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