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Comparing and contrasting Earth, Mars and Venus

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by

Aitor Gomez

on 9 November 2014

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Transcript of Comparing and contrasting Earth, Mars and Venus

Comparing and contrasting Earth, Mars and Venus
Introduction
Milky Way
Is the galaxy where our Solar System is located
Solar System
Is five million years old
Mars
It is made up of eight planets
EARTH
Venus
Size
Presence of landmasses and/or oceans
Atmosphere, thickness and composition

Atmosphere
Thickness
Composition
Spin and Orbit
Spin
Orbit
Composition of the rocky planet:

Layers
Presence of life
Surface structures/features
SIZE
Circumference:
Diameter:
Volume:
Presence of landmasses and/or oceans
Size
Mars has a total volume of:
163,180,000,000 km³
Volume:
928.430.000.000 km³
Diameter:
12.103,6 km
Circumference:
38.025 km

Like all planets in our solar system,
the Earth is in an elliptical orbit
around our Sun.
Mass
This is the length of the circunference of Mars: 21,344 km
The total mass Venus has is:
4.867.600 trillions kg
The length of the diameter of Mars is the next one: 6,779 km
Atmosphere
It takes roughly 365 days for the
Earth to go around the Sun once.
In Mars there is one landmass
But it hasn't been proved if there are oceans
Thickness
15,4 km
Atmosphere, thickness and composition

Pressure
92 bars
Earth's rotation is the rotation
of the solid Earth around its own
axis. The Earth rotates from the
west towards the east.
The Earth rotates once in about
24 hours with respect to the Sun.
Is a mixture of nitrogen (78%),
oxygen (21%), and other gases (1%)
that surrounds Earth.
The atmosphere is an important part
of what makes Earth livable.
Earth's solid mass is about 32% iron,
30% oxygen, 15% silicon, 14% magnesium,
3% sulfur, 2% nickel, 1.5% calcium, and
1.4% aluminum.
Crust
Mantle
Outer and Inner core
From 35-70 km thick
in the continents and
5-10 km thick in the
ocean basins
It is about 2900 km thick, and is separated into the upper and lower mantle
The outer core is 2300 km thick and the inner core is 1200 km thick
In the Earth, there is life. What we know is, that the Earth, is the unique planet with life in it.
Crust
Outer and Inner core
Mantle
From 35-70 km thick
in the continents and
5-10 km thick in the
ocean basins
It is about 2900 km thick, and is separated into the upper and lower mantle
The outer core is 2300 km thick and the inner core is 1200 km thick
Main elements
Crust
Outer and Inner core
Mantle
Is composed mainly
of alumino-silicates
It is composed mainly of ferro-magnesium
silicates
The Earth's surface is composed of rigid
plates that move relative to each other
The plates have three main motions,
and each one has different results
Landmasses
Oceans
Pacific Ocean
Atlantic Ocean
Indian Ocean
Arctic Ocean
Southern Ocean
Europe
Asia
North America
South America
Africa
Antarctic
Atmosphere
Is a mixture of carbon dioxide(96%), argon(2,1%), nitrogen(1,9), oxygen(0,145%) and carbon monoxide(0,0557%)
Thickness
Crust:
Is 100km in
south and 30
km in north

Mantle:
Maybe is layered
Outer core:
Is 1,300-1,500km
thick
Inner core:
Is 3,389km
thick
Composition
Crust:
Is composed
of similar rocks
of the Earth
Mantle:
Is made of silicate
rock
Core:
Is made of iron, nickel
and sulphur
Spin and orbit
Spin
Mars rotates from west towards the east
Mars, rotates once in about 24 hours and 39 minutes respect to the Sun
Orbit
Like all planets in our solar system,
the Earth is in an elliptical orbit
around our Sun
To Mars it cost 387 days to go around the Sun once
Composition of the rocky planet
Crust:
Is 100km in
south and 30
km in north
Layers
Mantle:
Maybe is layered
Outer core:
Is 1,300-1,500km
thick
Inner core:
Is 3,389km
thick
Main elements
Crust:
Is composed of
iron and basaltic
rocks
Mantle:
Is composed of silicate
Cores:
Is made of iron
and sulphides

Presence of life
It is no proved if in Mars has life
Surface structure/features
Mars is the red planet couse
the surface is made of iron dust and rocks of the same colour
Composition
Major composition:
96,5% carbon dioxide
3,5% nitrogen
Minor composition (ppm):
Sulfur Dioxide-150; Argon-70; Water-20; Carbon Monoxide-17; Helium-12; Neon-7
Spin and Orbit
Spin:
A day lasts as 243 Earth days
Spins in a clockwise direction (most of the planets spin in a counterclockwise direction)

Orbit:
A year lasts 224 Earth days
Internal structure
There isn't many information about the internal structure of Venus, but because Venus and the Earth have similar sizes, it's supposed that they have the same structure: a crust, a mantle, and a core of about 3000 km(scientists think it's made of Fe and Ni), but their components are still unknown.
Surface features/Oceans
Venus it's completely made by a landmass, but it has two main plateaus, that are like continents: Ishtar Terra and Aphrodite Terra. Doesn't have any oceans, because the high temperatures.
Presence of life
The life as we know is impossible in Venus, due to the high temperatures (almost 500º Celsius) and the atmospheric pressure, 90 times higher than Earth's
Is composed mainly of nickel and iron
Is the unique planet with life in it because of
these three reasons:
Our planet is in the right distance from
the Sun
In the atmosphere, there are very important gase, such as oxygen and nytrogen
There is water on it
SIMILARITIES & DIFFERENCES:
SIMILARITIES:
Venus & Earth are the same size.
All of them have an atmosphere.
All of them are rocky.
DIFFERENCES:
Mars is 1/3 as Venus & Earth (comparing on size).
Mars is much colder than the other two planets.
Distance from the sun is different in all of them.
Circumference:
40.075 km
Diameter:
12.742 km
Volume:
1.083210000000 km³
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