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The Planets

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by

Rick Vance

on 7 December 2011

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Transcript of The Planets

Our Solar System
The Sun
Mercury
*Closest planet to the Sun

*No moons

*No seasons; axis does not tilt

*Temperatures range from -270 to 800 degrees (F)

*Small, rocky planet with surface similar to our moon
*Medium-sized yellow star; only star in solar system

*closest star to Earth

*Sun's light is source of energy for life on Earth

*largest object in our solar system

*Surface temperature about 9000 degrees F

*has an enormous mass; very strong gravity
Venus
*hottest planet at temperature of 870 degrees (F)

*95% of Earth's size

*67,000,000 miles from the Sun

*has no moons

*one rotation on its axis takes 224 Earth days

*named after the Roman goddess of love
*about half the size of Earth

*dry, rocky surface w/very thin atmosphere

*north and south poles covered by ice caps

*has 2 tiny moons: Phobos and Deimos

*141,000,000 miles from Sun

*much colder than Earth w/ average temp of -81 degrees (F)
*largest planet in solar system

*all other planets could fit inside Jupiter!

*over 1,000 Earths could fit inside Jupiter!

*has 63 known moons

*composed mostly of gas

*takes almost 12 Earth years to orbit the Sun

*average temperature -244 degrees (F)
*second largest planet; 764 Earths could fit inside Saturn

*has rings made of mostly of ice chunks and some rocks

*1,503,000,000 miles from the sun

*mean temperature of -290 degrees (F)

*62 discovered moons (so far)

*one rotation on its axis (day) takes 10.2 hours
*giant, fridgid planet with hazy atmosphere and strong winds

*gas giant with 8 moons

*blue color caused by methane in its atmosphere

*if hollow, could hold almost 60 Earths

*takes 164 years to orbit the sun

*4,546,000,000 miles from the Sun

*seasons last about 40 years on Neptune!
*icy planet covered with clouds

*has 11 rings and 22 known moons

*rotates on its side

*4 times the diameter of Earth

*day is 17.9 Earth hours; year is 84 Earth years

*1,850,000,000 miles from the Sun

*temperature of -350 degrees (F)
Mars
Earth
Jupiter
Saturn
Neptune
Uranus
Moon
*sometime's referred to as "satellite of Earth"

*moon's gravity causes tides on Earth

*238,900 miles from Earth

*temperatures range from -170 to 265 degrees (F)

*phases caused by changing positions of Earth and the moon as they travel around the Sun
*one day on Earth takes about 23.9 hours

*one year takes 365.26 days

*Earth's axis tilt of 23.5 degrees causes seasons

*At the equator, Earth's rotation speed is about 1040 miles per hour

*atmosphere is Nitrogen (78%), Oxygen (21%) and other gases

*life on Earth depends mostly on the Sun's light

*only planet known to have liquid water
Solar System
*sun and family of 8 planets

*inner planets and outer planets separated by an asteroid belt

*inner planets are rocky; outer planets are gas giants

*planets closest to the Sun have the shortest orbits

*asteroids, comets, meteroites, planets, moons, satellites

*planets orbit (revolve around) the sun which makes them change positions in the sky

*stars do NOT move in space
Inner (terrestrial) Planets
*rocky surface
*smaller in size
*closest to sun
*shorter orbits
*few or no moons
Outer (jovial) Planets
"Gas Giants"
Full transcript