light travel in straight line

Front

What does it mean when we say 'light travels in a straight line'?

Back

It means that light moves in a straight path without bending or changing direction unless it hits an object.

Front

What is a transparent material?

Back

A transparent material is one that allows light to pass through so that objects behind can be seen clearly.

Front

What is an example of a transparent material?

Back

Glass is an example of a transparent material.

Front

What does 'opaque' mean?

Back

Opaque means that a material does not allow light to pass through it.

Front

What is silvering in relation to light?

Back

Silvering is a process where a silver-colored material is used to coat glass to make it reflective.

Front

What happens to light rays from a lighthouse?

Back

Light rays from a lighthouse travel in straight lines to illuminate the surrounding area.

Front

How does sunlight behave when it passes through a cave?

Back

Sunlight travels in a straight line until it hits an object, like the walls of the cave.

Front

What can we conclude about light based on a spotlight on a stage?

Back

We can conclude that light travels in a straight line to illuminate specific areas.

Front

What happens to light in a dark room?

Back

In a dark room, there is no light source, so light cannot travel.

Front

What is the speed of light?

Back

Light travels very fast, but in this context, we focus on its straight-line travel.