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The Human Body
The Human Body
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Fun science facts about the human body for kids.
Flashcards
30 cards
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Practice quiz
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Questions
30
Answers
1
How strong are your bones?
Only as strong as fragile glass
About as strong as a tree branch
5 times stronger than steel metal
Twice as strong as a stone boulder
2
How much spit does your body produce in one year?
Only a little bit when needed
A whole cup
Enough to fill a milk jug
Enough to fill 2 bathtubs
3
What is the largest organ in your body?
Your brain
Your stomach
Your skin
Your intestines
4
If you opened your lungs and laid them on the floor, how big would they be?
As big as a dinner plate
As big as a tennis court
As big as a chalkboard
As big as a desk
5
Your tongue has a similar muscle structure to which animal part?
Octopus's tentacle
Beaver's tale
Elephant's trunk
Duck's foot
6
How many nerve cells and connections do you have in your body?
You can't count them because they're microscopic
Only one big one connected
More than there are stars in the Milky Way
Thousands
7
Which part of your body never stops growing?
Ears
Hands
Nose
Your whole body
8
Which is the only part of the body that cannot heal itself?
Brain
Eyes
Heart
Teeth
9
How many muscles do you use to smile?
Over 100
17 muscles
26 less than it takes to frown
Only 3
10
Which makes the body die faster: lack of food or lack of sleep?
Both are the same
You won't die from either one
Lack of food
Lack of sleep
11
How many times does your heart beat in a day?
Exactly 4,295 times
About 100,000 times
Once every minute: almost 1,500 times
No one has counted to tell
12
How much fat does the average human body make?
Enough to make 10 pans of Jell-O
Enough to fit in a small purse
Enough to make 7 bars of soap
Enough to fill a bathtub
13
How many bacteria are in your mouth?
Bacteria can't survive in your mouth
Less than 50
More than there are people in the world
Almost 1 million
14
Where are the fastest muscles in your body?
Neck
Legs
You accidentally left those one's at home
Eyes
15
What is your brain doing when you're sleeping?
Planning the next day
Taking a break and doing it's own thing
Nothing, it's sleeping too
It's more active than when you are awak
16
You have 206 bones in your body. How many were you born with?
About 50
Only 20 to start
Almost 300
A human's bones don't start growing until after birth
17
How many blood vessels do you have?
About 100!
Enough to circle the world 4 times
More than we can count
Only 2
18
How fast do message from your brain travel through your body?
200 miles per hour
They only take 1 minute to travel
As fast as a car on the highway
As fast as you can ride your bike
19
How many types of human blood are there?
Only 1, we all have the same
4
Over 30
Countless, everyone's is unique
20
How strong are human teeth?
About medium strength
They're the strongest substance in the world
Very fragile
As strong as a shark's teeth
21
Which is true about your lungs?
Real lungs are yellow
The left lung is slightly smaller than the right lung
You only need one lung to survive
They are about the size of your fist
22
Where are your tastebuds?
Nose
Throat
Esophagus
Tongue
23
How well can your eyes see?
Better than any other living thing
Not as well as a bat can
As well as a professional camera
3 times better than the best camera
24
Which muscle is the strongest in your body?
Your myocardium (heart)
Your gluteus maximus (rear)
Your biceps (arms)
Your masseter (jaw)
25
True or False: there is acid in your stomach.
True: it's strong enough to dissolve some metals.
True: but it's only as strong as fruit acid.
False: the liquid in your stomach is water.
False: the inside of your stomach is dry.
26
Which muscle is the largest in your body?
Your gastrocnemius muscle
Your rectus abdominis
Your gluteus maximus
Your stapedius muscle
27
Which organ is the fattest one in your body?
Bladder
Brain
Intestines
Stomach
28
How many muscles does it take for you to take one step?
200
2
All of your muscles
20
29
Which can you do faster: detect taste or blink your eyes?
Detect taste
Blink your eyes
Detect taste
Blink your eyes
30
Which do you have the most of in your body?
Muscles
Skin
Water
Fat
