Test your knowledge of the Solar System 1 / 10 Which planet rotates on its side? Venus Saturn Neptune Uranus 2 / 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 observing its magnetic field. By studying its atmosphere. By measuring its size. 3 / 10 Which planet is known for its extreme greenhouse effect? Neptune Mars Earth Venus 4 / 10 What causes the variation in planetary magnetic fields within the solar system? Variations in solar wind pressure. Differences in the planetary core compositions and their rotational speeds. The distance from the Sun. The planet's atmosphere. 5 / 10 What is the Sun mostly made of? Hydrogen and helium Iron and nickel Oxygen and nitrogen Carbon dioxide 6 / 10 What is the smallest planet in the solar system? Venus Mars Pluto Mercury 7 / 10 Which planet has the most moons? Uranus Earth Jupiter Saturn 8 / 10 What is a comet? A meteor A planet’s moon 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 name of the largest moon of Saturn? Callisto Titan Ganymede Europa 10 / 10 Which planet has the Great Red Spot, a giant storm? Mars Jupiter Saturn Neptune Your score isThe average score is 50% 0% Restart quiz