MS Earth Science E-Notes Free Of Use
Gravity of motion
Here:
What I Am Learning!
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Vocabulary:
force
gravity
inertia
mass
Newton's first law of motion
Newton's law of universal gravitation
weight
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Sir Isaac Newton
Was a farmed mathematician, astronomer, and physicist
Was one of the most influential scientists in human history
Developed laws of motion and helped develop a new type of math, calculus
Created the first reflecting telescope in 1668
Concluded that gravity is a force that acts between Earth and the moon
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Gravity is the force that governs motion in the solar system.
It is the force that creates stars and planets.
It is the force that pulls an object toward the center of the Earth.
Newton's law of universal gravitation states that every object in the universe attracts every other object.
Gravity is measured in newtons.
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Mass affects the force of gravity.
Mass is the amount of matter in a object.
•The mass of an object does not change based on location.
Objects with more mass have more gravity.
•Earth has more gravity than the moon.
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Weight is dependent on mass and gravity
Weight is the force of gravity pulling on an object.
An object's weight depends on its location in the universe
•An object would weigh less on the moon than on Earth
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Mass and distance affect gravity.
The strength of gravity between two masses increases when mass increases.
The strength of gravity between two masses decreases as distance between them increases
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Inertia is the tendency of an object to resist change in motion.
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Newton's first law of motion states that an object at rest will stay at rest and that an object in motion will stay in motion.
This law is also known as the law of inertia.
It explains that objects in motion will have a constant speed and direction until they are acted upon by a force.
Objects with more mass have more inertia.
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Both gravity and inertia keep the moon in orbit around Earth.
The moon's inertia prevents Earth's gravity from pulling the moon into Earth.
Earth's gravity prevents the moon from going off in a straight line.
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Newton's law of universal gravitation: Objects with greater mass have greater pull on other objects.
Every object in the universe attracts every other object.
Objects with greater mass have greater pull on other objects
This pull is called gravity.
Newton's first law of motion states that:
an object at rest will stay at rest
an object in motion will stay in motion with a constant speed and direction until it is acted on by a force
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Mass and distance affect gravity.
Mass of object increases. → Strength of gravity increases.
Distance between two objects increases. → Strength of
gravity decreases.
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Gravity and inertia affect orbital motion.
Gravity→Inertia→Orbit
Gravity: The pull of a larger body on a smaller body
Inertia: The tendency of a body to keep moving in a straight line
Orbit: Path taken by a body due to gravity pulling on it plus the forces of its own inertia
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