Brain Teasers
Can't be Seen
I am a very busy thing.
I travel in the sky.
Unfortunately to you, I cannot be seen.
I can be low or high.
Although I travel through walls and screens.
If you lose me, you'll like let out a big sigh.
I travel in the sky.
Unfortunately to you, I cannot be seen.
I can be low or high.
Although I travel through walls and screens.
If you lose me, you'll like let out a big sigh.
Hint
We're surrounded by them.Answer
Signals. As in cell phone, WiFi, or radio signals!Hide Hint Show Hint Hide Answer Show Answer
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