Sources of Light

What is an example of a natural source of light?

• Fire

• Sun

• Moon

• Stars

Name one artificial source of light commonly used in households.

• Candle

• Fireplace

• LED bulb

• Incandescent bulb

Explain the difference between transparent, translucent, and opaque objects in terms of light transmission.

• Transparent objects allow light to pass through but scatter it, translucent objects do not allow light to pass through, and opaque objects absorb light.

• Transparent objects allow light to pass through completely, translucent objects allow some light to pass through but scatter it, and opaque objects do not allow light to pass through.

• Transparent objects absorb light completely, translucent objects allow light to pass through, and opaque objects reflect light.

• Transparent objects reflect light, translucent objects absorb light, and opaque objects allow light to pass through.

How does the sun provide light to the Earth?

• By reflecting moonlight

• Through photosynthesis

• Through nuclear fusion

• Via gravitational pull

What is the purpose of a flashlight as an artificial source of light?

• To provide illumination in dark or low-light environments.

• To cook food

• To play music

• To provide warmth in cold environments

Give an example of a translucent object.

• Clear plastic

• Frosted glass

• Translucent metal

• Opaque glass

Why can't light pass through opaque objects?

• Light can't pass through opaque objects because they are made of transparent materials.

• Light can't pass through opaque objects because their atoms and molecules are tightly packed together.

• The atoms and molecules in opaque objects are loosely packed, causing light to bounce off them.

• Opaque objects absorb all light that hits them, preventing it from passing through.

How does a candle produce light?

• Combustion reaction

• Electricity

• Bioluminescence

• Reflection

Name a natural source of light that is visible during the night.

• Moon

• Campfire

• Stars

• Street lights

What happens when light hits a transparent object?

• Light reflects off the transparent object.

• Light passes through the transparent object.

• Light changes color when hitting the transparent object.

• Light absorbs into the transparent object.