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!
Tap the tree to shake an apple loose. Watch which way it goes!
Tip: it never falls up, left or right — always straight down.
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".
Both arrows point to the centre — that's why nobody falls off!
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?
Surprise: even a tiny feather is pulled down. It just falls slowly because the air pushes against it.
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!
Slide toward the Moon to feel lighter and jump higher!
In space, far from big planets, gravity is so weak that astronauts float. Tap the button to turn gravity on and off!
Here's what you discovered:
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Great work! Next time you drop something, you'll know exactly who pulled it down — gravity!