What do you know off the top of your head?
What do you know off the top of your head?
Put your brain into gear, answer these twenty questions, and remember, no cheating!
Put your brain into gear, answer these twenty questions, and remember, no cheating!
You are nearly 100% empty space.
What is it called when you sleep during the night?
Is it true that you will never actually touch anything because of an atom's magnetic field?
What is the fastest growing plant?
What animal(s) can survive in space?
How much oxygen is in the air you are breathing right now?
The bends/decompression sickness is caused by a buildup of CO2 in the blood which expands when you rise from deep water too quickly.
What's the difference between additive and subtractive color mixing?
When you celebrate your birthday, are you celebrating the year you just completed or the year you are just beginning?
Your skin, nails, and hair are made from the same substance as a bird's beak! Or am I lying?
Viruses are not alive. They are like nature's machines.
How many feet are in one mile?
What is the chamber in a crystal or mineral called when it has trapped water inside?
Why do we have a name for certain meats that differs from what we call the animal (e.g., pig and pork)?
The moon is nearer the Earth when it rises above the horizon, and thus, it looks larger.
what would happen to life on Earth if water didn't expand when it froze?
A gravitational singularity is the only phenomenon that can trap light.
How does a refrigerator cool air?
There is an animal that can create temperatures as hot as the surface of the sun!
Everyone knows time exists...right?