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!

Updated: 02-01-2026

Name of the layer of gas riddle

82. 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. 

R’s that keep our planet clean 

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