Light
Which colours of the rainbow combine to make white light? eg: red and blue
All colours!
Draw on the board what a magnetic field looks like
points to south
What is newtons 3rd law
force pairs
Can we hear sound in outer space?
No
What analog can we use to model the bahaviour of light when it hits a barrier?
Water Waves
Draw on the board, the magnetic field aroudn the earth
points to the North Pole
What will happen if an astronaut pushed a ball in space if there was no wall to contain it?
it would go forever
What causes an echo?
sound waves bounching off a surface
What kind of energy does something have when i hold it in the air
Potential energy
What is the word for the spreading out of light when it passes through a slit?
Diffraction
Is it possible to have just one side of a magnet?
No
What would happen of I had a ramp on a stationary car and I rolled a ball down the ramp, which law causes this to happen?
the car woudl move, 3rd law
What is another word for volume of sound
Amplitude
Which colour has a longer wavelength red or blue?
red
What is produced when a magnet is moved through a coil of wire?
An electric current!
according to newtons 2nd law is mass proportional to acceleration. Proportional means that if one number changes by a certain percentage the other number will also change by the same percentage.
No, mass and acceleration are not proportional. If force is constant and acceleration increases, the mass must have decreased.
What is another word for pitch of sound?
frequency
Which type of light has a higher energy, ultraviolet light or microwaves?
ultraviolet light
Explain why we are able to magnetize a needle using a permanent magnet.
Because there are a bunch of tiny magnets making of the material and when we rub the magnet against them they all align in direction.
describe how all three of newtons laws apply to launching a rocket.
1 - we must apply a force to the rocket to make it move
2 - that force is eqial to the mass of the rocket times the amount that it must accelerate
3 - the rocket pushes down to go up
Why is the range of volume and pitch that humans can produce and hear sound limited?
Because our vocal chords vibrate to produce sound and they can only vibrate so fast or slow