Kepler

Kepler's 2nd Law states that planets move faster closer to the sun and slower farther away from the sun. What force is causing this to happen?

• inertia

• gravity

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NGSS.HS-ESS1-4

NGSS.HS-PS2-4

The point in a planets orbit where it is FARTHEST away from the sun

• aphelion

• perihelion

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NGSS.HS-ESS1-4

Which planet will take the least amount of time to revolve around the Sun (shortest year)?

• Mercury

• Venus

• Earth

• Mars

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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 3rd 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

Which of Kepler's Laws states that "All planets move about the Sun in elliptical orbits, having the Sun as one of the foci"

• Kepler's 1st law

• Kepler's 2nd law

• Kepler's 3rd law

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NGSS.HS-ESS1-4

Which of Kepler's laws states that planets travel faster when they are close to the sun then they do when they are farther from the sun?

• Kepler's 1st law

• Kepler's 2nd law

• Kepler's 3rd law

Tags

NGSS.HS-ESS1-4

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

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:

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.

Tags

NGSS.HS-ESS1-4

Kepler's 1st law says that the eccentricity of a planet's orbit can be determined with the following equation e=f/d

If the focal length of an ellipse is 2 and length of its major axis (d) is 5, what is the eccentricity (e) of the ellipse?