Here are 100+ science riddles for you to enjoy! Looking for a science related riddles challenge? Check out our collection of chemistry riddles, physics riddles, biology riddles! They'll make you think and teach you scientific riddles things. Test yourself with this 100+ science riddles with answer. Whether you love science or just want some brain-teasing fun, these riddles are perfect. Put your thinking cap on and get ready to solve the mysteries of the universe, one science riddle at a time!

Chemical symbol for iron

84. Riddles
What is the chemical symbol for iron? 
    • The chemical symbol for iron is Fe.

R’s that keep our planet clean 

85. Riddles
What are the three R’s that keep our planet clean? 
    • The three R’s are Reduce, Reuse and Recycle. 

Name of the layer of gas riddle

90. Riddles
What is the name of the layer of gas surrounding the Earth? 
    • The name of the layer of gas surrounding the Earth is the atmosphere.