Inner Planets Quiz: Test Your Knowledge on Mercury, Venus, Earth, and Mars

📚 Quick Study Guide

• 🌡️ Mercury: Closest to the Sun; smallest planet; heavily cratered surface; extreme temperature variations.
• ☁️ Venus: Hottest planet; dense, toxic atmosphere; retrograde rotation; similar in size to Earth.
• 🌍 Earth: Only known planet with life; abundant liquid water; nitrogen-oxygen atmosphere; one natural satellite (the Moon).
• 🚀 Mars: The "Red Planet"; thin atmosphere; evidence of past liquid water; two small moons (Phobos and Deimos).

Practice Quiz

1. What is the hottest planet in our solar system?
   A. Mercury
   B. Venus
   C. Earth
   D. Mars
2. Which inner planet is known as the "Red Planet"?
   A. Mercury
   B. Venus
   C. Earth
   D. Mars
3. Which inner planet has the most abundant liquid water on its surface?
   A. Mercury
   B. Venus
   C. Earth
   D. Mars
4. Which inner planet has a heavily cratered surface and extreme temperature variations?
   A. Mercury
   B. Venus
   C. Earth
   D. Mars
5. Which inner planet has a retrograde rotation?
   A. Mercury
   B. Venus
   C. Earth
   D. Mars
6. How many moons does Mars have?
   A. 0
   B. 1
   C. 2
   D. 3
7. Which inner planet is closest in size to Earth?
   A. Mercury
   B. Venus
   C. Mars
   D. None of the above