What Is Gravity?
Gravity is the invisible pull that draws objects with mass toward one another. On Earth, gravity is what makes a tossed ball come back down and a dropped pencil land on the floor — everything is pulled toward the centre of the Earth, which is why 'down' means the same direction for someone in Singapore and someone on the opposite side of the planet. Because the pull always points toward the Earth's centre, nothing falls up, left or right.
The strength of gravity depends on how big and heavy an object is. The Earth is huge, so its pull is strong. The Moon is much smaller, so its gravity is only about one-sixth as strong — the same person would weigh far less standing on it. Far out in space, away from large planets, gravity is so weak that astronauts float.
Learning about gravity helps young learners understand why things fall, why we stay on the ground, why weight changes on the Moon, and how the same simple pull shapes everything from raindrops to the orbits of planets.
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A falling appleWhat pulls things down? 🍎 Toss a ball up. Drop a pencil. They always come down. Something invisible is pulling them — and it's called gravity. 🍏 Gravity is the gentle, never-resting pull that holds us all to the ground. Let's discover how it works — tap, drag and play your way through!
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Everything falls downGravity pulls everything down ⬇️ Tap the tree to shake an apple loose. Watch which way it goes! 🌳 🍎 Tip: it never falls up, left or right — always straight down.
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Which way does Earth pull?Earth pulls toward its centre 🌍 People in Singapore and people on the other side of the world both feel "down" toward the middle of the Earth. Tap each person and guess which arrow shows their "down". 🧒 🧒 centre Both arrows point to the centre — that's why nobody falls off!
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Sort the pullDoes gravity affect it? 🤔 Gravity pulls on everything that has weight — big or small. Tap each thing into the right basket. Tap each item: does it get pulled down by gravity? 🐘 Elephant 🪶 Feather 💧 Water drop ⚽ Ball 🧒 You Tap them all! Surprise: even a tiny feather is pulled down. It just falls slowly because the air pushes against it.
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Weight on the MoonThe Moon pulls more gently 🌙 The Moon is smaller than Earth, so its gravity is weaker — about 1/6 as strong. Drag the slider to travel from Earth to the Moon and watch your weight change! 🧍 On Earth you weigh 30 kg 🌍 Earth🌙 Moon Slide toward the Moon to feel lighter and jump higher!
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No gravity?What if gravity switched off? 🚀 In space, far from big planets, gravity is so weak that astronauts float. Tap the button to turn gravity on and off! 🧑🚀 ⭐ ✨ ⭐ Gravity ON ⬇️ Gravity OFF 🌌
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You did it!You're a gravity explorer! 🎉 Here's what you discovered: 🌍 Gravity is an invisible pull from anything big, like a planet. ⬇️ It pulls things down, toward the centre of the Earth. 🐘🪶 It pulls on everything with weight — big or small. 🌙 The Moon pulls more gently, so you weigh less there. 🚀 With almost no gravity in space, astronauts float. 🌟 Great work! Next time you drop something, you'll know exactly who pulled it down — gravity!
Frequently asked questions
- What is gravity in simple words for kids?
- Gravity is an invisible pull that comes from anything big, like the Earth. It is what makes dropped objects fall down toward the ground instead of floating away.
- Why does everything fall down instead of up?
- The Earth pulls every object toward its centre, and from where we stand that direction is 'down'. That is why things always fall straight down and never up, left or right.
- Why do you weigh less on the Moon?
- The Moon is much smaller than the Earth, so its gravity is weaker — about one-sixth as strong. The same person is pulled more gently there, so they weigh much less than on Earth.
- Why do astronauts float in space?
- Far from large planets, gravity is extremely weak because there is no big body nearby pulling strongly. With almost nothing to pull them down, astronauts and their objects float.
- Does gravity pull on everything?
- Yes. Gravity pulls on anything that has weight, big or small — a feather, a pencil and a heavy rock are all pulled toward the Earth.
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