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Science and Math Riddles

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Science and Math Riddles

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About this activity

Riddles about math and science!

Created by

Nicole Babbitt
Nicole Babbitt
United States

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Science and Math Riddles
 

Science and Math RiddlesOnline version

Riddles about math and science!

by Nicole Babbitt
1

I can run but I have no legs. I can freeze into a hard rock, but I am not a stone. I can turn into a floating cloud, but I have no wings. What am I?

Hints

It is a key part of rain and clouds.

It changes from liquid to solid to gas.

It moves around without feet.

2

You can never see me, but I always keep you grounded. I am the invisible force that pulls things down. Without me, you’d float right out of your classroom seat! What am I?

Hints

It’s a fundamental force that attracts two bodies.

It never disappears, it just gets weaker with distance.

It keeps everything on the ground.

3

I only exist when there is light, but I am made entirely of darkness. I stretch out long in the evening, but I am very short at noon. What am I?

Hints

Think about what appears on the ground or walls when light is present.

It changes with the sun's position.

It follows you when there is light.

4

I am a big word that plants know very well. I take sunlight, water, and air, and turn them into food. I am the reason leaves are green. What process am I?

Hints

It gives plants their green color through pigments.

It uses light energy to make sugar.

It happens in the chloroplasts of plant cells.

5

I am the thickest layer of the Earth, right below the crust. I am made of solid and melting rock, and I slowly move like a thick soup. What am I?

Hints

Convection in this layer helps drive plate tectonics.

It behaves plastically over long timescales.

It lies between the crust and the core.

6

I have exactly three sides and three angles. Sometimes my angles are "right," but I am never "wrong." Sometimes I have an "acute" little angle! What shape am I?

Hints

Sum of its interior angles is 180 degrees.

It can be equilateral, isosceles, or scalene.

It is a polygon with three corners.

7

I am a number that represents a part of a whole. I always have a line drawn right through my middle. I have a numerator sitting on top, and a denominator resting on the bottom. What am I?

Hints

The top number is the numerator, the bottom is the denominator.

The line is called a bar or vinculum.

It represents parts of a whole divided into equal parts.

8

If you add me to a number, the number stays exactly the same. If you multiply me by a number, the answer becomes me! On my own, I am nothing, but put me next to a 1 and I make it a 10. What number am I?

Hints

Placed next to a 1, it can form a 10 in some contexts.

It is the additive identity.

It represents nothing.

9

I am a whole number that can be divided evenly by myself. But here is my super secret: I only have two factors, 1 and myself. That makes me the only even prime number in the universe! What number am I?

Hints

Only two factors: 1 and itself.

It is even.

It is the smallest prime number.

10

I am a way to measure the distance all the way around the outside of a shape. To find me, you have to add up the lengths of every single side. What math word am I?

Hints

Opposite of area in many problems.

You sum all sides to get it.

It measures the boundary of a shape.

 
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