I speak without a mouth and hear without ears. I have nobody, but I come alive with wind. What am I?
An echo
What three positive numbers give the same answer when multiplied and added together?
1, 2, and 3
Forward I am heavy, but backward I am not. What am I?
Ton
What occurs once in a minute, twice in a moment, and never in a thousand years?
The letter “M”
What planet is known as the Red Planet?
Mars
The more of me you take, the more you leave behind. What am I?
Footsteps
You see a boat filled with people, yet there isn’t a single person on board. How is that possible?
All the people are married
What 8-letter word can have a letter taken away and still be read the same way?
Envelope
Which weighs more, a pound of feathers or a pound of bricks?
Neither—they both weigh one pound
What gas do humans need to breathe to survive?
Oxygen
I have cities but no houses, forests but no trees, and rivers but no water. What am I?
A map
A farmer has 17 sheep, and all but 9 die. How many are left alive?
9
What word begins and ends with an E but only has one letter?
Envelope
There are two ducks in front of a duck, two ducks behind a duck, and a duck in the middle. How many ducks are there?
Three
What part of the plant conducts water from the roots to the leaves?
Xylem
I’m light as a feather, yet the strongest man can’t hold me for long. What am I?
Breath
If it takes 5 machines 5 minutes to make 5 gadgets, how long would it take 100 machines to make 100 gadgets?
5 minutes
Am a word of letters three; add two and fewer there will be. What word am I?
Few
If you have a bowl with six apples and you take away four, how many do you have?
Four (because you took them)
I am always moving but never walk, I have a bed but never sleep, and I run but never walk. What am I?
A river
I am always hungry, I must always be fed, and the finger I touch will soon turn red. What am I?
Fire
Two fathers and two sons spend the day fishing, but catch only three fish. How is this possible?
They are grandfather, father, and son
The more you take from me, the bigger I get. What am I?
A hole
A man builds a house with all four sides facing south. A bear walks by. What color is the bear?
White (it’s a polar bear at the North Pole)
I can be cracked, made, told, and played. I exist in the air, yet I weigh nothing. What am I?
A joke / sound (tricky science twist: sound is vibrations in air)