Science Riddles & Brain Teasers
I am something you need to live. I have no color, taste, or smell. You breathe me in every second.
What is oxygen (or air)?
Myth or Fact: Humans only use 10% of their brains.
What is a myth?
You forget sunscreen and spend all day at the beach. The UV rays damage your skin. -What does it cause?-
What causes a sunburn?
This animal sleeps standing up and can even doze while walking.
What is a horse?
This is the largest organ in the human body.
What is the skin?
I can be a solid, liquid, or gas. You drink me every day.
What is water?
Myth or Fact: Lightning can strike the same place more than once.
What is a fact?
You are lost in the desert and have no water. Your body begins losing more water than it takes in.
-What does it cause?-
What is dehydration?
This organ uses about 20% of the body's energy even though it makes up only about 2% of body weight.
What is the brain?
This animal can regrow lost arms and some other body parts.
What is a starfish?
The more of me you take away, the larger I become.
hint: -10 points
What is a hole?
Myth or Fact: Goldfish only have a 3-second memory.
What is a myth?
A hiker gets bitten by a venomous snake. The venom enters the bloodstream. (what system?)
What is the circulatory system?
This animal can hold its breath for up to two hours underwater.
What is a sea turtle?
This teacher's favorite color is mustard yellow.
Who is Ms. Brooks!
I am not alive, but I grow. I do not have lungs, but I need air. I do not have a mouth, but water kills me.
What is fire?
Myth or Fact: Sharks are older than dinosaurs.
What is a fact?
A scuba diver rises too quickly from deep water. Gas bubbles form in the bloodstream.
Question: What condition is this called? -explain-
What is decompression sickness (the bends)?
This is the only bird known to fly backward.
What is a hummingbird?
An octopus has this many hearts.
What is three?
This force keeps you from floating off into space.
What is gravity?
Myth or Fact: The Great Wall of China can be seen from space with the naked eye.
What is a myth?
An astronaut removes their helmet in space where there is no oxygen or air pressure.
Question: Why would this be dangerous?
Because humans need oxygen to survive and the lack of air pressure would severely affect the body.
This ocean is the largest on Earth.
What is the Pacific Ocean?
This is the fastest land animal on Earth.
What is a cheetah?