What Is Gravity?

🕐 4 min 26 sec 👦 Ages 6–8 🌍 English
Join Owlo and Koko as they explore the mystery of gravity and discover why things fall down. A fun way to learn about science!
Understand the concept of gravity Recognize how gravity affects objects Encourage curiosity about science
📖 Story Script
                    Koko:
                    Owlo! Owlo! You have to hear what happened to me this morning!
                
                    Owlo:
                    Well, good morning to you too, Koko. Come in, come in. What happened?
                
                    Koko:
                    I was carrying my big stack of books to school, and I tripped, and everything flew out of my arms and crashed to the ground.
                
                    Owlo:
                    Oh dear! Are you alright?
                
                    Koko:
                    I'm fine! But it was so strange. Every single book landed on the ground. Not one of them floated away or went up. They all just went down.
                
                    Owlo:
                    You know, Koko, that is actually a very sharp observation. Why do you think everything always falls down and never up?
                
                    Koko:
                    I never really thought about it before. It just always happens that way, doesn't it?
                
                    Owlo:
                    It does! And there is a name for the invisible force that pulls everything down toward the ground. It is called gravity.
                
                    Koko:
                    Gravity. That sounds like a very serious word.
                
                    Owlo:
                    It is a very important idea! Gravity is a pulling force. It is what keeps your paws on the ground right now instead of floating up to the ceiling.
                
                    Koko:
                    Wait, without gravity I would just float around like a bubble?
                
                    Owlo:
                    Exactly like that! Every planet, every moon, every star has gravity. The bigger the object, the stronger its pull.
                
                    Koko:
                    So the Earth is pulling me down right now and I can't even feel it?
                
                    Owlo:
                    You feel it every single moment, actually. When you walk, when you jump, when your books crashed to the ground this morning — that was all gravity at work.
                
                    Koko:
                    Whoa. So gravity is kind of like an invisible hand that never lets go?
                
                    Owlo:
                    I love that description. Let's go to the science lab and I'll show you something that might make this even clearer.
                
                    Owlo:
                    Here we are. Now, I have two things for you to drop at the same time. This big heavy book, and this small eraser.
                
                    Koko:
                    Okay. I'm holding one in each hand. Should I drop them together?
                
                    Owlo:
                    Drop them together, yes. What do you think will happen?
                
                    Koko:
                    I think the heavy book will hit the ground first because it's bigger and heavier.
                
                    Owlo:
                    Go ahead and try it!
                
                    Koko:
                    Whoa! They both landed at exactly the same time! How is that possible?
                
                    Owlo:
                    That surprises almost everyone the first time! Gravity pulls all objects down at the same speed, no matter how heavy they are.
                
                    Koko:
                    So a feather and a rock would land at the same time too?
                
                    Owlo:
                    A feather is trickier because air slows it down as it floats. But in a place with no air, yes, they would land together at the exact same moment.
                
                    Koko:
                    That is the most surprising thing I have learned in a long time.
                
                    Owlo:
                    A scientist named Galileo figured this out hundreds of years ago. He was just as surprised as you are right now.
                
                    Koko:
                    I like Galileo. He sounds like someone who also dropped a lot of things.
                
                    Owlo:
                    He certainly did, and on purpose! Now, here is one more thing to think about. Gravity does not only work on Earth.
                
                    Koko:
                    What do you mean?
                
                    Owlo:
                    The Moon has gravity too, but it is much weaker than Earth's. If you jumped on the Moon, you would float up very slowly and come back down very gently.
                
                    Koko:
                    That sounds like the best jump ever. I want to jump on the Moon.
                
                    Owlo:
                    Maybe one day you will! And the Sun has the strongest gravity of all in our solar system. It pulls all the planets, including Earth, and keeps them orbiting around it.
                
                    Koko:
                    So gravity is not just about dropping books. It is holding the whole solar system together?
                
                    Owlo:
                    Beautifully said, Koko. It really is. Now, before we wrap up today, can you tell me what you learned about gravity?
                
                    Koko:
                    Okay! So, gravity is an invisible pulling force that pulls everything toward the ground. It works the same on heavy things and light things, they fall at the same speed. The Moon has weaker gravity than Earth, and the Sun's gravity is so strong it holds all the planets in place. And also, I learned that dropping things on purpose can actually be science!
                
                    Owlo:
                    That last part might be the most important discovery of the day. Well done, Koko.
                
                    Koko:
                    Next time I drop my books, I'm going to tell everyone I was doing a gravity experiment.