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162 terms

Planet Characteristics

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Who created the first planetary model
Ptolemy
What did Ptolemy Think?
The earth was the center of the solar system, and all objects revolved around the earth
Geocentric Theory
The belief that the earth is the center of the solar system
Heliocentric Theory
The belief that the sun is the center of the solar system
Copernicus
Polish Astronomer who developed the Heliocentric theory
When did Copernicus develop the heliocentric theory
1543
Tyco Brahe
Danish Astronomer who aimed to disprove Copernicus and the heliocentric theory
What did Brahe believe
That the sun revolved around the earth
Johannes Keppler
the former assistant of Tyco Brahe, who disagreed with Brahe, devised the laws of planetary motion and created the most accurate solar system to date
Galileo Galilei
The first astronomer to use a telescope and to observe the moons of jupiter, and observe the phases of venus
Sir Isaac Newton
Devised the laws of gravity in 1687, and proved kepler's law of planetary motion.
Mercury's nickname
"The morning, evening star" because it can only be seen at dawn or dusk
The hottest planet
Venus
What planet has the most poisonous atmosphere
Venus
Second hottest planet
Mercury
Second smallest planet
Mercury
Does Mercury have an atmosphere
No
Earths twin in size
Venus
Venus's nickname
morning evening star
Earths nickname
The Blue Planet
the only planet to have life and water
Earth
Mars' nickname
The red planet
The Fastest Rotator
Jupiter
Earth's twin in size
Mars
What does Mars have
polar caps
Jupiter's nickname
the red planet
The shortest day
Jupiter
What planet has the most satellites?
Jupiter
What kind of a planet is Saturn
Gas Giant
The Most distinct Ring System
Saturn
The least dense of planets
Saturn
What kind of a planet is Uranus
Gas Giant
What kind of ring system does Uranus have
a lateral ring system
What color is Uranus
aquamarine
what is the dominant gas in Uranus's atmosphere
Methane Gas
Neptune's nick name
the blue planet
What kind of a planet is neptune
gas giant
what planet has a famous blue spot
Neptune
The smallest planet
Pluto
The farthest away planet
Pluto
the coldest planet
Pluto
Inner Planets
Mars, Venus, Earth, Mercury
Outer Planets
Jupiter, Saturn, Uranus, Neptune, Pluto
Inferior Planets
Mercury, Venus, Earth
Superior Planets
Mars, Jupiter, Saturn, Uranus, Neptune, Pluto
Terrestrial Planets
Mars, Venus, Earth, Mercury, Pluto
Jovian Planets
Jupiter, Saturn, Uranus, Neptune
Minor Planets
Mars, Venus, Earth Mars, Pluto
Major Planets
Jupiter, Saturn, Uranus, Neptune
First law of planetary Motion
All planets orbit in ellipse
Second law of planetary motion
Equal area in equal time
third law of planetary motion
period of revolution squared = distance from the sun (in AUs) cubed
The Solar System consists of the following classes of bodies:
1) The Sun
2) The Planets
3) The Stars
4) Satellites
5) Comets
6) Asteroids
Diameter of the sun
864,000 miles
the source of the suns heat
fusion reactions
the light of the sun comes from the...
photoshpere
How many planets are there in the solar system
Nine
Satellites
small bodies that revolve or orbit around some of the planets
earth's satellite
The moon
What two planets have no satellites?
Mercury and Venus
Where is the asteroid belt located
between Mars and Jupiter
Another name for asteroid
planetoid
The diameter of the largest planetoid
500 miles
what does every planetoid revolve around
it's own orbit
The head of a comet
a coma
comet
a hazy, cloud like object with a head, and a tail that always points away from the sun .
the tail of a comet increases in length
as the comet approaches the sun
The Kuiper Belt
Where closed orbit comets originate
Oort cloud
where open orbit comets originate
Halley's comet returns every
75 years
comets that travel in closed orbits
remain with the solar system
comets that travel in open orbits
are considered visitors to the solar system
A name frequently given to meteors
shooting stars
what are meteors
masses of rock and metal wandering through space until attracted to the earth by gravity
When do we see a meteor
when they reach our atmosphere
Why are meteors visible only for an instant
because the friction in the air causes them to either explode or burn up.
Meteorite
a meteor that manages to go through earth's atmosphere, and lands on earth
What two metals are meteorites made of?
iron and nickel
During what months do meteor showers take place
August, October, November, December
Aerolite
meteorites made of rock
siderite
meteorites made of metal
Earths diameter
8000 miles
The diameter through the poles is _______ than the diameter through the equator by about 27 miles
less
oblate spheroid
flattened at the poles
Why is earth an oblate spheroid
because of centrifugal force
centrifugal force
an apparent force caused by the rotation of the earth
where is centrifugal force the greatest
the equator
Transit
an planet or object that passes between the earth and the sun
how many satellites does Jupiter have
63+
How many satellites does Mars have
2
How many satellites does Saturn have
31+
How many satellites does Uranus have
25
Why does Jupiter have an oblate shape?
because of it's rapid rotation
When was Pluto discovered
1930
Who discovered Pluto
Percius Lowel
Who discovered Saturn
Cassini and Galileo
When was Saturn discovered?
1675
Who discovered Uranus
W. Herschel
When was Uranus discovered?
1781
Who discovered Neptune
Galle
When was Neptune discovered?
1846
How far away is Mercury in AUs
.39
Venus is _______ AUs away
.72
Earth is ______ AU(s) away
1
Mars is _____ AU(s) away
1.5
Jupiter is _____ AU(s) away
5.2
SATURN IS _____AU(s) away
9.5
Uranus is _______ AU(s) away
19.2
Neptune is ______ AU(s) away
30
Pluto is _______ Au(s) away
40
1 AU = ________ miles
93,000,000
1 AU = _______ Kilometers
150,000,000
Diameter of mercury (miles)
3100
Diameter of Venus (miles)
7600
Diameter of mercury (kilometers)
4800
Diameter of Venus (kilometers)
12,000
Diameter of Earth (miles)
8000
Diameter of earth (kilometers)
12,800
Diameter of Mars (miles)
4,200
Diameter of Mars (kilometers)
6,800
Diameter of Jupiter (miles)
89,000
Diameter of Jupiter (kilometers)
143,000
Diameter of Saturn (miles)
75,000
Diameter of Saturn (kilometers)
120,000
Diameter of Uranus (miles)
32,000
Diameter of Uranus (kilometers)
51,500
Diameter of Neptune (miles)
25,000
Diameter of Neptune (Kilometers)
49,500
Diameter of Pluto (miles)
1,600
Diameter of Pluto (Kilometers)
2,400
How many satellites does Earth have
one
How many satellites does Neptune have
13
How many satellites doe Pluto have
1
Mercury's period of rotation
59 days
Mercury's period of revolution
88 days
Venus's period of rotation
244 days
Venus's period of revolution
225 days
Earth's period of rotation
24 hours
Earth's period of revolution
365 days
Mars's period of rotation
24-1/2 hours
Mars's period of revolution
687 days
Jupiter's period of rotation
10 hours
Jupiter's period of revolution
12 years
Saturn's period of rotation
10.2 hours
Saturn's period of revolution
24-1/3 years
Uranus's period of rotation
17.2 hours
Uranus's period of revolution
84 years
Neptune's period of rotation
16 hours
Neptune's period of revolution
165 years
Pluto's period of rotation
6-1/2 days
Pluto's period of revolution
248 years
Mercury's axis tilt
0 degrees
Venus's axis tilt
2 degrees
Earth's axis tilt
23-1/2 degrees
Mars's axis tilt
24 degrees
Jupiter's axis tilt
3 degrees
Saturn's axis tilt
24 degrees
Uranus's axis tilt
98 degrees
Neptune's axis tilt
29 degrees
Pluto's axis tilt
unknown degrees
What are the only two planets that revolve clockwise
Uranus and Venus
All planets other than Uranus and Venus rotate
counter clockwise