ASTRONOMY QUIZ 1

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YAY KNOWLEDGE

Astronomy

University/Undergrad

37 Terms

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What is the order of the planets?
My Very Excellent Mom Just Served Us Noodles
My Very Excellent Mom Just Served Us Noodles
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What galaxy do we live in?
The Milky Way Galaxy!
The Milky Way Galaxy!
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What does our solar system contain?
The sun, 8 planets, dwarf planets, comets, asteroids, & meteors
The sun, 8 planets, dwarf planets, comets, asteroids, & meteors
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What is an astronomical unit?
Measuring unit used in space exploration. It is the equivalent to the average distance between the earth and sun.
Measuring unit used in space exploration. It is the equivalent to the average distance between the earth and sun.
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Planets Largest to Smallest
Jupiter, Saturn, Uranus, Neptune, Earth, Venus, Mars, Mercury
Jupiter, Saturn, Uranus, Neptune, Earth, Venus, Mars, Mercury
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What is a Jovian Planet?
A gas planet made with hydrogen and helium. Examples are Jupiter, Saturn, Uranus, & Neptune.
A gas planet made with hydrogen and helium. Examples are Jupiter, Saturn, Uranus, & Neptune.
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What is a Terrestrial planet?
A planet with a rocky & solid surface. Examples are Earth, Venus, Mars, & Mercury.
A planet with a rocky & solid surface. Examples are Earth, Venus, Mars, & Mercury.
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What is a planet?
A planet is a celestial body that orbits a stars and shines from solar light, is massive enough to be rounded by its own gravity, but not massive enough to cause thermonuclear fusion.
A planet is a celestial body that orbits a stars and shines from solar light, is massive enough to be rounded by its own gravity, but not massive enough to cause thermonuclear fusion.
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What planets have rings?
Jupiter, Saturn, Uranus, & Neptune
Jupiter, Saturn, Uranus, & Neptune
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What did ancient people nickname planets?
They nicknamed them wandering stars! This is because stars remain motionless in relation to each other while planets shift their positions relative to the stars.
They nicknamed them wandering stars! This is because stars remain motionless in relation to each other while planets shift their positions relative to the stars.
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What is a moon? How are they created?
A natural Satellite! They are probably formed from floating debris, discs of gas, and dust circulating around planets in the early solar system.
A natural Satellite! They are probably formed from floating debris, discs of gas, and dust circulating around planets in the early solar system.
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What planet’s have moons?
Every planet except Mercury & Venus!
Every planet except Mercury & Venus!
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What is an asteroid?
They are solid, small, rocky objects that orbit the sun.
They are solid, small, rocky objects that orbit the sun.
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What is a comet?
Cosmic snowballs of frozen gases, rock, and dust that orbit the Sun. They are identified by their icy tail of frozen gas and dust.
Cosmic snowballs of frozen gases, rock, and dust that orbit the Sun. They are identified by their icy tail of frozen gas and dust.
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What is the sun?
The sun is a star that is at the center of our Solar System. It is the largest object in our solar system, and all objects are in orbit around the Sun.
The sun is a star that is at the center of our Solar System. It is the largest object in our solar system, and all objects are in orbit around the Sun.
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How many planets are in the solar system?
8!
8!
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Why isn’t Pluto a planet anymore?
Because is did not clear its neighboring region of other objects AKA Eris.
Because is did not clear its neighboring region of other objects AKA Eris.
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What discovery led to Pluto not being declared a planet?
In 2005, a neighboring object named Eris was announced to have been discovered and it had a moon.
In 2005, a neighboring object named Eris was announced to have been discovered and it had a moon.
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What are the most abundant items in the universe?
Hydrogen & Helium
Hydrogen & Helium
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What is a dwarf planet?
A dwarf planet is in orbit around the Sun,

has sufficient mass for its self-gravity to become round in shape, has not cleared the neighborhood around its orbit, and is not a satellite.
A dwarf planet is in orbit around the Sun, has sufficient mass for its self-gravity to become round in shape, has not cleared the neighborhood around its orbit, and is not a satellite.
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How many planets are outside our solar system?
5,000+
5,000+
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What are stars made of?
Hydrogen & Helium & they generate energy through nuclear fusion.
Hydrogen & Helium & they generate energy through nuclear fusion.
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How big is our star compared to others?
In the middle, not too big or small!
In the middle, not too big or small!
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What is solar mass?
A measuring unit for stars typically ranging from 0.1 - 100. Our sun is 1 solar mass.
A measuring unit for stars typically ranging from 0.1 - 100. Our sun is 1 solar mass.
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What is the star life cycle?
They are born, live, and die!
They are born, live, and die!
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What is a galaxy?
A massive gravitationally bound system of stars and stellar remnants, gas, dust, planets, and dark matter.
A massive gravitationally bound system of stars and stellar remnants, gas, dust, planets, and dark matter.
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What is dark matter?
Dark matter is matter that you can’t see but whose gravity affects visible matter and background radiation.
Dark matter is matter that you can’t see but whose gravity affects visible matter and background radiation.
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How many stars are in our galaxy?
100-400 billion stars.
100-400 billion stars.
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How many galaxies are there?
Some studies argue that there are more than 2 trillion galaxies in the observable universe.
Some studies argue that there are more than 2 trillion galaxies in the observable universe.
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What is the observable universe?
It is all galaxies and matter that we can theoretically observe!
It is all galaxies and matter that we can theoretically observe!
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What is a lightyear?
A lightyear is a unit of measurement that represents the distance that light travels in a year.
A lightyear is a unit of measurement that represents the distance that light travels in a year.
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How fast does light travel?
Light travels at a speed of 300,000,000 m/s in a vacuum
Light travels at a speed of 300,000,000 m/s in a vacuum
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How much is a light year?
1 light year = 10,000,000,000,000,000 meters
1 light year = 10,000,000,000,000,000 meters
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What is the local group?
A gravitationally bound group of galaxies that the Milky Way is a member of. It Contains more than 30 galaxies.
A gravitationally bound group of galaxies that the Milky Way is a member of. It Contains more than 30 galaxies.
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What is the big bang?
The event that started the Universe!
The event that started the Universe!
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How many dwarf planets are there? What are their names?
5! Ceres, Pluto, Eris, Makemake, and Haumea
5! Ceres, Pluto, Eris, Makemake, and Haumea
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What was the IAU XXVIth General Assembly?
IAU is the International Astronomical Union

Prague

August 14-25, 2006

About 2,400 astronomers attended the meeting

400 People voted
IAU is the International Astronomical Union Prague August 14-25, 2006 About 2,400 astronomers attended the meeting 400 People voted