41 terms

# Solar System

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Geocentric Model
Earth is at center of solar system
Heliocentric Model
Sun is at center of solar system
Copernicus
Astronomer who proposed heliocentric model
Ptolemy
Astronomer who proposed the geocentric model
Kepler
Had three laws of planetary motion
Kepler's first law of planetary motion
The orbit of planets is an ellipse
Kepler's second law of planetary motion
If you increase the distance from the sun, the planet moves slower.
Kepler's third law of planetary motion
If you increase the distance from the sun, it will increase the time to move around the sun.
Newton's 1st Law of Motion
If an object is moving at a constant speed, then it will continue to move at constant speed unless acted upon by an outside force.
Newton's 2nd Law of Motion
Acceleration = F/M
Newton's 3rd Law of Motion
For every action, there is an equal and opposite reaction.
If the masses of two objects increase, then the force of gravity between the two objects will
increase
If the force with which you push an object increases, then the acceleration of that object will
increase
If the mass of an object increases and the force on that object remains the same, then the acceleration of that object will
decrease
Mass
Amount of matter in an object
Weight
The force of gravity on an object
Acceleration Equation
A = F/M
Would you weigh more or less on a planet with a larger mass?
v
Would you weigh more or less on a planet with a smaller mass?
less because the planet has a smaller gravitational pull on you than earth
Planets that weigh more
Jupiter, Saturn, Neptune
Planets that weigh less
Mercury, Venus, Mars, Uranus
Shape of a planet's orbit
ellipse
Planet with the slowest speed
Neptune
Neptune has the slowest speed because
it has the weakest gravitational attraction between the sun and planet.
Planet with the fastest speed
Mercury
Mercury has the fastest speed because
it has the strongest gravitational attraction between the sun and the planet
Four inner planets
Mercury, Venus, Mars, Earth
Four outer planets
Saturn, Jupiter, Uranus, Neptune
Difference between inner and outer planets
The inner planets are small, solid, and have no rings. The outer planets are large, gaseous, and have rings
Location of asteroid belt
Between Mars and Jupiter
Location of Kuiper Belt
Outside Neptune's orbit
Name a planet that is considered a dwarf planet
Pluto
Meteoroid
Rock or fragment traveling in space
Meteor
Meteoroids pass through atmosphere
Meteorite
Meteoroid reaches Earth's surface
Difference between meteoroid, meteor, and meteorite
The location of the object
Crater
Large hole at the Earth's surface created by a meteorite or asteroid
Kuiper Belt
Comet or ecliptic plane
Oort Cloud
Further long period comets
decreases
If the two objects move further apart, what happens to the force of gravity between the two objects?
If the force with which you push an object decreases, then the acceleration of that object will__________________
Decrease