2025 Kepler's 3 Laws of Planetary Motion

Since Earth has an elliptical orbit, the...

• Distance between the Sun and the Earth varies

• Distance between the Sun and the other focus varies

• Distance between Earth’s aphelion and perihelion varies

• Length of Earth’s period of revolution varies

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NGSS.MS-ESS1-2

NGSS.MS-ESS1-1

The orbit of a comet is shown below. At which point in the orbit would the comet's speed be the fastest? (a)  

• A
• B
• C
• D
• E

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NGSS.MS-ESS1-2

NGSS.MS-PS3-1

The table below illustrates data on Kepler's 3rd Law for the first 6 planets. Use it to estimate the orbital period of Asteroid Baade which has an orbital radius (a) of 2.55 AU.

• 19.2 years

• 4.07 years

• 0.77 years

• 50.2 years

• 1.67 years

Tags

NGSS.MS-ESS1-2

NGSS.MS-ESS1-3

The orbit of a comet around the sun is shown below. If the comet takes 2 years to move from point 1 to point 2 and 1 year to move from point 3 to point 4, then the green area must be _______ the red area.

• larger than

• smaller than

• equal to

Tags

NGSS.MS-ESS1-2

Which of the graphs best represents orbital velocity versus distance from the sun for planets?

• A

• B

• C

• D

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NGSS.MS-ESS1-2

NGSS.MS-PS2-4

What happens to the period of orbit as distance from the star increases?

• Increases

• Decreases

• Stays the same

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NGSS.MS-ESS1-2

Which diagram shows a planet with the least eccentric orbit?

• 1
• 2
• 3
• 4

As distance between the foci increases the eccentricity...

• increases

• decreases

• remains the same

• decreases than increases

Where is the planet moving faster?

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

What is true about the area between points A, B and the Sun, and the area between points H, I and the Sun?

• The area between A, B and the Sun is the largest.
• The area between H, I and the Sun is the largest
• Both areas are equal in size
• There is not enough information to determine the areas