What are opague , transparent and translucent objects?
Opague objects do not let light pass through, Transparent let light pass through and Translucent lets some light pass through depending on the wavelength.
100
What is sound?
Sound is made of waves of vibrations passing through a medium
100
What is the human ear made of?
The human ear is made of three primary regions: the outer, middle and inner ear.
100
What are the three primary colors?
Red, Blue and Green
100
what is an organisms hearing range?
An organism’s hearing range is the range of frequencies that it is able to detect.
200
What are plane, concave and convex mirrors?
Plane mirrors are flat. Concave are bent towards the light. Convex are bent away from the light.
200
When is sound created?
Sound is created when objects vibrate and move molecules.
200
What are the parts of the outer, inner and middle ear?
Hearing range frequencies usually relate to what an organism might need it for in the wild.
300
What is the incident and reflected angle?
The incident angle is the angle the light come hits the mirror and the reflected angle is the angle that it is reflected and leaves the mirror.
300
Where does sound travel very fast?
Sound travels faster in dense objects
300
What is the loudness of sound measured in?
The loudness of sound is measured in decibels
300
What are light filters used for?
They are used to absorb some wave lengths of light and let others through.
300
How do music instruments create sound?
Musical instruments create sound by creating vibrations.
400
What is the law of reflection?
In a mirror, the incident and reflected angles are the same.
400
Why does sound travel faster in denser objects?
Sound travels faster in dense objects because the molecules are close together so vibrations pass through more easily.
400
What are hearing aids used for?
They detect sounds and amplify them into the ear canal.
400
What is transmission?
Transmission is a process when light filters absorb some wave lengths of light and do let others pass through.
400
If you have a large instrument what will you have?
A large wave length
500
What can objects that block all of light do?
They can absorb the light reflect it or do a combination of both.
500
How fast does air travel in wood and water?
Water (1500 metres per second)
Wood (3850 metres per second)
500
How does the ear work?
1.Sound waves are collected by the ear pinna.
2.The waves travel along the ear canal.
3.The waves make the ear drum vibrate
4.The small bones amplify the vibrations.
5.The cochlea turns these into electrical signals.
6.The auditory nerve
takes the signals
to the brain