Q1: What is the only metal that is liquid at room temperature?
A1: Mercury
Q2: What gas do plants absorb from the atmosphere?
A2: Carbon dioxide (CO₂)
Q3: What is the hardest natural substance on Earth?
A3: Diamond
Q4: What part of the human body has no blood supply?
A4: The cornea (it gets oxygen directly from the air!)
Q5: What element makes up most of the sun?
A5: Hydrogen (about 75% of its mass!)
Brain Teasers & Riddles
Q6: I speak without a mouth and hear without ears. I have no body, but I come alive with the wind. What am I?
A6: An Echo
Q7: The more of me you take, the more you leave behind. What am I?
A7: Footsteps
Q8: I have keys but open no locks. I have space but no room. You can enter, but you can’t go outside. What am I?
A8: A keyboard
Fun & Strange Facts
Q9: What animal can hold its breath longer than a dolphin?
A9: A sloth! They can slow their heart rate and hold their breath for up to 40 minutes!
Q10: Which planet in the solar system spins the fastest?
A10: Jupiter—it completes one full rotation in just 10 hours!
Q11: What’s the only letter that doesn’t appear in any U.S. state name?
A11: The letter “Q”
Q12: Why do flamingos stand on one leg?
A12: To conserve body heat!