Test your knowledge of the Solar System 1 / 10 Which planet rotates on its side? Neptune Uranus Saturn Venus 2 / 10 Which planet has the most moons? Uranus Jupiter Saturn Earth 3 / 10 Which planet has the Great Red Spot, a giant storm? Mars Jupiter Saturn Neptune 4 / 10 What causes the variation in planetary magnetic fields within the solar system? The planet's atmosphere. Differences in the planetary core compositions and their rotational speeds. The distance from the Sun. Variations in solar wind pressure. 5 / 10 What is a comet? 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 A planet’s moon 6 / 10 What is the Sun mostly made of? Iron and nickel Hydrogen and helium Oxygen and nitrogen Carbon dioxide 7 / 10 What is the name of the largest moon of Saturn? Ganymede Titan Europa Callisto 8 / 10 What is the smallest planet in the solar system? Mars Venus Pluto Mercury 9 / 10 Which planet is known for its extreme greenhouse effect? Mars Neptune Venus Earth 10 / 10 How do astronomers measure the mass of a planet in the solar system? By measuring its size. By observing its magnetic field. By studying its atmosphere. By observing the gravitational effects the planet has on nearby objects, like moons or spacecraft. Your score isThe average score is 90% 0% Restart quiz