Historical Models
Gravity
Sun
Planets
Small Bodies & Misc.
100
This model of the solar system is sun centered.
What is heliocentric?
100
These factors affect the force of gravity.
What is mass and distance?
100
This is the innermost layer of the sun
What is the core
100
This planet has a very thick atmosphere
What is venus
100
these are shooting stars
What is meteors
200
Early theorists used this type of model
What is geocentric?
200
To increase the gravitiational force you need to do this to the distance when mass increases.
What is decrease
200
This layer is what produces light
What is photosphere
200
this planet very cold at night and hot during the day
What is mercury
200
These objects range in size from a grain of sand to a large bolder.
What is a meteoroid
300
This theorist idea of the sun being stationary was accepted
Who is Copernicus?
300
This law explains that planets will move faster when closer to the sun than farther.
What is Kepler's second law
300
This the cooler, darker areas on the sun.
What is sunspot
300
this planet is on its side
What is uranus
300
These objects have an irregular orbit and is small
What is dwarf planet
400
This theorist deteremined that planets revolved around the sun in ellipses.
Who is Kepler?
400
This is the closest point to the Sun during an orbit.
What is aphelion
400
Heat is transfered by these two ways.
What is radiation and covection
400
This seperates the outer planets from the inner planets
What is the asteroid belt
400
This object has the fastest orbital speed and loses gas and dust
What is a comet
500
This explains that the positions of the stars changed as Earth moved.
What is parallax?
500
This law explains time of orbit of a planet
What is Kepler's third law
500
This area of the sun rotates the slowest
What is the poles
500
Rocks and metals makes these planets
What is terrestrial
500
The sun is mostly made of this gas
What is hydrogen
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