Kepler's First Law

Planets orbit the Sun in a shape called a(n)

• circle
• ellipse
• focus
• perihelion

An ellipse is drawn around two points called

• aphelion
• perihelion
• foci
• axis

When a planet orbits the Sun, one of the foci of the elliptical orbit is 

• the axis
• the perihelion
• the center
• the Sun

What has an eccentricity of zero

• a straight line
• a large ellipse
• a circle
• a small ellipse

Which ellipse has the lowest eccentricity?

• Top
• Middle
• Bottom

Which ellipse has the highest eccentricity?

• Top
• Middle
• Bottom

What is the term for the point at which the Earth is closest to the sun?

• Perihelion
• Aphelion
• Precession
• Inclination

What is the term for the point at which the Earth is farthest from the sun?

• Perihelion
• Aphelion
• Precession
• Inclination

Kepler's first law is

• planets travel in an ellipse e=f/d

• planets sweep out equal areas in equal times A1=A2

• the farther the distance from the sun the longer it takes to orbit p^2=a^3

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

Which of these planets have the most eccentricity (most squishiness of their ellipse): Planet A 0.2, Planet B 0.4, Planet C 0.6, Planet D at 0.8

• Planet A at 0.2

• Planet B at 0.4

• Planet C at 0.6

• Planet D at 0.8