Kepler's Laws and Calculation of Period High School

Where is the planet moving faster

• Position A to B
• Position B to C
• Position H to I
• Position I to J

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NGSS.HS-ESS1-4

Kepler's first law states that the orbits of the planets are oval in shape or 

• ellipses
• perfect circles

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NGSS.HS-ESS1-4

According to Kepler's 3rd law, the square of the time it takes for an object to orbit, T, is directly related to the cube of the distance, r, between the object and what it is orbiting.            

•  T³ = k*r²
• T² = k*r³
• T³ = k/r²
• T² = k/r³

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NGSS.HS-ESS1-4

NGSS.HS-PS2-4

According to Kepler's 3rd law, the square of the time it takes for an object to orbit, T, is directly related to the cube of the distance, r, between the object and what it is orbiting.    
What this means is that if a satellite moves away from what it is orbiting,

• the larger the constant k is.
• the smaller the constant k is.
• the longer the orbital period is.
• the shorter the orbital period is.

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NGSS.HS-ESS1-4

Kepler’s 3rd law states the square of the orbital period is proportional to the cube of the orbital radius. (T²=r³)

If a planet's orbital radius is doubled, what happens to the length of a year on that planet?

• It will become twice as long
• It will become about 8 times as long
• It will become 2.8 times as long
• It will remain the same

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NGSS.HS-ESS1-4

A planet moves __________ when it is farthest from the sun.

• faster
• slower

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NGSS.HS-ESS1-4

Planets revolve around the sun in elliptical orbits

• Law of Periods

• Law of orbits

• Law of Areas

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NGSS.HS-ESS1-4