Energy
Electric Charges
Circuits
Vocab Words
Can you apply it?
100
Energy transformation occur regularly in our lives as we actively or passively make use of energies and transform energies. The toaster illustrated here plugs into the wall and turns a piece of bread into toast.
Which of the following best explains how it works?
electrical energy into heat energy
100
For an electrically charged object to repel another object, what must happen?
Have charges that are the same/similar
100
A circuit that is not conducting an electric current
open circuit
100
An electrical charge caused by friction
static electricity
100
Student 1: Energy is used to stop a ball.
Student 2: Energy is used to turn a ball.
Student 3: Energy is used to allow a ball to move in a straight line.
Student 4: Energy is used to cause a ball to go faster.
Which student activity will least likely indicate a change in motion?
student 3
200
Which energy transformations occurs when a lamp that is plugged into a wall socket is functioning correctly?
electrical energy to light energy
200
The charge of an object depends on the relative numbers of electrons and protons. For objects to attract each other, what must be true of them?
the objects have different charges
200
Insulator do not carry electrons easily. An image of four objects is provided.
Which of these would be the best insulator of electricity?
rubber band
200
Material that allows heat or electricity to move easily through it
conductor
200
An incomplete circuit is provided.
To complete the circuit, a wire should be placed between which two points?
point A to point D
300
Energy that causes a change in temperature between two materials
Heat/Thermal Energy
300
A positively charged object is sitting on the floor. An image is provided.
Which of the following will most likely occur when a negatively charged object is brought near this positively charged object?
the objects will attract each other
300
A battery, bulb, wires and a switch have been assembled, as shown in the illustration. The bulb does not light.
What change would make the bulb light?
close the switch
300
Mechanical energy that travels as waves through air or water that sends vibrations
sound energy
300
The illustration shows a circuit with two batteries, two bulbs, and some wires. Will the bulb light up in this circuit? Explain your answer.
No, the batteries are not connected correctly. The charges should be placed next to each other with opposite charges touching
400
the type of energy created when the toy cars wheels are rubbed repeatedly on the carpet
heat/thermal energy (when you rub the wheel on the carpet over and over again the wheel will feel hot to the touch)
400
The cats hair is standing up because....
the balloon and the hair has opposite charges
400
This type of circuit
parallel circuit
400
to bend or throw back (waves of light, sound, or heat)
reflect
400
Jimmy has two marbles of the same size and weight. The green marble is still and the blue marble is rolling. Explain what will happen if the blue marble hits the green marble?
The green marble will move because the energy from the blue marble is transferred to the green marble.
500
There is a change in motion in this picture of a volleyball game
girl A hits the ball to girl B (the ball changes direction)
girl B hits the ball over the net and the defender blocks the ball (the ball stops changes direction again)
500
The table provided describes four different scenarios involving charged and uncharged objects.
In how many scenarios will the two objects be attracted?
two scenarios (the first and the last)
500
conductor
500
occurs when something is vibrated quickly to produce the sound.
high pitch
500
What would happen to the light from your flashlight if you shine it straight at a regular mirror?
the light will bounce right back to the flashlight