Kepler's Laws

What is an orbit?

• A straight line path

• A curved path one object follows around another due to gravity

• A random path in space

• A circular path only

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NGSS.MS-ESS1-2

NGSS.MS-PS2-4

NGSS.MS-ESS1-1

What shape do most orbits take?

• Perfect circle

• Ellipse

• Square

• Triangle

What keeps an object in orbit?

• Only gravity

• Only inertia

• The balance between inertia and gravity

• Friction

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NGSS.MS-ESS1-2

NGSS.MS-PS2-4

What happens if an object's forward speed decreases too much?

• It will escape orbit

• It will fall toward the Sun

• It will move faster

• It will remain in orbit

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NGSS.MS-ESS1-2

NGSS.MS-PS2-4

What is Kepler's First Law?

• Planets move in circular paths

• Each planet moves in an elliptical path with the Sun at one focus

• Planets move at constant speed

• All planets have the same orbit

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NGSS.MS-ESS1-2

What does Kepler's Second Law state?

• Planets move slower when closer to the Sun

• A line joining a planet and the Sun sweeps out equal areas in equal times

• All planets have the same speed

• Planets do not change speed

Tags

NGSS.HS-ESS1-4

What is the relationship described in Kepler's Third Law?

• T² is proportional to R²

• T² is proportional to R³

• T is proportional to R

• R is proportional to T

What happens to gravitational force as distance increases?

• It increases

• It decreases

• It remains the same

• It becomes zero

What role does gravity play in orbital motion?

• It pushes objects away

• It acts as a centripetal force pulling objects toward the center of their orbit

• It has no effect

• It only affects large objects

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NGSS.MS-ESS1-2

NGSS.MS-PS2-4

NGSS.MS-ESS1-1

What is the result of the gravitational pull between Earth and the Moon?

• The Moon orbits Earth

• Earth orbits the Moon

• They do not affect each other

• They collide

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NGSS.MS-ESS1-2

NGSS.MS-PS2-4

NGSS.MS-ESS1-1