According to Kepler's first law, what shape are the paths of the planets around the Sun?

• Circles

• Ellipses

• Parabolas

• Rectangles

Tags

NGSS.HS-ESS1-4

Kepler's first law states that the paths of the planets are ellipses, with the ______ at one focus.

• Sun

• Earth

• Moon

• Comet

Tags

NGSS.HS-ESS1-4

NGSS.HS-PS2-4

What are ellipses characterized by?

• Eccentricity and length of major axis

• Only by their color

• Only by their size

• Only by their position

What is the plural of focus? Fill in the blank: The plural of focus is _______.

• foci

• focuses

• focuss

• focies

According to the diagram, what is always the same for any point on the ellipse?

• A-B

• A+B

• A*B

• A/B

What is eccentricity?

• Eccentricity is the degree of flatness.

• Eccentricity is the measure of mass.

• Eccentricity is the amount of energy.

• Eccentricity is the speed of rotation.

Tags

NGSS.HS-ESS1-4

What is the value of eccentricity (e) for a circle?

• 0

• 1

• 0.5

• 2

What is the value of Earth's eccentricity (e)?

• 0.017

• 0.5

• 0.1

• 0.25

In the formula e = c/a, what does 'c' represent?

• c = center to focus

• c = circumference

• c = chord length

• c = constant

Fill in the blank: Aphelion is the point on the orbit ________ from the sun.

• farthest

• closest

• fastest

• slowest

Tags

NGSS.HS-ESS1-4