The Inner Planets

Front

What are the inner planets?

Back

The inner planets are the four planets closest to the Sun: Mercury, Venus, Earth, and Mars.

Front

Which planet has water found only in its polar caps?

Back

Mars.

Front

Which planet rotates in the opposite direction compared to most planets?

Back

Venus.

Front

How many inner planets are there?

Back

There are 4 inner planets.

Front

Which two inner planets are known as 'sister planets'?

Back

Venus and Earth.

Front

Which planet is the hottest in the inner solar system?

Back

Venus.

Front

What is the primary component of Venus's atmosphere?

Back

Carbon dioxide.

Front

Which inner planet has the longest day?

Back

Venus has the longest day, taking about 243 Earth days to rotate once.

Front

What is the surface temperature of Mercury?

Back

Mercury can reach temperatures of up to 800°F (427°C) during the day.

Front

Which inner planet is known for having the most craters?

Back

Mercury is known for having the most craters.