Test your knowledge of the Solar System 1 / 10 What is the name of the largest moon of Saturn? Titan Europa Callisto Ganymede 2 / 10 Which planet is known for its extreme greenhouse effect? Earth Neptune Mars Venus 3 / 10 Which planet has the most moons? Saturn Jupiter Uranus Earth 4 / 10 How do astronomers measure the mass of a planet in the solar system? By observing the gravitational effects the planet has on nearby objects, like moons or spacecraft. By studying its atmosphere. By measuring its size. By observing its magnetic field. 5 / 10 What causes the variation in planetary magnetic fields within the solar system? Variations in solar wind pressure. The distance from the Sun. The planet's atmosphere. Differences in the planetary core compositions and their rotational speeds. 6 / 10 What is the smallest planet in the solar system? Pluto Mercury Mars Venus 7 / 10 Which planet has the Great Red Spot, a giant storm? Saturn Neptune Mars Jupiter 8 / 10 What is a comet? A planet’s moon A meteor A type of asteroid A celestial object made of ice, dust, and rock that develops a glowing coma and tail near the Sun 9 / 10 What is the Sun mostly made of? Hydrogen and helium Carbon dioxide Oxygen and nitrogen Iron and nickel 10 / 10 Which planet rotates on its side? Uranus Venus Saturn Neptune Your score isThe average score is 76% 0% Restart quiz