• Light bulbs

• The moon

Which of these produces light on its own?

• Mirror

• Television

• Water

• Glass

What natural phenomenon causes bright flashes of light during a thunderstorm?

• Stars

• Lightning

• The moon

• Fire

Which of the following is a source of light in the night sky?

• Trees

• Clouds

• Mountains

• Stars

Why is the moon not considered a source of light?

• It is only visible during the day

• It is not bright enough

• It reflects the sun's light

• It is too far away