Laws of Motion Part 1

Reorder the following ellipses based upon eccentricity from lowest to highest.

• 
• 
• 
• 

Use the image to match the number with the variable.

• c

• 4

• F

• 1

• b

• 5

• C

• 2

• a

• 3

Which point is a FOCUS?

• A

• B

• C

• D

• E

An ellipse with a eccentricity of zero is a...

• circle

• oval

• parabola

Which planet has the most eccentric orbit?

• Earth

  0.0167

• Saturn

  0.0541

• Neptune

  0.0086

• Venus

  0.0068

Why is it ok to model the planets orbits as circular?

• Most of the orbits eccentricities are close to zero

• Most of the orbits eccentricities are close to 1.

• It is not ok to model the planets orbits as circular.

• The planets orbits are actually elliptical.

Tags

NGSS.HS-ESS1-4

Kepler's First Law states that planet orbits are...

• ellipses

• circular

• heliocentric

• geocentric

Tags

NGSS.HS-ESS1-4

A heliocentric star system is one with the ____ in the center of the orbit.

• Earth

• Sun/Star

• Focus

• Vertex

Tags

NGSS.MS-ESS1-1

The sun ____ the center of the major axis of the elliptical path of the celestial objects that orbit the sun.

• is

• is not

Tags

NGSS.MS-ESS1-1

Why are Kepler's Laws about planetary motion accepted above all others that tried to explain the motions before him?

• Some of the other scientists didn't make sense.

• Kepler stated the paths are elliptical.

• Kepler's ideas were supported by the observations.

• Kepler is right.