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VocabularyEarth and Space
LT: I can define important vocabulary
Credit: Katie Brown, Shuksan Middle School
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Axis (noun)
Definition: An imaginary line that goes through the center of the earth.
Sentence: The earth’s axis goes from the north pole to the south pole.
The earth tilts on its axis.
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Rotation (noun) root word =
rotate
Definition: To turn or spin around a central point or axis.
Sentence: The Earth’s rotation takes 24 hours.
Which direction does the earth rotate?
What gesture can you create that shows rotation?
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Revolution (noun) root word =
revolve
Definition: To move in a curved path around a central object, such as a star or planet.
Sentence: The Earth revolves around the sun. It makes one revolution every 365.25 days (1 year).
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What is the difference between the words “rotate” and “revolve?”
Rotate means ___________, but revolve means_________.
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Use these words: rotation, axis, revolution
The earth rotates on its central point, or
________. It makes one full ____________ on its
axis every 24 hours and one ______________
around the sun every 365.25 days.
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Orbit (noun or verb)
Definition: The curved path of an object around a central object in space.
Sentence: (noun) The comet might cross the earth’s orbit.
Sentence: (verb) The planet Mercury orbits the sun.
“Orbit” is a
thing
“Orbit” is an
action
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What’s the difference between “revolve” and “orbit?” THINK
PAIR
SHARE
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Satellite (noun)
Definition: A natural object that orbits around another object in space.
Sentence: The earth is a satellite of the sun.
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The earth is a satellite of the sun.
The sun is a satellite of the earth.
The earth orbits the sun.
We put a satellite into orbit.
Are these statements correct?Why or why not?
THINK….
THEN SHOW!
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Solar System (noun)
Definition: A system of planets or other bodies orbiting another star.
Sentence: There are eight planets in our solar system.
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Galaxy (noun)
Definition: Group of billions of stars and their planets, within the universe.
Sentence: Our solar system is located in the Milky Way galaxy.
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Universe (noun)
Definition: All matter and energy, including galaxies, solar systems, and all of the contents of space.
Sentence : Scientists love to explore the universe to learn new things about deep space.
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Which is bigger?
A solar system?A galaxy?The universe?
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Star (noun)
Definition: A sphere of hot glowing gases that releases energy in the form of heat and light.
Sentence: When the sky is clear, you can see many stars.
They look like this!
Not like this!
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Planet (noun)
Definition: A massive, spherical (circular) space object that orbits a star.
Sentence: Two planets in our solar system are called Mercury and Venus.
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Comet (noun)
Definition: A mass of frozen gas, cosmic dust, ice crystals, and organic material that orbits the sun.
Sentence: The light of a passing comet is exciting to watch.
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Asteroid (noun)
Definition: A mostly rocky object that orbits the sun.
Sentence: Many people want to know what would happen if a large asteroid hit the earth.
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Meteoroid (noun)
Definition: A solid object moving in space that is smaller than an asteroid.
Sentence: A meteoroid that comes near earth usually breaks up in the atmosphere.
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Comparison Matrix
Orbits the Sun
A solid object
Mostly made of
ice or gas
Mostly made of
rock
Comet
Asteroid
Meteoroid
Put an “x” in the correct box
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Using the correct word
Meteoroid
A solid object
moving in space, smaller than an asteroid
MeteorThe streak
of light that is
produced when a
meteoroid burns as it enters the atmospher
e
Meteorite
A meteroid that strikes
a planet
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Meteoroid? Meteor? Meteorite? If you saw a flash of light go across the sky,
like a shooting star, it would most likely be a _________.
If you found a rock in the desert that came from space, it might be a ___________.
If you saw an object space that looked smaller than an asteroid, it may be a __________.
If you see something burning up in the atmosphere, it could be a ____________.
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What does this picture represent? Explain why. (There can be
more than one answer)
Words to use:Galaxy Universe Star Satellite Orbit
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What does this picture represent? Explain why. (There can be
more than one answer)
Words to use:Galaxy Universe Star Satellite Orbit
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What does this picture represent? Explain why. (There can be
more than one answer)
Words to use:Meteoroid Meteor Meteorite Asteroid Comet
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What does this picture represent? Explain why. (There can be
more than one answer)
Words to use:Rotation Revolution Axis Planet Orbit
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What does this picture represent? Explain why. (There can be
more than one answer)
Words to use:Rotation Revolution Axis Planet Orbit
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What does this picture represent? Explain why. (There can be
more than one answer)
Words to use:Meteoroid Meteor Meteorite Asteroid Comet