I can be heavy or light, but you cannot see me in flight. What am I?
Category: Science · Difficulty: medium
Hint: I fill up spaces, but I'm not a solid.
Answer
Air
Explanation
Air has weight (it can be heavy or light) but is invisible and cannot be seen flying.
This is a medium science riddle — a moderate challenge for most people. The answer is Air.
More Science riddles
- What two elements make water?
- What is the sugar molecule that gives sweetness to fruits?
- What do we call the unit of measurement for time that is equal to 60 seconds?
- What natural phenomenon causes rainbows to appear?
- I take what you throw away and turn it into something useful. What am I?
- I spin around the sun with a merry little dance. My friends and I are many, but I’m the only one with rings…
- What can shake but never makes a sound?
- I am a sweet substance made from plants, but I am not sugar. What am I?