Gravity What is Gravity Pick up a Brain
Gravity What is Gravity?
Pick up a Brain Pop: Observation Chart from the front table. You have five minutes from the time the bell rings to complete it. Bellringer After you have completed your Bellringer write your homework in your Planner
TLW be able to describe what determines the strength of the force of gravity between two objects. what two factors combine to keep the moon & Earth in orbit. Objectives Explain
Terms Force Gravity Law of universal gravitation Gravity Mass Weight Inertia
What keeps Earth & the moon in orbit? Gravity Why don’t they just fly off into space?
The force that attracts bodies of matter toward each other. Force: Gravity The Push or a pull force that holds the moon in orbit is different; it acts over long distances between objects that are not in contact.
Gravity: A force that attracts all objects toward each other. Gravity Newton’s law of universal gravitation: Every object in the universe attracts every other object.
strength of the force of gravity between two objects depends on two factors: Gravity The 1. The mass of the object 2. The distance between them
Mass: The amount of (stuff) matter in an object The force exerted on an object’s mass by gravity. Gravity Weight:
Mass & Distance Objects that are far apart exert less gravitational force on each other than objects that are close together.
Mass & Distance Force of Gravity attracts all objects toward one another If mass increases, force also increases
Mass & Distance Force of Gravity If distance increases, force decreases.
Inertia & Orbital Motion If the sun & Earth are constantly pulling on one another because of gravity, why doesn’t Earth fall into the Sun?
Inertia & Orbital Motion Inertia: The tendency of an object to resist a change in motion.
Inertia & Orbital Motion Newton concluded that two factors: 1. Inertia 2. Gravity Combine to keep Earth in orbit around the sun & the moon in orbit around the Earth.
TLW be able to describe what determines the strength of the force of gravity between two objects. what two factors combine to keep the moon & Earth in orbit. Conclusion Explain
Falling to Earth 1. Falling Race 2. Paper Race Activity 3. Trick Paper 4. Parachute Tests
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