Mars vs. Earth

By:Mariesa G.

andBrittany G.

Temperature

Mars:• Mars is a cold planet with

an average of -63°C.• The temperature on Mars

ranges from a low of -140°C to a high of 20°C.

• Mars is so cold that ice freezes over its poles

Earth:• The earth’s temperature

ranges from -127°F to 136°F ( -88°C to 58°C ).

• Heat is trapped inside our atmosphere, thanks to the greenhouse effect.

Air Pressure

Mars:• Mars has an air

pressure of 6 kPa.• That is the equivalent

of 6 millibars.

Earth:• Earth has an air

pressure of 32.06 inches of Mercury.

• ( 1085.7 Millibars ).

Atmosphere

Mars:• Mars atmosphere is

incredibly thin• The atmosphere is made

up of 95% carbon dioxide, 3% nitrogen, 1.6% argon (argon- no oxygen so humans can’t live there.

• Clouds containing carbon dioxide ice crystals are sometimes present.

Earth:• Earth’s atmosphere is

made up of 78% Nitrogen, 21% Oxygen, 0.9% Argon, 0.3% Carbon Dioxide.

Surface Conditions

Mars:• The surface of Mars is

Rocky, Frozen, and Dry.• The surface is covered in

iron-rich dust.• The northern hemisphere

has plains• On the other hand, the

southern hemisphere of mars there are craters.

Earth:• About 71% of Earth’s

surface is covered with salt water oceans.

• The other 29% of Earth’s surface is Continents and Islands.

Gravity

Mars:• Mars only has 38% of

Earths gravity.• For every hundred

pounds you weigh on Earth you weigh 38 pounds on Mars.

Earth:• The standard Gravity

on Earth is 9.80665 m/s2.

• In other words the gravity is 32.1740 Ft./s2.

Distance From the Sun

Mars:• Mars is 141.6 million

miles from the sun.• In other words…227.9

million kilometers.

Earth:• Earth is 39 Million

miles from the sun.• That’s 149,600,000

Kilometers.

Rotation in a Day

Mars:• There are 1.03 Earth

days in one rotation of Mars.

• That is, it takes 24.6 hours for Mars to rotate one day.

Earth:• Its takes the Earth

23.93 Hours to rotate around its axis.

• That’s one day on earth.

Revolutions in a Year

Mars:• It takes 687 Earth

days for Mars to orbit the sun once– Mars’s years are 687

Earth days long.

Earth:• It takes Earth 365.65

days to orbit the sun.• That’s one Earth year.

Interesting Facts!

Mars:• Mars is the most

Earth-like planet in our solar system.

• The Cydonia Mense region has rocks and other geologic figures that are aligned, looking like a human face.

Earth:• The Earth is the

closest to the sun around January 2nd. This called perihelion. Its farthest from the sun July 2nd. This is called the aphelion.

• Earth is the only planet with Plate Tectonics.