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Terrestrial Planets (Grade 9)

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Name: Date:

Terrestrial Planets

Name the planet associated with the following feature or fact:

Strong magnetic field, high oxygen content in atmosphere                 
Name the planet associated with the following feature or fact:

Highest temperature differential between night and day                     
Name the planet associated with the following feature or fact:

Retrograde rotation                 
Which planet is pictured?
Planet Mars - Small
  1. Mars
  2. Earth
  3. Venus
  4. Mercury
This planet takes the longest (243 Earth days) to rotate about its axis.
  1. Earth
  2. Jupiter
  3. Mars
  4. Venus
The predominant component of the atmosphere of the planet pictured is
Planet Venus - Small
  1. oxygen.
  2. nitrogen.
  3. carbon dioxide.
  4. carbon monoxide.
One day on Mercury is equal to about 59 Earth days. Which statement best explains this phenomena?
  1. Mercury rotates slower than Earth.
  2. Mercury revolves faster than Earth.
  3. Earth is farther from the Sun than Mercury.
  4. Earth has a lower orbital eccentricity than Mercury.
Earth is about how old?
  1. 4,500 years
  2. 450,000 years
  3. 4,500,000 years
  4. 4,500,000,000 years
The surface of the planet pictured is most similar to the surface of
Planet Mercury - Small
  1. the Sun.
  2. the Moon.
  3. Earth.
  4. an asteroid.
It is called Earth's twin because it is similar in size, mass, density, and structure (crust, mantle, and core).
  1. Earth
  2. Mars
  3. Venus
  4. Mercury
Describe how Eratosthenes measured the size of Earth.

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