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15
×
YES or NO: The strength of an electromagnet cannot be increased.
NO
Oops!
Check
Okay!
Check
15
×
A magnet is _________.
D.an object that attracts or pulls certain materials like iron and steel
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Okay!
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15
×
Which part of electromagnet supplies electric current?
A. battery
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15
×
YES or NO: The electric current has nothing to do with the strength of an electromagnet.
NO
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Check
Okay!
Check
15
×
YES or NO: The coils should loop in one direction only.
YES
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Check
Okay!
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15
×
Which is an example of a temporary magnet?
B. electromagnet
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Okay!
Check
×
seesaw
Swap points!
Oops!
×
gold
Win 50 points!
Okay!
×
shark
Other team loses 20 points!
Okay!
×
banana
Go to last place!
Oops!
×
boom
Lose 50 points!
Oops!
×
star
Double points!
Okay!
×
shark
Other team loses 5 points!
Okay!
×
thief
Give points!
5
10
15
20
25
15
×
Which from the following materials can be used as a core in making an electromagnet?
C. screw driver
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Check
Okay!
Check
×
seesaw
Swap points!
Oops!
×
shark
Other team loses 25 points!
Okay!
×
gift
Win 25 points!
Okay!
×
baam
Lose 20 points!
Oops!
×
eraser
Reset score!
Oops!
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fairy
Take points!
5
10
15
20
25
×
gift
Win 15 points!
Okay!
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lifesaver
Give 25 points!
Oops!
15
×
YES or NO: Electromagnet will function by letting electricity flow through it.
YES
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Check
Okay!
Check
15
×
To strengthen an electromagnet, there is a need to _______.
B. increase the number of turns in a coil
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Check
15
×
YES OR NO: In constructing an electromagnet, we can use any material as core.
NO
Oops!
Check
Okay!
Check
×
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