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