Rocky Planets
  • 1. Our solar system is made up of mostly _____ _____.
A) comets
B) asteroids
C) empty space
D) planets
  • 2. Which of these is NOT part of our solar system?
A) rocky planets
B) gas giant planets
C) undiscovered planets
D) watery planets
  • 3. How many categories of planets are there?
A) 4
B) 2
C) 3
D) 8
  • 4. These planets are all part of the _____ category: Mercury, Venus, Earth, and Mars.
A) Gas Giant
B) Watery
C) Rocky
D) Undiscovered
  • 5. Which planet is closest to the sun?
A) Mercury
B) Earth
C) Venus
D) Mars
  • 6. How many days does it take to revolve around the sun?
A) 58
B) 365
C) 88
D) 50
  • 7. Which planet has the greatest temperature difference from daytime to nighttime?
A) Mars
B) Earth
C) Mercury
D) Venus
  • 8. Which planet is very similar to Earth?
A) Mercury
B) Earth
C) Venus
D) Mars
  • 9. Venus rotates in the ________ direction as Earth.
A) same
B) alike
C) fast
D) opposite
  • 10. The surface of Venus has ______ ______.
A) volcanic ridges
B) smooth ridges
C) tall, sharp cliffs
D) lakes and rivers
  • 11. Which planet is third from the sun?
A) Venus
B) Mars
C) Earth
D) Mercury
  • 12. Earth is the only planet known to have ______.
A) volcanoes
B) sunlight
C) cliffs
D) life
  • 13. Because Earth has so much water it is known as the ____ planet.
A) blue
B) green
C) watery
D) smallest
  • 14. Tectonic activity is the Earth's ______.
A) trees constantly changing color
B) temperature always changing
C) plates constantly in motion
D) water always evaporating
  • 15. Earth revolves around the sun in _____.
A) 24 hours
B) half a day
C) 6 months
D) 365 1/4 days
  • 16. The Earth's _____ causes changes in seasons.
A) tectonic activity
B) rotation
C) tilt
D) water cycle
  • 17. What planet is known as the red planet?
A) Venus
B) Earth
C) Mars
D) Mercury
  • 18. How many moons does Mars have?
A) 3
B) 2
C) 8
D) 4
  • 19. What does the wind on Mars cause?
A) seasons
B) hurricanes
C) dust storms
D) rocks
  • 20. Even though no water has been found on Mars, scientists have discovered _____.
A) polar bears and penguins
B) constant wind
C) ice caps at the poles
D) iron
  • 21. What is the difference between the two hemispheres on Mars?
A) one rotates faster than the other
B) one gets rain; one does not get rain
C) one is a flat, plains area; one has craters and highlands
D) one has life; one does not have life
  • 22. Mars' rate of rotation is _____ Earth's.
A) opposite of
B) similar to
C) colder than
D) warmer than
  • 23. Our group of rocky planets are ______.
A) moving closer to the sun.
B) the farthest from the sun
C) closest to the sun.
D) moving away from the sun.
  • 24. The fastest orbiting planet is _____.
A) Earth
B) Venus
C) Mars
D) Mercury
  • 25. Which planet do we live on?
A) Venus
B) Earth
C) Mercury
D) Mars
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