What process occurs when ice absorbs heat energy from its surroundings?
The ice melts.
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15
If you set a piece of paper on fire, what kind of change takes place?
chemical change.
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25
Sammy's toast got stuck in the toaster. As he reached for a fork to get it out, him mom stopped and asked Sammy to unplug the toaster, first. Why?
Sammy would have received a shock to his hand when the metal fork touched the wires of the toaster.
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20
Did a physical change or a chemical change occur to the crayon in the picture?
physical change
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trap
No points!
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fairy
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fairy
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banana
Go to last place!
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15
True or False: Magnets attract all metals.
False. Magnets attract some metals such as iron, nickel, and cobalt.
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20
How many wires would be needed to make this a closed circuit?
3
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lifesaver
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gold
Win 50 points!
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rocket
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banana
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25
When Joshua created this table, he forgot to put labels on each column. What should he label Column A and Column B?
Column A conductors and Column B are insulators.
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20
What form of energy is cause by moving electrons?
electricity
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20
Anthony's dad wired new lights for his bedroom. When he thought everything was connected correctly, he turned on the switch and nothing happened. Is the problem from a closed or an open circuit?
It's because of an open circuit so electrons cannot flow along the path.
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25
Why is current electricity a better source for use in our homes than static electricity?
You need a steady flow of electricity to run things, and you can turn off the electricity when not needed.
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25
What part of an atom always has a negative charge?
an electron
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banana
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star
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rocket
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lifesaver
Give 5 points!
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lifesaver
Give 15 points!
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star
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fairy
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thief
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15
Hair standing straight up after removing a wool hat is an example of ______________.