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Test your basic knowledge |
Astronomy Basics
Start Test
Study First
Subject
:
science
Instructions:
Answer 50 questions in 15 minutes.
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.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Radiation left over from the beginning of the universe
background radiation
irregular galaxy
electromagnetic spectrum
Johannes Kepler
2. Large group of stars - dust - and gas held together by gravity; can be elliptical - spiral - or irregular
supergiant
galaxy
nebula
absorption spectrum
3. Point of moon's orbit when it is nearest the earth
perigee
moon
solar eclipse
reflecting telescope
4. A graph relating the temperature and brightness of stars
doppler effect
Hertzsprung-Russel Diagram
pulsar
nova
5. Massive clouds of dust and gases where stars are born
rotation
supergiant
nebulae
planetesimal
6. An elongated circle - or oval shape - the shape of the planets orbit
retrograde motion
solar eclipse
ellipse
accretion
7. A system of galaxies containing from several to thousands of member galaxies
Hertzsprung-Russel Diagram
solar eclipse
galaxy cluster
moon
8. A model of the universe based on the assumption that the sun - moon - and planets all orbit Earth
Halley's Comet
spiral galaxy
geocentric
solstace
9. A contracting cloud of gas and dust with enough mass to form a star
protostar
constellation
planetesimal
white dwarf
10. A telescope that uses a curved mirror to collect and focus light
galaxy cluster
reflecting telescope
background radiation
meteroid
11. The apparent change in position of an object when seen from different places
galaxy
nebula
parallax
binary star
12. An enormously bright - distant galaxy with a giant black hole at its center
binary star
local group
quasar
black hole
13. The most distant point in the orbit of the moon
Sir Isaac Newton
apogee
phases of the moon
solstace
14. The decrease in wavelength of light due to an object moving away from the oberver
meteroid
black hole
reflecting telescope
blue shift
15. Point of moon's orbit when it is nearest the earth
nebulae
perigee
irregular galaxy
Oort Cloud
16. A model of the universe based on the assumption that the sun - moon - and planets all orbit Earth
geocentric
nebulae
reflecting telescope
the big crunch
17. Explained movement of planets with retrograde motion
element
pulsar
Claudius Ptolemy
Halley's Comet
18. Varying amounts of the lighted moon as seen from earth
doppler effect
planetesimal
phases of the moon
element
19. Any of the small solid extraterrestrial bodies that hits the earth's atmosphere
meteor
red shift
cepheid variable
Nicolaus Copernicus
20. A system of two stars that revolve around each other under their mutual gravitation
phases of the moon
binary star
retrograde motion
spiral galaxy
21. The spinning of Earth on its axis
quasar
rotation
big bang theory
absorption spectrum
22. The farther away a galaxy is - the faster it is moving away
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23. The blocking of sunlight to the moon that occurs when Earth is directly between the sun and the moon
lunar eclipse
phases of the moon
Kuiper Belt
refracting telescope
24. The distance between crests of waves - such as those of the electromagnetic spectrum
solstace
wavelength
red shift
perhelion
25. English mathematician and physicist - discovered the law of universal gravitation
red shift
nebula
perigee
Sir Isaac Newton
26. The farther away a galaxy is - the faster it is moving away
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27. The most distant point in the orbit of the moon
emission spectrum
universal gravitation
apogee
red shift
28. A very small star with low temperature - reddish in color
elliptical galaxy
galaxy
asteroid
red dwarf
29. A star that falls into the main sequence category on the H-are diagram
main-sequence star
white dwarf
milky way galaxy
Sir Isaac Newton
30. Optical telescope that has a large convex lens that produces an image that is viewed through the eyepiece
Nicolaus Copernicus
parallax
ellipse
refracting telescope
31. The name of our galaxy - a spiral galaxy that contains about 400 billion stars
rotation
red dwarf
lunar eclipse
milky way galaxy
32. Light distance travels in one year (9.5 trillion km)
solar eclipse
light-year
nova
galaxy
33. The luminous cloud of particles surrounding the frozen nucleus of a comet
elliptical galaxy
solar eclipse
black hole
coma
34. A graph relating the temperature and brightness of stars
binary star
absorption spectrum
Hertzsprung-Russel Diagram
constellation
35. The two days of the year on which neither hemisphere is tilted toward or away from the sun
supernova
white dwarf
equinox
Johannes Kepler
36. Radiation left over from the beginning of the universe
background radiation
ellipse
white dwarf
solstace
37. Stony or metallic object that is the remains of a meteoroid that has reached the earth's surface
meteorite
Hubble Space Telescope
precession
galaxy cluster
38. The spinning of Earth on its axis
galaxy
aphelion
rotation
perhelion
39. Influenced by Copernicus; Built observatory and collected data on the locations of stars and planets for over 20 years
planetesimal
perhelion
Tycho Brahe
white dwarf
40. Optical telescope that has a large convex lens that produces an image that is viewed through the eyepiece
doppler effect
Hubble's law
refracting telescope
electromagnetic spectrum
41. An extremely bright star of very large diameter and low density
meteor
supergiant
geocentric
elliptical galaxy
42. Polish astronomer who produced a workable model of the solar system with the sun in the center (1473-1543)
emission spectrum
Halley's Comet
solstace
Nicolaus Copernicus
43. The study of the spectra of stars by analyzing the spectral properties of the light they give off
wavelength
spectroscopy
galaxy cluster
retrograde motion
44. Explained movement of planets with retrograde motion
aphelion
rotation
Claudius Ptolemy
elliptical galaxy
45. Point in orbit that is closest to the sun - planet moves faster
equinox
aphelion
rotation
perhelion
46. The apparent westward motion of the planets with respect to the stars
retrograde motion
spiral galaxy
nova
binary star
47. The average distance between the Earth and the sun - or approximately 150000000 km
astronomical unit (AU)
Claudius Ptolemy
white dwarf
heliocentric
48. A galaxy with a bulge in the middle and arms that spiral outward in a pinwheel pattern
element
neutron star
coma
spiral galaxy
49. Space object made of dust and rock particles mixed with frozen water - methane - and ammonia that forms a bright coma as it approaches the Sun
comet
ellipse
protostar
astronomy
50. All of the frequencies or wavelengths of electromagnetic radiation
nova
background radiation
electromagnetic spectrum
element
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