Show:
Sound
Light
Properties
Sound Travel
Volume and Pitch
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 this way.
What is a Straight Line?
100
In ______ sound travels the fastest because the molecules are close together.
What is Solids?
100
The loudness or softness of sound.
What is Volume?
200
The ability to make things move. It is needed to start the vibrations that make sound.
What is Energy?
200
When sunlight is intercepted by a drop of water in the atmosphere, and it is refracted, reflected, and then refracted once more it creates this.
What is a Rainbow?
200
Sound travels this way.
What are Waves?
200
When the sound wave bounces back it is reflected and sounds like the original sound.
What is an Echo?
200
The number of vibrations an object makes in a certain amount of time. It is measured in Hertz.
What is Frequency?
300
The back and forth movements of an object. They can be powerful, weak, fast or slow.
What are Vibrations?
300
When light rays are blocked by an opaque object, this is cast.
What is a Shadow?
300
Light is a form of this.
What is Energy?
300
Travels away from it's source in all directions.
What are Sound Waves?
300
Measured by the number of cycles the sound wave makes in a second.
What is Sound?
400
Vibrations that make sound.
What are Sound Waves?
400
This material lets some light pass through but light scatters in all directions.
What is a Translucent object?
400
The five parts of the ear.
What are Outer Ear, Ear Canal, Eardrum, Middle Ear and Inner Ear?
400
In ______ sound travels the slowest because the molecules are the farthest apart.
What are Gases?
400
The highness or lowness of a sound.
What is Pitch?
500
Loud and constant noise.
What is Noise Pollution?
500
The primary colours of light.
What are Red, Green and Blue?
500
Sound needs this in order to travel. It is the reason outer space is silent.
What is a Medium (eg, air, water or stone). Space is a vacuum and has no atoms to vibrate.
500
The process of how we hear.
Sound enters ear => vibrates eardrum => bones => cochlea => nerves => brain
500
Amplitude is a measure of how loud a sound wave is and is measures in units called ______.
What are Decibles?