Electricity
3 years ago
vlofton
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• Question 1
120 seconds
Q. A circuit made of wires, a lamp, a switch, and a cell is shown at the right. What change is needed for the lamp to glow?
The switch needs to be opened.
The switch needs to be closed.
The cell needs an insulator.
The wire needs to be connected to the bottom of the cell.
• Question 2
120 seconds
Q. Which statement best explains why the lamp does not glow?
Circuit 1 is an open circuit.
Circuit 1 is a closed circuit.
The negative terminal of Circuit 1 is connected to the cell.
The positive terminal of Circuit 1 is connected to the cell.
• Question 3
120 seconds
Q. Which property of wood makes it a good material for the handle on a cooking tool?
Wood is a natural material.
Wood is unaffected by metal.
Wood conducts heat well.
Wood does not conduct electricity well.
• Question 4
120 seconds
Q. Mary-Alice likes to bring her coffee to work each morning.  However, she wonders what the best cup to bring would be if she wants her coffee to stay warm.  Which of the following materials would keep Mary-Alice’s coffee warm the longest?
paper
Styrofoam
plastic
glass
• Question 5
120 seconds
Q. Which material is the best conductor of heat?
aluminum
glass
wood
plastic
• Question 6
120 seconds
Q. Which of the following items could not be used to create a closed circuit?
battery, light bulb
battery, wires, buzzer
battery, light bulb, wires
battery, light bulb, buzzer, wire
• Question 7
120 seconds
Q. The wires connecting the battery and the light bulb create a closed circuit. What would happen if one of the wires were cut?
The light would go out.
The light bulb would crack.
The wire would become hot.
The battery would lose its crack.
• Question 8
120 seconds
Q. What roofing material would conduct the least amount of heat?
copper
aluminum
cedar wood
steel
• Question 9
120 seconds
Q. Why is an insulator used in a circuit?
An insulator helps keep the electric charges inside the pathway.
An insulator transforms electrical energy into other forms of energy.
An insulator provides the pathway electric current moves through.
An insulator provides the energy to pump electric charges through the circuit.

• Question 10
120 seconds
Q. Which statement best describes the circuit in the diagram?
It is a series circuit.
It is a parallel circuit.
There are 2 paths.
The circuit is opened.
• Question 11
120 seconds
Q. Which statement best describes the circuit in the diagram?
If one light goes out the other light will also go out because it is a series circuit.
There is only 1 path.
If one light goes out the other light will stay on because it is a parallel circuit.
The circuit is opened.
• Question 12
120 seconds
Q. Which poles make the magnets in the picture possible?
north and south
south and south
north and north
up and down
• Question 13
120 seconds
Q. True or False
If you hear thunder, lightning is close enough to strike you.