1. Cornell Notes 2-2-2-1 How Heavy?
Page 53
November 7, 2017

2. Review force and gravity
What is the difference between mass and weight?
Will the mass stay the same everywhere that the object goes?
Will the weight stay the same everywhere that the object goes?
Gravity and Kinetic Energy Course, 2.2: How Heavy?
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3. Review force and gravity
Weight is a measurement of the force of gravity pulling an object toward Earth. Is gravity the same everywhere?
Gravity and Kinetic Energy Course, 2.2: How Heavy?
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4. Gravity and Kinetic Energy Course, 2.2: How Heavy?
Focus question
What is gravity like on other planets compared to Earth?
Gravity and Kinetic Energy Course, 2.2: How Heavy?
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5. Gravity and Kinetic Energy Course, 2.2: How Heavy?
Gravity scenarios
Notebook sheet 8, Response Sheet— Investigation 2
Discuss the two scenarios in your group and record your responses.
Gravity and Kinetic Energy Course, 2.2: How Heavy?
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6. Discuss first scenario
Gravity and Kinetic Energy Course, 2.2: How Heavy?
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7. Discuss second scenario
Gravity and Kinetic Energy Course, 2.2: How Heavy?
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8. Discuss second scenario
Gravity is one of the basic forces of the universe.
The force of gravity pulls objects together.
You and everything around you is being pulled toward Earth because it is so massive.
Let’s think about how the force of gravity on Earth compares with other planets.
Gravity and Kinetic Energy Course, 2.2: How Heavy?
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9. Discuss second scenario
What questions do you still have about gravity?
Gravity and Kinetic Energy Course, 2.2: How Heavy?
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10. Gravity and Kinetic Energy Course, 2.2: How Heavy?
Discuss Moon gravity
Is there gravity on the Moon?
How do you know?
Is the force of gravity on the Moon the same as the force of gravity here on Earth?
Why isn’t the force of gravity on the Moon the same?
Gravity and Kinetic Energy Course, 2.2: How Heavy?
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11. Gravity and Kinetic Energy Course, 2.2: How Heavy?
Overview the data
Notebook sheet 9, Weight in Various Locations
Gravity and Kinetic Energy Course, 2.2: How Heavy?
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12. Gravity and Kinetic Energy Course, 2.2: How Heavy?
Overview the data
Celestial body: the object being studied
Image and diameter: comparative size of objects
Object mass: mass of object as compared to Earth
Person mass: mass of person measured in kilograms
Gravity and Kinetic Energy Course, 2.2: How Heavy?
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13. Gravity and Kinetic Energy Course, 2.2: How Heavy?
Overview the data
Person weight: the weight of the person on each object
Gravitational force: 1 represents acceleration of gravity on Earth (9.8m/s2); less than 1 represents a smaller acceleration of gravity.
Gravity and Kinetic Energy Course, 2.2: How Heavy?
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14. Gravity and Kinetic Energy Course, 2.2: How Heavy?
Overview the data
For example, on Earth the acceleration of gravity is 1 g, that is 1 ✕ 9.8 m/s2.
On Mars, it is 0.38 g, that is 0.38 ✕ 9.8 m/s2.
Gravity and Kinetic Energy Course, 2.2: How Heavy?
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