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Solar System Unit
Key Vocabulary
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Asteroids – Irregular large pieces of rock that move
through space; found between Mars and Jupiter.
Comets – Objects made up of ices, dust, and gases
that orbit the sun in a large, elliptical orbit; a “dirty
snowball.”
Distance – A measure of the amount of space
between objects.
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Gravity – The attraction of one mass to another.
Inference – A conclusion reached on the basis of
evidence and reasoning.
Mass – The amount of matter in something.
Meteor – The streak of light produced by a small
piece of matter in space that is visible when it falls
into Earth’s atmosphere.
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Meteoroid – The small piece of matter when it is in
space.
Meteorite – A meteor that falls to the surface before
burning up in the atmosphere.
Planet – A celestial object, larger than asteroids or
comets that revolve around a star without giving off
its own light.
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Satellite – A natural or man-made object that revolves
around larger objects in space.
Scale – Objects compared to a standard for accurate
size perception.
Solar System – The the system made up of the
eight unique planets, and many smaller objects that
orbit the Sun.
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Stars – Celestial objects that consist of gases, which
are so massive that fusion within their cores generate
light and heat.
Sun – The star in our Solar System that sustains most
life on Earth and is the primary source of heat and
light.
Telescope – An instrument that gathers light and
magnifies, or makes distant objects appear larger.
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Rotation – When a planet or moon turns all the way
around or spins on its axis one time.
Source: Mrs. Pardington's Class Wiki Page
Click Here for Rotation Video
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Revolution – The circling of one object around
another object in space. A planet revolves around the
sun. A moon revolves around a planet.
Click here for revolution video.
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Inner Rocky Planets
Mercury
Venus
Earth
Mars
ESA
NASA
Hubblesite
NASA
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Inner Rocky Planets
Planets are made of rocky material.
Planets are the nearest to the Sun.
Planets are from 3,000 to 8,000 miles in diameter.
Planet “day” last from 24 hours to 245 days.
Planet “year” last from 88 days to 2 years.
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Outer Gas Giant Planets
Jupiter
NASA
Saturn
NASA
Uranus Neptune
Hubblesite
NASA
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Outer Gas Giants
Planets are made of gaseous material.
Planets are the farthest from the Sun.
Planets are from 31,000 to 87,000 miles in diameter.
Planet “day” last from 10 hours to 17 hours.
Planet “year” last from 12 years to 165 years.
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The Presentation
Ends Here.
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