# Science For 7-8 Year Olds

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Questions: 5 | Attempts: 4,146

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It’s never too early to learn about the wonders of science, and in this quiz geared for children around seven years old, we’ll be running through some basic questions that will give your child a great foundation of scientific knowledge.

• 1.

### What is 0 degrees Centigrade in Fahrenheit?

• A.

100 degrees Fahrenheit

• B.

32 degrees Fahrenheit

• C.

1 degree Fahrenheit

• D.

Minus 10 degrees Fahrenheit

B. 32 degrees Fahrenheit
Explanation
0 degrees Centigrade is equivalent to 32 degrees Fahrenheit. This is because the freezing point of water is 0 degrees Centigrade and 32 degrees Fahrenheit. The two temperature scales have different starting points and different intervals, but they intersect at this specific temperature.

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• 2.

### Two magnets that are held close repel each other if the poles facing each other are:

• A.

Positive and positive

• B.

Negative and negative

• C.

Either answer A or B are correct

• D.

Negative and positive

• E.

None of the above are correct

C. Either answer A or B are correct
Explanation
The explanation for the given answer is that two magnets held close to each other will repel each other if the poles facing each other are either positive and positive or negative and negative. This is because like poles repel each other, while opposite poles attract. Therefore, if the poles facing each other are the same (either positive or negative), the magnets will repel each other.

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• 3.

### Which is harder than the other?

• A.

Gold is harder than iron

• B.

Iron is harder than gold

B. Iron is harder than gold
Explanation
In terms of hardness, iron is generally considered harder than gold. Hardness is a measure of a material's resistance to scratching or indentation. Iron has a higher hardness rating on the Mohs scale compared to gold. Iron's hardness is attributed to its crystal structure and the presence of carbon impurities, which make it more resistant to deformation. Gold, on the other hand, is a relatively soft metal and can be easily scratched or dented. Therefore, iron is harder than gold.

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• 4.

### Which is NOT a name of a cloud?

• A.

Nimbus

• B.

Cumulus

• C.

Cirrus

• D.

Columbus

D. Columbus
Explanation
The name "Columbus" does not correspond to any type of cloud. Nimbus, Cumulus, and Cirrus are all actual cloud names used to describe different types of clouds. However, "Columbus" does not fit into this category and is not recognized as a cloud name.

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• 5.

### Which of these does not conduct electricity?

• A.

Iron

• B.

Copper

• C.

Wood

• D.

Silver

C. Wood
Explanation
Wood does not conduct electricity because it is an insulator. Unlike metals such as iron, copper, and silver, wood does not have free electrons that can move and carry electric charge. The structure of wood is made up of tightly bound atoms and molecules, which restricts the flow of electric current. Therefore, wood is not a conductor of electricity.

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• Current Version
• Mar 21, 2022
Quiz Edited by
ProProfs Editorial Team
• Mar 18, 2009
Quiz Created by
Tpp

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