When we take a metal rod with our fingers then burn to the fire, after a few seconds we fell hot, this is an example of which process of heat transfer?
conduction
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15
what is the piece of equipment that is used for navigation using Earth's magnetic field?
compass
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15
What are the magnetic materials in the earth's core that can create the earth's magnetic field?
Iron and Nickel
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15
Iron with some pin are putted like this picture. Which pin will fall first?
the closest pin to the heat sources
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15
What will happen when these magnets are brought close together?
They will repel each other.
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banana
Go to last place!
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star
Double points!
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shark
Other team loses 20 points!
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baam
Lose 5 points!
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15
A students wants to make an electromagnetic that acts like a permanent magnet, what are some easy-to-find materials that they need to?.
iron, coil wire, battery
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banana
Go to last place!
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gold
Win 50 points!
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rocket
Go to first place!
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banana
Go to last place!
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heart
Other team wins 10 points!
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star
Double points!
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gift
Win 25 points!
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banana
Go to last place!
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15
what is the equation to calculate density?
mass/volume
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15
What are two ways making stronger electromagnet:
Make a coil with more turns of wire. and Make a bigger electric current flow in the coil of wire.
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15
What are the example of magnetic materials?
Iron, Cobalt, Nickel
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15
Heat flows from _____ temperature to _____ temperature
higher to lower
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15
from the picture, which type of liquid has highest density?
honey
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15
A liquid can change state without boiling. After it rains, the puddles dry up even though the temperature is much lower than 100 C. The liquid water has become a gas called water vapour in the air. This is the process of ....