Show:
Sound
Light
Properties of Light/Sound
Miscellaneous
100
Anything that can be heard and is a form of energy.
What is Sound?
100
The bouncing back of light waves when they hit an object with a very smooth and shiny surface, like a mirror.
What is Reflection?
100

Light travels in a ______.

What is Straight Line?

100

A dark area made by an object between a ray of light and a surface.

What is a shadow?

200
Loud and constant noise.
What is Noise Pollution?
200

The primary colours of light.

What are Red, Green and Blue?

200

The speed of light?

What is 300,000 km per second?

200

The moon is an example of something that does not ____ its own light.

What is emit?

300
The ability to make things move. It is needed to start the vibrations that make sound.
What is Energy?
300

Light that is produced by things in nature, like the Sun.

What is Natural Light?

300

Sound travels in _______.

What are Waves?

300

In sound, The number of vibrations made per second

What is frequency?

400
The back and forth movements of an object. They can be powerful, weak, fast or slow.
What are Vibrations?
400

Light from things made by humans, powered by electricity or gas.

What is Artificial Light?

400

Sound is measured in ______.

What is decibels?

400

The sound from a cricket is an example of a _____ frequency sound.

What is high?

500
Vibrations that make sound.
What are Sound Waves?
500
This material lets some light pass through but light scatters in all directions.
What is a Translucent object?
500

What it is called when light passes through an object and bends.

What is reflection?

500
The special way of using sound waves to determine where objects are in an environment.

What is echolocation?