The Solar System - Planets

Front

What is the solar system made up of?

Back

The solar system consists of the Sun, planets, moons, and asteroids.

Front

What defines a planet?

Back

A planet is a large natural object that orbits a star.

Front

What are the four inner planets?

Back

Mercury, Venus, Earth, and Mars.

Front

What is unique about Mercury's day-night cycle?

Back

One day-night cycle on Mercury takes 175.97 Earth days.

Front

What is the temperature range on Mercury?

Back

Daytime temperatures can reach 430 degrees Celsius and drop to -180 degrees Celsius.

Front

What is Venus known for?

Back

Venus is similar in size to Earth and has a thick, toxic atmosphere.

Front

How long does a day on Venus last?

Back

One day on Venus lasts 243 Earth days.

Front

What is Earth’s atmosphere made up of?

Back

Earth's atmosphere is 78% nitrogen, 21% oxygen, and 1% other gases.

Front

What is Mars known as?

Back

Mars is known as the Red Planet.

Front

What are the two moons of Mars?

Back

Phobos and Deimos.