Energy IV – Basic 1 Basic Science Lesson Note (First Term)

Topic: Light Energy Sources

What is Light Energy?

Light energy is what makes things bright so we can see them. Without light, everything would be dark.

Natural Sources of Light

These are sources of light that come from nature. God made them for us.

The Sun:

• Our biggest source of light
• Shines during the day
• Makes everything bright and warm
• Helps plants grow

The Moon:

• Gives us light at night
• Not as bright as the sun
• Changes its shape during the month
• Reflects light from the sun

Stars:

• Small lights we see at night
• Very far away from us
• Twinkle in the dark sky
• The sun is also a star

Lightning:

• Bright light during storms
• Very quick flashes
• Can be dangerous
• We see it before we hear thunder

Artificial Sources of Light

These are sources of light that people make to help us see in the dark.

Electric Lights:

• Light bulbs in our homes
• Fluorescent lights in schools
• Street lights on roads
• Table lamps for reading

Candles:

• Made of wax with a string
• Adults light them with matches
• Give soft, warm light
• Used during power cuts

Torches:

• Use batteries for power
• Good for camping
• Help us see in dark places
• Easy to carry around

Fire:

• Burning wood gives light
• Campfires and fireplaces
• Very hot and bright
• Adults must handle fire

Class Exercise

1. What is our biggest source of natural light?
2. Name two artificial sources of light.
3. Which natural light do we see at night?
4. Complete: _____ lights are made by people, while _____ lights come from nature.