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15
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Complete.We also find naturally magnetic pieces of magnetitte called........................
lodestone
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15
×
True or false.When we close a circuit , the object becomes an electromagnet
true
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×
seesaw
Swap points!
Oops!
×
seesaw
Swap points!
Okay!
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fairy
Take points!
5
10
15
20
25
×
baam
Lose 20 points!
Oops!
15
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Magnets can also be .................... or .........................
permanent and induced
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15
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Many .............................................. like blenders use magnets to convert electricity.
home appliances
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15
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What is the name of the trains that are made of magnetic levitation?
maglev trains
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15
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True or false. The compass can tell us about the weather
false
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15
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True or false : The earth has a core of solid iron that acts like a gigant magnet.
false. core of liquid iron
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15
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Complete : All magnets has two ...................................
opposite poles
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15
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True or false.All magnetic materials are metallic.
true
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15
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True or false.Opposite poles repel each other
false
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eraser
Reset score!
Oops!
×
seesaw
Swap points!
Okay!
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rocket
Go to first place!
Okay!
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lifesaver
Give 20 points!
Oops!
15
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Where did they discover the first natural magnets ?
Ancient Greece and China
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lifesaver
Give 25 points!
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gold
Win 50 points!
Okay!
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rocket
Go to first place!
Okay!
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banana
Go to last place!
Oops!
15
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Complete : Magnets attract certain metals such as ................................. , ............................. and ................
iron, nikel and cobalt
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15
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Label the two types of magnets
natural and artificial
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