Kepler's Third Law

Kepler's 3rd law states that a planet's period is proportional to its distance from the sun. Use the calculator found at http://www.1728.org/kepler3.htm to solve the following problem:

Mercury's period (p) is 0.241 years, how far is it from the sun (a)? Your answer should be in AUs. Do NOT include units in your answer.

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NGSS.HS-ESS1-4

A planet is 3.9 AU from the Sun. Find the period of the planet (p) in years. Do NOT include units in your answer.

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NGSS.HS-ESS1-4

Kepler's 3rd laws states that the semi-major axis of a planet’s orbit (average distance to the sun in A.U.’s) is related to the planet’s orbit period by the equation:

p² = a³

In this equation what does 'p' represent?

• A planet's average distance from the sun

• A planet's orbital period

Tags

NGSS.HS-ESS1-4

Kepler’s 3^rd law states that the semi-major axis of a planet’s orbit (average distance to the sun in A.U.’s) is related to the planet’s orbit period (in Earth-years) by the equation:

p² = a³

What does 'a' represent in this equation?

• A planet's distance from the sun

• A planet's orbital period

Tags

NGSS.HS-ESS1-4

Kepler's third law states the closer a planet is to its Sun, the shorter the planet's orbital period (year) and the farther a planet is from the Sun the longer the year. 

• True

• False

Tags

NGSS.HS-ESS1-4

Kepler's third law states the closer a planet is to its Sun, the shorter the planet's orbital period (year) and the farther a planet is from the Sun the longer the year. 

• True

• False

Tags

NGSS.HS-ESS1-4

Which is the formula for Kepler's third law?

• 
• 
• 
• 

Tags

NGSS.HS-ESS1-4

The amount of time it takes for a planet to orbit around the sun is it's _____

• axis length

• foci

• magnitude

• period

Tags

NGSS.HS-ESS1-4

NGSS.HS-PS2-4

The farther a planet is from the sun the __ it's period of orbit.

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NGSS.HS-ESS1-4

Uranus orbits the sun at a distance of 19.19 AU. What is Uranus’ orbital period in earth years?

Tags

NGSS.HS-ESS1-4