Where does Mercury rank in distance from the Sun? Choices: Second, First, Third, Fourth
About how long is a year on Mercury? Choices: 225 Earth days, 365 Earth days, 88 Earth days, 687 Earth days
How many moons does Mercury have? Choices: None, One, Two, Four
About how hot does the daytime side of Mercury get? Choices: About 100°C, About 430°C, About 250°C, About 900°C
What does Mercury's surface look most like? Choices: Earth's oceans, Mars's red deserts, Earth's Moon, Jupiter's clouds
What is Mercury's core mostly made of? Choices: Hydrogen and helium, Water ice, Granite, Iron
What is Mercury's very thin atmosphere called? Choices: Stratosphere, Exosphere, Ionosphere, Troposphere
About how wide is Mercury? Choices: About 4,900 km, About 1,200 km, About 12,700 km, About 3,500 km
About how cold does the night side of Mercury get? Choices: About 0°C, About -50°C, About -180°C, About -270°C
What was Mercury's surface mostly shaped by? Choices: Flowing rivers, Space rock impacts, Strong winds, Moving plates
What is the shrinking of Mercury's crust as its interior cools called? Choices: Continental drift, Erosion, Tidal locking, Global contraction
What are the long cliffs on Mercury's surface called? Choices: Rift valleys, Sand dunes, Lobate scarps, Mesas
What does Mercury look like from Earth? Choices: A bright dot near the horizon at dawn or dusk, A large red disc high in the midnight sky, A glowing ring around the Moon, A streak of light crossing the sky
What kind of planet is Mercury? Choices: Gas giant, Ice giant, Dwarf planet, Terrestrial (rocky)
What is the name of the type of feature that covers most of Mercury's surface? Choices: Volcanic mountain chains, River valleys, Craters, Sand dunes