Astronomy Practice Test
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Astronomy in the 8th Grade is a very interesting and very fun to take up. The quiz below covers all you studied about astronomy this year and will ensure you understand the concept you did not. Give it a shot and study hard for the exams. All the best!
- 1.
![The first part of this chart is a/an _____________. - ProProfs]( "The first part of this chart is a/an _____________.")
The first part of this chart is a/an _____________. - 2.The second part is a/an __________.
- 3.The third part is a/an __________.
- 4.The fourth part is a/an __________.
- 5.The fifth part is a/an __________.
- 6.The sixth part is a/an __________.
- 7.The seventh part is a/an __________.
- 8.The ninth part is a/an __________.
- 9.The tenth part is a/an __________.
- 10.The eleventh part is a/an __________.
- 11.Which side of the chart is for low mass stars?
- A.
The bottom
- B.
Both
- C.
Neither
- D.
The top
- 12.Which part of the chart is for high mass stars?
- A.
The bottom
- B.
Both
- C.
Niether
- D.
The top
- 13.As the protostar contracts, the core temperature reaches 10,000,000 degrees c, and ______ begins, causing it to become a star.
- 14.What color is a low to medium-mass star?
- A.
Blue
- B.
Yellow
- 15.What color is a high-mass star?
- A.
Blue
- B.
Yellow
- 16.What two things to fusion create?
- A.
Carbon and helium
- B.
Carbon and radient energy
- C.
Oxygen and helium
- D.
Radient energy and helium
- E.
Radient energy and oxygen
- 17.Stars expand because gravity balences out the energy production.
- A.
True
- B.
False, stars don't expand.
- C.
False, stars expand because gravity doesn't balence out the energy production.
- 18.What is a hot and dense core of matter remains?
- A.
Black dwarfs
- B.
Supernovas
- C.
White dwarfs
- D.
Stars
- 19.What is a supernova?
- A.
A stage of star causing the star to contract
- B.
An explosion that blows the star apart
- 20.What does a white dwarf become when it stops glowing?
- A.
A nova
- B.
A black dwarf
- C.
A nebula
- 21.Often, a white dwarf will not cool quietly, it will have repeated explosions called __________.
- 22.A high-mass star ends its cycle by becoming a...
- A.
Neutron star or black whole
- B.
A white dwarf or black dwarf
- C.
A black dwarf or a black hole
- D.
A neutron star or a white dwarf
- 23.Compare and contrast the two types of telescopes.
- 24.A radio telescope is a ______.
- 25.What type of telescope makes the best large telescopes?
- 26.What color star is our sun?
- A.
Blue
- B.
Red
- C.
Yellow
- D.
Violet
- 27.What is the temperature of our sun? (in celcius of course)
- A.
3000
- B.
5000
- C.
2000
- D.
100
- 28.Hottest stars are 20,000 degrees and are
- A.
Red
- B.
Blue
- C.
Green
- D.
Violet
- E.
White
- 29.Describe apparent and actual motion.
- 30.Circumpolar stars are
- A.
Stars that are far away from the star Polaris, and therefore are seen all year round.
- B.
Stars that are close to the star Polaris, and therefore are seen all year round.
- C.
Nebulas that are formed near the star Polaris.
- D.
Stars that are named after Polaris.
- 31.How can we tell tgat stars are moving?
- 32.Stars moving towards the earth have ________ shift because the wavelengths are smaller.
- A.
Red
- B.
Blue
- C.
Violet
- D.
White
- 33.Distances in space are measureid in light years which is _________ km/sec.
- A.
300000
- B.
200000
- C.
100000
- D.
30000
- 34.It takes ____ minutes for light to get from the sun to our earth.
- 35.Explain parallax.
- 36.Name the two things that the visibility of a star depends on.
- A.
Distance from the earth and size
- B.
Brightness and size
- C.
Temperature and distance from the earth
- D.
Distance from the earth and brightness
- 37.How bright a star appears when viewed from earth is called it's __________.
- 38.The dimmeststars have low # aooarebt magnitutes.
- A.
True
- B.
False
- 39.The sun's apparent magnitude is ________.
- 40._____________ is how bright stars would appear if they were all the same distance frrom the earth.
- 41.Is the sun's absolute magnitude more or less than it's apparent magnitude?
- A.
Less, it would be moved further away.
- B.
More, it would be moved further away.
- C.
Less, it would be moved closer.
- D.
More, it would be moved closer.
- 42.
![In the H-R diagram that is attached, in what two ways are the stars classified? - ProProfs]( "In the H-R diagram that is attached, in what two ways are the stars classified?")
In the H-R diagram that is attached, in what two ways are the stars classified?- A.
Temperature, absolute magnitude
- B.
Brightness, temperature
- C.
Size, brightness
- D.
Temberature, size
- 43.In the main sequence, the ________ increases as the temperature increases.
- 44.Why are white dwarfs and supergiants exceptions to the main sequence?
- 45.Put the types of light waves in order based on size and give a brief description of each.
- 46.The instrument that separates visible light into its wavelengths is a
- A.
Telescope
- B.
Spectroscope
- C.
Sunglasses
- 47.Red has the longest wavelength and _____ has the shortest.
- 48.Each element, when heated, emites energy at a specific wavelengh. They only produce part of the sprectrum. This is called a
- 49.Why do we care what colors we see through the spectroscope?
- 50.What is inertia?
- A.
The tendancy of an object in motion to continue in motion in a straight line unless affected by an outside force.
- B.
The force that attracts objects towards eachother.
- 51.Perihelion is the point in the earth;s orbit when it is furthest from the sun.
- A.
True
- B.
False
- 52.Describe why we have seasons and the two things that this causes.
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