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P.S. 160 Name:____________________ Class: __________ Date: _________________
Unit 3 – Module B – Our Solar System
Solar System
Definition: Our sun and the planets that move around it.
Planets
Definition: A large, round object in space (such as the Earth) that travels around a star (such as the sun).
Stars
Definition: Objects in space that are made of burning gas and that look like points of light in the night sky.
Rotate Revolves Sun
P.S. 160 Name:____________________ Class: __________ Date: _________________
Unit 3 – Module B – Our Solar System
Definition: To move or turn in a circle.
Definition: To turn around a center point or line.
Definition: The star that the Earth moves around and that gives the Earth heat and light.
P.S. 160 Name:____________________ Class: __________ Date: _________________
Unit 3 – Module B – Our Solar System
Nuclear
Definition: Relating to energy inside the sun.
Tilted
Definition: When something moves in a position where one side is higher than the other.
Surrounded
Definition: To have someone or something all around you; enclosed.
P.S. 160 Name:____________________ Class: __________ Date: _________________
Unit 3 – Module B – Our Solar System
Barren
Definition: Land that is barren cannot grow plants; empty.
Faults
Definition: Cracks that run through Earth’s crust.
Elements
Definition: The aspects or components of something.
P.S. 160 Name:____________________ Class: __________ Date: _________________
Unit 3 – Module B – Our Solar System
Composed
Definition: To create or construct something
Plume
Definition: A column of one fluid moving through another.
Descent
Definition: To go down; drop.
P.S. 160 Name:____________________ Class: __________ Date: _________________
Unit 3 – Module B – Our Solar System
Frigid
Definition: Very cold.
Fainter
Definition: Difficult to hear, see, or smell; lighter.
Classify
Definition: To put things into groups according to type; sort.
P.S. 160 Name:____________________ Class: __________ Date: _________________
Unit 3 – Module B – Our Solar System
Terrain
Definition: A particular kind of land.
Solar Eclipse
Definition: When the moon comes between the sun and Earth and hides some of the light coming from the sun.
Erosion
Definition: Destruction of something by natural forces.
P.S. 160 Name:____________________ Class: __________ Date: _________________
Unit 3 – Module B – Our Solar System
Constellation
Definition: A group of stars that forms a particular shape in the sky and has been given a name
Telescope
Definition: A device shaped like a long tube that you look through in order to see things that are far away.
Meteorite
Definition: A piece of rock or metal that has fallen to the ground from outer space.
P.S. 160 Name:____________________ Class: __________ Date: _________________
Unit 3 – Module B – Our Solar System
Axis
Definition: The imaginary straight line that something (such as the Earth) turns around.
Asteroid
Definition: Thousands of small planets that circle around the sun.
Satellite
Definition: A machine that is sent into space and that moves around the earth, moon, sun, or a planet.
Orbit Astronomy Rings
P.S. 160 Name:____________________ Class: __________ Date: _________________
Unit 3 – Module B – Our Solar System
Definition: The curved path that something (such as a moon or satellite) follows as it goes around something else (such as a planet).
Definition: The scientific study of stars, planets, and other objects in outer space.
Definition: something that forms a circle around something else.
P.S. 160 Name:____________________ Class: __________ Date: _________________
Unit 3 – Module B – Our Solar System
Equator
Definition: An imaginary circle around the middle of the Earth that is the same distance from the North Pole and the South Pole.
Atmosphere
Definition: The whole mass of air that surrounds the Earth.
Gravity
Definition: The natural force that tends to cause physical things to move towards each other: the force that causes things to fall towards the Earth.
P.S. 160 Name:____________________ Class: __________ Date: _________________
Unit 3 – Module B – Our Solar System
Carbon Dioxide
Definition: An odorless gas.
Nitrogen
Definition: A chemical that has no color or smell and that makes up a large part of the atmosphere.
Hydrogen
Definition: A gas that helps the sun shine.
P.S. 160 Name:____________________ Class: __________ Date: _________________
Unit 3 – Module B – Our Solar System
Remains
Definition: The parts of something that are left after something has been destroyed.
Planetesimals
Definition: Rocky or icy masses made of cool gas and dust particles.
Photosphere
Definition: The sun’s surface.
P.S. 160 Name:____________________ Class: __________ Date: _________________
Unit 3 – Module B – Our Solar System
Prominences
Definition: flaming streams of gases that can travel through the sun’s atmosphere.
Chromosphere
Definition: The inner atmosphere of the sun.
Corona
Definition: The outer atmosphere of the sun.
P.S. 160 Name:____________________ Class: __________ Date: _________________
Unit 3 – Module B – Our Solar System
Mercury
Definition: Planet that was named after the Roman messenger god, Mercury, because it travels quickly around the sun.
Jupiter
Definition: The fifth planet from the sun; largest planet in the Solar System.
Earth
Definition: The planet we live on; third planet from the sun.
P.S. 160 Name:____________________ Class: __________ Date: _________________
Unit 3 – Module B – Our Solar System
Saturn
Definition: Sixth planet from the sun; second largest planet in the Solar System.
Venus
Definition: Called Earth’s sister planet because of the size, second nearest planet from the sun.
Mars
Definition: Planet that shines bright red, so the Romans named it after their god of war.
P.S. 160 Name:____________________ Class: __________ Date: _________________
Unit 3 – Module B – Our Solar System
Uranus
Definition: The planet that is seventh in order from the sun.
Neptune
Definition: The planet eighth in order from the sun.
Pluto
Definition: The object in our solar system that in the past was thought to be the planet farthest from the sun but that is no longer considered to be a planet.
P.S. 160 Name:____________________ Class: __________ Date: _________________
Unit 3 – Module B – Our Solar System
Milky Way
Definition: The galaxy in which we live that contains the stars that make up the Milky Way.
Galaxy
Definition: Any one of the very large groups of stars that make up the universe.
Greenhouse Effect
Definition: When the atmosphere traps heat so that the heat cannot escape.
