Mercury, Venus, and Mars

Front

What is the strength of the gravitational pull on Mars?

Back

1/3 of Earth's gravity.

Front

How many moons does Mercury have?

Back

0.

Front

Which planet is the hottest in our solar system?

Back

Venus.

Front

Why is Venus referred to as Earth's twin?

Back

Because of its similar size.

Front

A year on Mars is almost ___________ times as long as a year on Earth.

Back

Twice.

Front

What is the average surface temperature of Venus?

Back

About 467 degrees Celsius.

Front

What is the primary component of Mercury's atmosphere?

Back

Almost none; it has a very thin atmosphere.

Front

Which planet has the longest day relative to its year?

Back

Venus.

Front

What is the main reason Mars appears red?

Back

Iron oxide (rust) on its surface.

Front

What is the distance from the Sun to Mars?

Back

About 227.9 million kilometers.