Mars

How do we know that Mars had liquid water on it's surface at one point?

It has ancient river valley networks, deltas and lakebeds, as well as rocks and minerals on the surface that could only have formed in liquid water.

How big is Olympus Mons?

It's three times taller than Earth's Mt. Everest with a base the size of the state of New Mexico.

Mars escape velocity is ____ compared to Earths escape velocity of ____.

Mars escape velocity is 18,108km/h compared to Earths escape velocity of 40,284km/h.

Why is Mars known as the "Red Planet?"

Mars is known as the Red Planet because iron minerals in the Martian soil oxidize, or rust, causing the soil and atmosphere to look red.

What is Mars largest volcano called?

Olympus Mons

What are the names of Mars Moons?

Phobos and Deimos

What is surface gravity of Mars?

Surface gravity of Mars is 3.71m/s^2

How long is a day on Mars?

24.6h

Some features suggest that Mars experienced huge floods about _______ years ago.

3.5 billion years ago

Which number planet is Mars from the sun?

4th

How many Earth days are in a Martian Year?

687

How do we know Mars once had a magnetic field?

Areas of the Martian crust in the southern hemisphere are highly magnetized, indicating traces of a magnetic field from 4 billion years ago.​

If the Sun were as tall as a typical front door, Earth would be the size of a dime, and Mars would be about as big as an _____.

Asprin Tablet

Mars atmosphere is mostly made up of _______.

Carbon Dioxide

Mars is ____ smaller than Earth.

1.9x Smaller

Gravity is ___ the gravity of Earth.

1/3rd

How long does sunlight take to reach Mars?

12.5 Seconds

How many moons does Mars have?

2

What is the equatorial circumference of Mars?

21,296.9km

What is temperature like on Mars?

The temperature on Mars can be as high as 70 degrees Fahrenheit (20 degrees Celsius) or as low as about -225 degrees Fahrenheit (-153 degrees Celsius). And because the atmosphere is so thin, heat from the Sun easily escapes this planet. If you were to stand on the surface of Mars on the equator at noon, it would feel like spring at your feet (75 degrees Fahrenheit or 24 degrees Celsius) and winter at your head (32 degrees Fahrenheit or 0 degrees Celsius).

Mars is home to the largest ______ in the solar system

Volcano