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Science Test #4

Astronomy

TermDefinition
Astronomy- The scientific study of what is beyond the earth’s atmosphere
Astrology- Looking at the night sky to predict the future/predict world events; it is pagan.
Constellation Made up of a group of stars, creates pictures that sometimes tell ‘story's’
Galaxy a huge rotating collection of gas, dust, and billions of stars, planets, other celestial objects
Planet a large round celestial object that travels around a star.
Sextant To measure the angle of the sun or of the moon.
Sun The center of our solar system, it is a star made up of gases, and dust. And provides the earth with warmth.
Universe Everything that exists, including all energy, matter, and space.
Solar system The sun and all objects that travels around the star.
Star A massive collection of gases held together by its own gravity and emitting huge amounts of energy.
Comet A chunk of ice and dust that travels in a very long orbit around the sun.
Asteroid is a minor planet that is not a comet.
Orbit A path that uses gravity to move around a planet, or a moon 
Satellite A celestial object that travels around a planet or dwarf planet.
Sunspots Temporary phenomena on the photo-sphere of the Sun that appear visibly as dark spots compared to surrounding region
Luminous radiating or reflecting light; shining; bright.
Terrestrial The first four planets in our solar system, because of their rocky surface.
Gaseous gas giant Giant planet which mainly consist of light elements such as hydrogen and helium
Nebula Cloud of interstellar gas and dust, and when it collapses the gravitational pull becomes stronger/increases.
Protostar Concentrated gas and dust which increases in mass and becomes a dense sphere of matter causing its core to heat up.
Black hole The collapse core of a massive star, from a star 30x the size of our sun, this happens because the gravity pacts the particles so dense it can capture light
Supernova this only happens to stars 10- 30 times the size of our sun, this happens because the lack of outward explosions causes a large implosion of mass which when it hit the dense core it explodes outward causing a supernova
Milky way It is a spiral galaxy, in our solar system.
Telescope A device, that can help study the stars, planets, and our moon. It zooms in so we can have a better look.
Hubble deep field image taken by the Hubble Space Telescope of a small area of sky located in the constellation Ursa Major
Heliocentric having or representing the sun as the center, as in the accepted astronomical model of the solar system.
Rotation 24 hr day and night
Revolution 365 days/ a year. Controls the seasons
Radiation is a mixture of electromagnetic waves ranging from infrared (IR) to ultraviolet rays (UV). It of course includes visible light, which is in between IR and UV in the electromagnetic spectrum
Sunspots- Temporary phenomena on the photo-sphere of the Sun that appear visibly as dark spots compared to surrounding region
Nuclear fusion Process where atomic nuclei combine and release energy
Solar eclipse Is when the moon covers the sun causing the sky to turn black for a period. Don’t investigate the sky or else you will become blinded.
Lunar eclipse Is when the earth goes in front of the moon, causing the moon to appear red.
Northern lights is a natural light display in the Earth's sky, predominantly seen in the high-latitude regions. Auroras are the result of disturbances in the magnetosphere
Tides it can be used to create energy and approximate hours between tides.
Gravity & mass Gravity is the attractive pull between two objects that have mass
Shooting stars Shooting stars, also known as fallen stars, send streaks of light across the night sky before burning out into a point of inky blackness
Order of planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune.
The big dipper a series of stars that make a shape looking like a dipper.
The little dipper a series of stars which makes an image small than the big dipper, and end star is the North Star
Polaris commonly the North Star or Pole Star, is the brightest star in the constellation of Ursa Minor.
Factors that affect the brightness of stars The distance away The actual Brightness
Elliptical Galaxy a large group of stars that together make an elliptical or oval shape.
Spiral Galaxy a large group of stars that together made a spiral shape, such as the milky way.
Lenticular Galaxy a large group of stars that together make a shape that has a neutral bulge but no spiral arms
Irregular Galaxy a large group of stars that together make an irregular shape.
The Canadarm machine that helps in space by capturing and repaired satellites, positioned astronauts, maintained equipment, and moved cargo
Effect of micro-gravity on humans The spine stretches, so you grow taller Puffiness and redness on face during lift off.
Apollo 13 3 survivors one tank of oxygen lost, but gravity on the moon made it good to land back on the earth.
Challenger Explosion 7 people killed, due to an explosion that cut off their oxygen.
Space Spinoffs Technology made for space exploration which have yielded technology on earth ,MRE- meals ready to Eat, Space Blankets , and Robot technology
Created by: ANNA 14