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Solar System - Coggle Diagram
Solar System
Outer Planets
Gas Giants
Jupiter
Movement
orbit
Saturn
Uranus
Neptune
Inner Planets
Four Planets
Mercury
no moons
smallest planet
closest to the Sun
this makes it hard to study from Earth
spacecraft have gone to study it
Surface
craters like the Moon
no atmosphere or tectonic plates; very little change to structures
Movement
orbit is 88 Earth days
rotation is 57 Earth days
Atmosphere
extremely hot and cold depending on direction it is facing
extremely dry
may be ice at the poles where there is no sunlight
Venus
no moons
Motion
rotation is longer than orbit
rotates opposite of the other planets
rotation is 243 Earth days
revolution is 224 Earth days
Atmosphere
thick acidic louds
hot because of greenhouse effect
hottest planet
Surface
has mountain, volcanoes, and canyons
no plate tectonics
Earth
Surface
surface comprised of rock and liquid
atmosphere filters out harmful radiation
Structure and Plate Tectonics
made of plates that shift because of Earth's molten core
movements cause Earthquakes, Volcanoes, and Mountains
only planet known to have plates
Life
only known planet with life
Motions and Satellites
one rotation per day
orbits Sun every 365.4 days
the Moon orbits Earth every 29.5 days
only inner planet that has a large moon orbiting it
Mars
Surface
has mountains, volcanoes, and canyons
red because of minerals
has ice
closest to Sun
terrestrial planets
cooled igneous rock
no rings
Extrasolar Planets
direct modes of indentification
pictures
indirect modes of identification
stars moving toward and away from us periodically
measuring a stars brightness over time
planets orbiting stars other than our Sun
Creation
Clues
planets lie in similar plane
planets orbit in same direction around Sun
Nebular Hypothesis
most accepted
formed from the collapse of a nebula
as it collapsed it started spinning and it gained speed
the formation of the Sun stopped further collapse
Explains
planets on same plane
revolving in same direction
rotate in same direction
age of oldest parts
4.6 billion years ago
Formation of Sun and Planets
planetesimals formed as everything cooled down
the planetesimals formed protoplanets into planets
Motions of Planets
astronomical units
distance from the Earth to the Sun
repped as AU
1 AU=150 million km/93 million miles
Gravity
Isaac Newton
strength depends on amount of mass in objects and distance between them