Yuvika's Space Quiz

How many moons does Mercury have?

• 0 moons

• 1 moon

• 2 moons

• 3 or more moons

Answer explanation

Mercury does not have any moons.

Mercury's 1 day is _____________ 1 Earth day

• Shorter than

• Longer than

• Same Duration as

Answer explanation

It takes 59 Earth days for Mercury to take a spin (rotate). It is slow!

It takes 88 Earth days for it to revolute. If we lived on Mercury, we would have a birthday every 3 months. How cool, eh?!

Which of these are true facts about Venus?

• It has sulfuric acid clouds and an atmosphere

• It has 1 moon

• 1 day is longer than 1 year

• Venus is the hottest planet in the solar system

• Venus rotates in the opposite direction of most planets

Answer explanation

Venus does not have any moons!

It takes 243 Earth days to spin around just once. It takes 225 Earth days for Venus to go around the sun. That means that a day on Venus is a little bit longer than a year on Venus.

Now we know that Venus is the hottest planet. Why is Mercury not hotter when it is closer to the Sun?

• Venus is hotter because of the sulfuric acid clouds

• Venus is hotter because of it's atmosphere

• Venus is hotter because it's size is bigger

• Venus is hotter because it has a lot of volcanoes

Answer explanation

Even though Venus isn't the closest planet to the sun, it is still the hottest. It has a thick atmosphere full of the greenhouse gas, carbon dioxide and sulfuric acid clouds. The gas traps heat and keeps Venus toasty warm. In fact, it's so hot on Venus, metals like lead would be puddles of melted liquid.

But, Venus is an active planet and does have a lot of mountains and volcanoes!

What percentage of place on Earth is water and how much is land?

• 47% Water, 53% Land

• 70% Water, 30% Land

• 82% Water, 18% Land

Answer explanation

Earth is an terrestrial, rocky planet. It is special because it is an ocean planet. Water covers 70% of the surface.

How many hours does it take on Mars to complete 1 day?

• 24 Earth hours

• 25 Earth hours

Answer explanation

Earth and Mars have the same day length.

Why is Mars red?

• Because of some rocks of different material

• Because it is made of rusty iron

• Because of it's place in space

Does Mars have an Atmosphere? If yes, what size?

• No, it does not

• Yes, it's very thin

• Yes, it's medium size

• Yes, it's very thick

Answer explanation

Mars has a very thin atmosphere made of carbon dioxide, nitrogen, and argon.

Mars has an active atmosphere, but the surface of the planet is not active. Its volcanoes are dead.

Does Mars have moons? If yes, how many?

• No, Mars has no moons

• Yes, Mars has 1 moon

• Yes, Mars has 2 moons

• Yes, Mars has 3 or more moons

Answer explanation

Mars has two moons. Their names are Phobos and Deimos.

Jupiter does not have a ring. True or false?

• True

• False

Answer explanation

Jupiter also has rings, but they're too faint to see very well.