Light and Sound

Front

What is sound?

Back

Sound is a type of energy that is produced when objects vibrate. It travels in waves and can be heard when it reaches our ears.

Front

What does it mean for a surface to reflect light?

Back

When a surface reflects light, it bounces the light back instead of absorbing it. Smooth surfaces, like mirrors, reflect a lot of light.

Front

What is the difference between transparent and opaque materials?

Back

Transparent materials allow light to pass through them clearly (like clean water), while opaque materials do not allow light to pass through (like a wooden fence).

Front

What happens to light when it hits a rough surface?

Back

When light hits a rough surface, it scatters in many directions instead of reflecting in a straight line.

Front

What is the role of vibrations in producing sound?

Back

Vibrations are essential for producing sound; without them, no sound can be created.

Front

What type of waves do light and sound travel in?

Back

Light travels in straight lines, while sound travels in waves that can be straight or curved depending on the medium.

Front

What is an example of a material that absorbs light?

Back

A black surface absorbs most of the light that hits it, making it a good example of a material that absorbs light.

Front

Why do we use shiny surfaces to keep things cool?

Back

Shiny surfaces reflect sunlight, which helps keep things cool by preventing heat absorption.

Front

What is the definition of a medium in the context of sound?

Back

A medium is a substance (like air, water, or solids) through which sound waves travel.

Front

What is the difference between light and sound waves?

Back

Light waves are electromagnetic waves that can travel through a vacuum, while sound waves are mechanical waves that require a medium to travel.