Light (STAAR released questions)

Front

What is light?

Back

Light is a form of energy that travels in waves and can be seen by the human eye.

Front

How does light travel?

Back

Light travels in straight lines.

Front

What happens to light when it hits a mirror?

Back

Light reflects off the surface of the mirror.

Front

What is refraction?

Back

Refraction is the bending of light as it passes from one medium to another, like from air to water.

Front

What is reflection?

Back

Reflection is when light bounces off a surface.

Front

What is the speed of light?

Back

The speed of light in a vacuum is approximately 299,792 kilometers per second.

Front

What is a laser?

Back

A laser is a device that produces a focused beam of light.

Front

What is the difference between transparent, translucent, and opaque materials?

Back

Transparent materials allow light to pass through clearly, translucent materials allow some light to pass but not clearly, and opaque materials do not allow light to pass through.

Front

What is the role of light in photosynthesis?

Back

Light is essential for photosynthesis, as it provides the energy plants need to convert carbon dioxide and water into glucose and oxygen.

Front

What is a shadow?

Back

A shadow is created when an object blocks light from reaching a surface.