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