Show:
Energy and Waves
The Ear
Electromagnetic Spectrum
Ohm's Law
Electric Circuits
100
If you measure between two crests, you are the measuring the ... ?
Wave length
100
What sort of energy does the ear sense?
Sound energy
100
What is the only type of electromagnetic radiation that we can see?
Visible light
100
What shape does Ohm's Law use to help us remember it?
A triangle
100
What is the name of the negatively charged particles that travel through a circuit to make electricity?
Electrons
200
What is the opposite of a longitudinal wave?
Transverse wave
200
What part of the ear connects to the nose?
Eustachian tube
200
Do microwaves have a long or short wavelength?
Long
200
What is the symbol (NOT the unit) for current?
I
200
What is the symbol for a light bulb?
(On white board)
300
Is a sound wave a transverse wave or a longitudinal wave?
Longitudinal wave
300
Put the parts of the ear in the order they receive vibrations? - cochlea - pinna - eardrum
1) Pinna 2) Eardrum 3) Cochlea
300
What has a longer wavelength, radio waves or UV rays?
Radio waves (not dangerous)
300
What is the unit for ohms (resistance)?
Ω
300
What is the symbol for an ammeter?
On board.
400
What is the opposite of a rarefaction?
A compression
400
Which part of the ear amplifies the vibrations?
Eardrum
400
How do you measure wavelength?
Between the crests
400
What is the equation to find resistance?
R: V / I
400
Draw a series circuit with a: - battery - globe - voltmeter
On board
500
Turn this longitudinal wave into a transverse wave (remember what crests match up with, and what troughs match up with).
See powerpoint
500
Australian scientists invented the Bionic Ear. What two body parts do the wires need to be connected to? (Be specific in your answer)
1) The cochlea 2) The brain
500
Does a high frequency mean a SHORT wavelength or a LONG wavelength?
Short
500
If the current is 10A and the resistance is 4Ω, what is the voltage? (Make sure you include units!!)
40V
500
Draw a parallel circuit with: - a battery - two globes
On board