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What is Weight? Definition: Weight is a measurement of how strongly gravity pulls on a mass. Weight is completely dependent on the amount of gravity there.

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Presentation on theme: "What is Weight? Definition: Weight is a measurement of how strongly gravity pulls on a mass. Weight is completely dependent on the amount of gravity there."— Presentation transcript:

1 What is Weight? Definition: Weight is a measurement of how strongly gravity pulls on a mass. Weight is completely dependent on the amount of gravity there is. It the result of the force of gravity!!! Without gravity there is NO WEIGHT (the ultimate diet plan!!!)

2 Amount of Mass & Gravity = Weight
If you add more mass – you’ve increased the attractive force between you and the earth Therefore you “weigh” more! The Earth must really like me!

3 Gravity, Distance and Weight:
If I leave the earth and head to outer space, I am farther away from the gravity source. Therefore, you weigh less. Dude! I CAN FLOAT AROUND!

4 Mass ≠ Weight Mass and Weight are NOT the same thing!
Mass: Amount of matter an object contains Has inertia (resistance to a push/pull) Weight (Force): Dependant upon Gravity (mass is not) Attraction between two objects Can change if the objects change distance or mass

5 Mass and Gravity = Weight
Weight really is a measurement of the gravitational attraction between you and the earth. Remember – Weight is a force measurement Mass and Gravity = Weight When gravity pulls on your mass, the resulting force is called “weight”! Source of Gravity Source of Gravity Small mass = less pull = less weight Large mass = more pull = more weight

6 Compare: Mass vs. Weight on different planets:
Person on Earth is 150 lbs! Same person on Jupiter is lbs!!! Why is this true? What is different between Jupiter and Earth? Jupiter has more mass than the Earth Therefore it has more gravity! Your same mass would weigh more on Jupiter than on Earth! Q: Did the person’s MASS (amount of matter that makes them up) ever change?


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