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7Sci Chapter 17 Sec4
Matter In Motion - Gravity:A Force of Attraction
Question | Answer |
---|---|
What is the simplest way to find an object's center? | spin it |
What happens to the force of gravity between two objects as the distance between them increases? | it decreases |
What is the force of gravity directly related to? | it is directly related to the amount of mass of the objects |
What is all mass affected by? | gravity |
What does all matter have? | mass |
When is the gravitational pull greater between two objects? | when they have greater masses |
What is mass? | a measure of the amount of matter |
A student has a weight of 420 N on Earth. What is the student's weight on the moon? | 70 N |
What is the law of universal gravitation? | gravitational force related to mass and distance |
What can change with its location? | an object weight |
What is the force that pulls everything toward Earth's center? | Earth's gravity |
How much does a unit of mass weigh? | a kilogram |
What is the difference between mass and weight? | Mass is the amount of matter in an object; weight is a measure of the gravitational force on an object |
What must you know in order to determine the gravitational force between two objects? | their masses and distance between them |
Where would you weigh the most, on a boat, on a space shuttle, or on the moon? | on a boat |
What is weight? | a measure of the gravitational force exerted on an object |
What is gravity? | a force attraction between objects that is due to their masses and the distance between the objects |
What is center of mass? | the point at which an object's total mass can be considered concentrated |
What changes when gravitational force changes? | weight |
What would be your mass if you moved to Jupiter? | unchanged |
What would be your weight if you moved to Jupiter? | changed |