What did the ancient Romans symbolize the planet Mars with?

• A) Love and beauty
• B) Blood and war
• C) Wisdom and knowledge
• D) Wealth and prosperity

How long ago did Mars begin to form?

• A) About 1 billion years ago
• B) About 2.5 billion years ago
• C) About 3.5 billion years ago
• D) About 4.5 billion years ago

What is the diameter of Mars compared to?

• A) The width of North America
• B) The width of Africa
• C) The width of Europe
• D) The width of Asia

What is the composition of Mars' core?

• A) Mostly water and ice
• B) Iron, nickel, and sulfur
• C) Carbon and hydrogen
• D) Silicate minerals

What is the largest volcano in the solar system located on Mars?

• A) Kilauea
• B) Mauna Loa
• C) Olympus Mons
• D) Mount Everest