Force and Motion: The Force of Gravity
Clip: Special | 1m 4sVideo has Closed Captions
What is the difference between mass and matter?
Gravity is the force of action between two objects. It’s called a natural force because it acts at a distance rather than needing to be in contact. Gravity is the force that holds us down on Earth and what keeps the planets spinning around the Sun.
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Science Trek is a local public television program presented by IdahoPTV
Major Funding by the Laura Moore Cunningham Foundation and the Idaho National Laboratory. Additional Funding by the Friends of Idaho Public Television and the Corporation for Public Broadcasting.
Force and Motion: The Force of Gravity
Clip: Special | 1m 4sVideo has Closed Captions
Gravity is the force of action between two objects. It’s called a natural force because it acts at a distance rather than needing to be in contact. Gravity is the force that holds us down on Earth and what keeps the planets spinning around the Sun.
Problems with Closed Captions? Closed Captioning Feedback
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Science Trek
Science Trek is a place where parents, kids, and educators can watch short, educational videos on a variety of science topics. Every Monday Science Trek releases a new video that introduces children to math, science, technology, engineering, and math (STEM) career potentials in a fun, informative way.[MUSIC] JOAN CARTAN-HANSEN, HOST: Gravity is the force of action between two objects.
It's called a natural force because it acts at a distance rather than needing to be in contact.
To understand gravity, you first have to define mass and matter.
Matter takes up space and has weight.
And mass is the stuff that matter is made of.
Gravity pulls on mass, but the same amount of mass can weigh differently depending on what world it is sitting on.
Astronauts could bounce easily around on the moon because the moon's gravity is less than the Earth's.
That's because the moon's mass is physically smaller.
Gravity is the force that holds us done on Earth.
It's the force that keeps the planets revolving around the sun.
Gravity is also affected by how close objects are to one another.
The Earth's gravitational pull on Pluto, isn't very strong because Pluto is so far away.
But the Earth's gravitational pull on the moon is great.
The Earth's gravity keeps the moon in Earth's orbit.
For more information about force and motion, check out the science trek website.
You'll find it at science trek dot org
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Science Trek is a local public television program presented by IdahoPTV
Major Funding by the Laura Moore Cunningham Foundation and the Idaho National Laboratory. Additional Funding by the Friends of Idaho Public Television and the Corporation for Public Broadcasting.