Gravity Notes
Gravity Vocabulary Force – a push or a pull Gravity – a force that attracts all objects to each other Mass – the amount of matter in an object Weight – the force of gravity on an object
Gravity attracts ALL objects in the entire universe to each other!!! Increase mass increase gravity Decrease distance increase gravity You don’t feel the gravity from your classmate, because you are both “small” You don’t feel the gravity of the moon because it is too far away You do feel the gravity of the Earth because it is very large and you are very close to it!!!
Orbital Motion Why doesn’t the Moon crash into the Earth because of gravity? Or the Earth into the Sun? Two factors in orbital motion (revolution) Gravity Inertia – the tendency of an object to resist changes in motion
Orbital Motion