Show:
Waves: Lesson 1
Waves : Lesson 2
Sound: Lesson 1 and 2
Sound: Lesson 4
Electromagnectic Spectrum
100
What is a wave???
A disturbance of energy.
100
What is frequency measured in???
Hertz.
100
What is the most common medium for sound???
Air
100
What is the pinna like?
A funnel
100
What are the colors of the rainbow?
Red, orange, yellow, green, blue, indigo, and violet.
200
What are the three mediums of a wave?
Solid, liquid, and gas.
200
Which travels faster, light or sound????
Light.
200
What is sound measured in?
Decibels
200
What are the three major parts of the ear?
Outer ear, middle ear, inner ear
200
What is the most powerful wave?
Gamma rays
300
What is the highest point of a wave??
A crest.
300
In longitudinal waves, how do you measure wavelength???
From compression to compression.
300
How does sound begin???
A vibration
300
What is the order of the three bones in the middle ear?
Hammer, anvil, and stirrup
300
What kind of wave is in RADAR?
Microwaves
400
Does a surface wave have a trough???
No.
400
How would you write, 100 waves per second???
100hz.
400
True or false. Sound waves can't diffract.
False
400
What part of the ear has tiny hairs?
The cochlea
400
True or false. Ultraviolet rays are always bad.
False
500
In science, what is the definition of energy???
The ability to do work.
500
What is the height of a wave??
The amplitude.
500
Does sound travel faster in warm air or cold air?
Warm air
500
Where does sound travel through to get to the brain?
The auditory nerve
500
Can X-Rays travel through lead?
No