Orbital Motion Test Review

Organize these options into the right categories

Groups:

(a) True

,

(b) False

• All space objects in the solar system

  travel at a constant speed.

• The distance between a planet and the

  Sun impacts a planet’s orbital period.

• A planet’s distance from the sun doesn’t impact its length of year.

• At a planet’s perihelion, it travels slowest in its orbit.

• All 8 planets orbit around the sun in an elliptical shape.

• Planets that are closer to the sun have a shorter planetary year.

Match the following

Groups:

(a) Kepler's 1st Law

,

(b) Kepler's 2nd Law

,

(c) Kepler's 3rd Law

• Aphelion is a point in a planets orbit

  when its farthest from the sun.

• A planet travels faster in its orbit when it

  is closer to the sun.

• The speed of a planet in its orbit varies.

• A planet’s orbital period depends on its

  distance from the sun.

• A planet’s orbit around the Sun is an

  elliptical shape.

• An outer planet will have a longer orbital

  revolution around the sun.

• Mercury takes a shorter time period to

  orbit the sun because it is the closest.

• Perihelion is a point in a planets orbit

  when its closest to the sun.

• A planet will travel slowest at its

  aphelion.

The Earth has an eccentricity of 0.0167 as it orbits around the Sun. Which diagram is the best representation of the orbit of the Earth around the Sun?

• 
• 
• 

From which options below would the planet appear to be moving the fastest?

• 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

The animation below illustrates Kepler's __________ law.

• first

• second

• third

The animation below illustrates Kepler's __________ law.

• first

• second

• third

Calculate the eccentricity of this planet.

• 5.4

• 0.67

• 0.25

• 0.19

When is the Earth moving the fastest?

• July

• November

• January

• February

Which planet orbits the fastest around Star A?

• Planet X

• Planet Y

• Planet Z