We can figure out how heavy Earth is by using something we know, like a seesaw and some math.
Imagine you're on a seesaw with your friend at the park. If both of you weigh the same, the seesaw stays balanced. But if one of you is heavier, that side goes down. Now imagine Earth is like a giant version of your friend, really heavy!
Scientists use something called gravity, which is the invisible pull that keeps us on the ground. They know how strong gravity is and how far we are from Earth’s center, kind of like measuring how far you sit from the middle of the seesaw.
By using those two things, gravity and distance, they can do some cool math, like this:
Mass = (Gravity × Distance²) ÷ Something Else
It's like knowing how heavy your friend is by watching how much the seesaw tips and how far apart you both are from the center. And with that, scientists found out Earth weighs about 6 trillion billion kilograms, which is really, really heavy! We can figure out how heavy Earth is by using something we know, like a seesaw and some math.
Imagine you're on a seesaw with your friend at the park. If both of you weigh the same, the seesaw stays balanced. But if one of you is heavier, that side goes down. Now imagine Earth is like a giant version of your friend, really heavy!
Scientists use something called gravity, which is the invisible pull that keeps us on the ground. They know how strong gravity is and how far we are from Earth’s center, kind of like measuring how far you sit from the middle of the seesaw.
By using those two things, gravity and distance, they can do some cool math, like this:
Mass = (Gravity × Distance²) ÷ Something Else
It's like knowing how heavy your friend is by watching how much the seesaw tips and how far apart you both are from the center. And with that, scientists found out Earth weighs about 6 trillion billion kilograms, which is really, really heavy!
Examples
- A child uses a toy ball to understand how gravity helps calculate the Earth's mass.
- A simple experiment with falling apples shows how scientists measure big things.
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See also
- What Happens If You Fall Through The Center Of The Earth?
- How the tides REALLY work?
- What if everyone jumped at once?
- What is Earth's gravity on the Moon's surface?
- What If You Dug a Hole Through the Earth?