Light

What are luminous objects?

• Objects that emit their own light.

• Objects that reflect light.

• Objects that are illuminated.

• Objects that are not visable.

Which of the following is an example of a natural light source?

• Light bulb

• TV set

• Torch

• Sun

What are objects that are not light sources called? (There is more than one correct answer.)

• Luminous objects

• Reflectors

• Illuminated objects

• Invisible objects

How do we see objects that are not light sources?

• They emit their own light.

• They reflect the light that falls upon them.

• They absorb the light that falls upon them.

• They generate their own light rays.

Why do we wear sunglasses during sunny days?

• To protect our eyes from harmful rays.

• To make objects appear brighter.

• To make objects appear darker.

• To enhance our vision.

Which of the following is an example of an illuminated object?

• Light bulb

• Table

• TV set

• Sun

What happens when light comes from a light source and hits an object?

• The object absorbs the light.

• The object reflects the light.

• The object emits its own light.

• The object becomes invisible.

How does light travels?

• Light travels in circles.

• Light does not travel.

• Light travels in straight lines.

• Light travels in waves.

When should we wear protective eye shields?

• During sunny days.

• When reading a book.

• While welding.

• At night

What is wrong with this picture?

• There is nothing wrong.

• The arrow is pointing in the wrong direction.