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Q 1/17
Score 0
What is a circuit with no gaps or breaks in it?
30
open circuit
sound energy
mechanical energy
closed circuit
Q 2/17
Score 0
Choose the magnetic materials.
30
Paper and Cloth
Steel and Iron
Plastic and Iron
Wood and Silver
17 questions
Q.
What is a circuit with no gaps or breaks in it?
1
30 sec
Q.
Choose the magnetic materials.
2
30 sec
Q.
Which is an example of a temporary magnet?
3
30 sec
Q.
What is true about electromagnets?
4
30 sec
Q.
Lightning striking a tree during a storm would be an example of
5
30 sec
Q.
The purpose of plastic coating on electrical cords is to
6
30 sec
Q.
Which of these would act as an electrical conductor?
7
30 sec
Q.
Each picture shows a light bulb connected to a battery. Which bulb will light?
8
30 sec
Q.
After scooting across the carpet in her slippers, Alexis touches the metal doorknob and receives a shock. This is an example of
9
30 sec
Q.
What happens when you disconnect electromagnets from an energy source?
10
30 sec
Q.
The following characteristics describe a magnet: Permanent, strength cannot be changed, does not need electricity to function. Identify the type of magnet below.
11
30 sec
Q.
A simple electromagnet can be constructed using a battery, a piece of insulated wire, and some kind of iron core, such as a nail. When the current is turned off in an electromagnet, the ___________.
12
30 sec
Q.
Adding a second battery to an electromagnet will __________.
13
30 sec
Q.
Electricity in circuits can produce light, heat, sound, and magnetic effects. Electrical circuits require a complete loop through which the electrical current can pass. Which object would you attach to the wires in this picture to enable the bulb to light up.
14
30 sec
Q.
In the electric circuit shown, a student wants to replace Wire 1 with a different conductor. Which of the following materials could be used in place of Wire 1 to make the bulb light?
15
30 sec
Q.
A company uses an electromagnet instead of a bar magnet to lift a heavy piece of machinery because an electromagnet
16
30 sec
Q.
As two magnets move further and further away from each other, the strength of attraction:
