U1: Waves
U2: Motion
U3: Forces and Newton's Laws
U4: Work and Energy
U5: Electricity
100
This is the difference between a mechanical wave and an electromagnetic wave.
What is mechanical waves require a medium to travel and cannot travel in outer space? Electromagnetic waves (all light waves) can travel through no medium.
100
This is the difference between distance and displacement.
What is distance is the entire path traveled while displacement is the distance from start to finish in a straight line with a direction.
100
This is the support force that acts in an upward direction when objects sit on a stable surface.
What is the normal force?
100
This SI unit is used to measure work and energy.
What is Joules (J)?
100
These are the appropriate charges on protons and electrons.
What is protons are POSITIVE and electrons are NEGATIVE.
200
This is the way you change the speed of a wave.
What is change the medium?
200
These are the SI units for the following: 1. distance; 2. speed; and 3. acceleration
What is 1. meters (m); 2. meters per second (m/s); 3. meters per second per second (m/s/s or m/s2)
200
This is the net force when forces are balanced.
What is zero?
200
This has to be true for work to be done on an object.
What is the force applied has to be in the same direction as the motion of the object?
200
This is the force responsible for attraction and repulsion of electrons and protons.
What is the electric force?
300
This is how you measure wavelength on a transverse wave.
What is find the distance from crest to crest or trough to trough?
300
These are two ways that an object can accelerate.
What is change speed or change direction? Remember: acceleration happens when velocity changes.
300
This is the SI unit for force.
What is Newtons (N)?
300
Friction causes mechanical energy to be converted into this.
What is thermal energy?
300
This is the difference between a conductor and an insulator.
What is conductors allow electrons to flow through them easily (like wires) and insulators prevent electrons from flowing as easily (like plastic, rubber, and wood)?
400
This is the difference between a transverse wave and a longitudinal wave.
What is how the particles move? In transverse waves the particles move at right angles to the direction of the wave travel (up and down). In longitudinal waves, the particles move in the same direction as the wave travels (side to side). Remember that transverse waves have crests and troughs. Longitudinal waves have compressions and rarefactions.
400
This is the difference between speed and velocity.
What is velocity requires a direction? Otherwise, speed and velocity are the same: measuring how long it takes for an object to move a certain distance (distance per time).
400
This is how you get an object to move at a constant speed.
What is make sure that the forces acting on the object are balanced? Your push should be equal to the force of friction.
400
If the initial KE of a ball as it is kicked is 100 J, what is the maximum GPE of the ball at its highest point, just before it comes back down? Ignore air resistance and friction.
What is 100 J of GPE? (Mechanical energy is conserved, following the law of conservation of energy)
400
This is what happens when you remove a light bulb from a series circuit.
What is the other light bulbs go out? When bulbs are connected in series and one is removed, the circuit is opened and current cannot flow in an open circuit.
500
This is the difference between reflection and refraction.
What is reflection is the bouncing back of waves when they hit a surface and refraction is the bending of waves as they enter a new medium. Remember: all waves can be reflected and refracted.
500
This is the acceleration when an object is moving at a constant velocity.
What is zero, no acceleration?
500
This is what will happen when two balls of different masses (like a golf ball and a ping pong ball) hit each other. (Consider all of Newton's 3 laws)
What is...when the ping pong hits the golf ball, the golf ball hits the ping pong ball with the same amount of force in the opposite direction? (3rd law). What is...the ping pong ball will accelerate more because it has less mass (2nd law). What is...the balls will eventually come to a stop because friction acts as an unbalanced force, so the objects will slow down (2nd law). If there was no friction, the balls would continue to move apart at a constant speed (1st law)
500
This is what happens to mechanical energy when work is done.
What is mechanical energy increases? If you're applying a force across a distance (doing work), you are accelerating the object, which is changing its speed. When speed increases, kinetic energy increases. Faster objects have more kinetic energy.
500
This is how the law of conservation of energy applies to an electric circuit with a light bulb.
What is electric potential energy is stored in the battery, converted to kinetic energy (of motion) as the electrons move around the circuit, and then converted to thermal energy (heat) and light energy (waves!) in the light bulb.
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