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Test your basic knowledge |
Astronomy Basics
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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. Any of the small solid extraterrestrial bodies that hits the earth's atmosphere
irregular galaxy
solar eclipse
red dwarf
meteor
2. The theory that the universe originated 20 billion years ago from the cataclysmic explosion of a small mass of matter at extremely high density and temperature
terrestrial planet
cepheid variable
big bang theory
planetesimal
3. The average distance between the Earth and the sun - or approximately 150000000 km
Halley's Comet
astronomical unit (AU)
comet
accretion
4. Optical telescope that has a large convex lens that produces an image that is viewed through the eyepiece
Johannes Kepler
rotation
refracting telescope
perigee
5. An enormously bright - distant galaxy with a giant black hole at its center
spectroscopy
quasar
solstace
absorption spectrum
6. The rainbow effect when light is dispersed through lens
equinox
chromatic abberation
Kuiper Belt
red dwarf
7. An elongated circle - or oval shape - the shape of the planets orbit
Oort Cloud
milky way galaxy
apogee
ellipse
8. Spectrum of electromagnetic radiation emitted by a self-luminous source
terrestrial planet
aphelion
red shift
emission spectrum
9. A particle of electromagnetic radiation having zero mass and carrying a quantum of energy
rotation
evolution
photon
supergiant
10. Explained movement of planets with retrograde motion
meteorite
solar eclipse
Sir Isaac Newton
Claudius Ptolemy
11. Brahe's assistant - German astronomer who first discovered the three laws of planetary motion (1571-1630)
earth's tilt
blue shift
white dwarf
Johannes Kepler
12. Radiation left over from the beginning of the universe
Oort Cloud
Claudius Ptolemy
background radiation
nebula
13. The motion of a spinning body (as a top) in which it wobbles so that the axis of rotation sweeps out a cone
local group
precession
spectroscopy
geocentric
14. A contracting cloud of gas and dust with enough mass to form a star
earth's tilt
the big crunch
protostar
apparent magnitude
15. Stony or metallic object that is the remains of a meteoroid that has reached the earth's surface
supernova
nebula
Hertzsprung-Russel Diagram
meteorite
16. English mathematician and physicist - discovered the law of universal gravitation
light-year
nebula
pulsar
Sir Isaac Newton
17. The most distant point in the orbit of the moon
pulsar
apogee
big bang theory
chromatic abberation
18. When the northern or southern most point on earth receives the most sun because the earth is tilted toward the sun
phases of the moon
supergiant
astronomical unit (AU)
solstace
19. A large body in space that orbits a star and does not produce light of its own
Kuiper Belt
moon
planet
meteor
20. The apparent westward motion of the planets with respect to the stars
retrograde motion
background radiation
supernova
solstace
21. A large body in space that orbits a star and does not produce light of its own
planet
meteorite
moon
meteorite
22. The theory that the universe originated 20 billion years ago from the cataclysmic explosion of a small mass of matter at extremely high density and temperature
retrograde motion
big bang theory
meteor
perigee
23. Polish astronomer who produced a workable model of the solar system with the sun in the center (1473-1543)
galaxy
supergiant
Nicolaus Copernicus
emission spectrum
24. Galaxy with no particular shape - contains new & old stars
Galileo Galilei
universal gravitation
irregular galaxy
cepheid variable
25. Brahe's assistant - German astronomer who first discovered the three laws of planetary motion (1571-1630)
blue shift
Oort Cloud
moon
Johannes Kepler
26. Optical telescope that has a large convex lens that produces an image that is viewed through the eyepiece
refracting telescope
Hubble Space Telescope
evolution
chromatic abberation
27. A space telescope and camera named for a famous astronaut (Edward Hubble) used to study space elements
earth's tilt
perigee
Hubble Space Telescope
spectroscopy
28. A graph relating the temperature and brightness of stars
evolution
Hertzsprung-Russel Diagram
emission spectrum
background radiation
29. Galaxy with no particular shape - contains new & old stars
moon
white dwarf
terrestrial planet
irregular galaxy
30. A star that ejects some of its material in the form of a cloud and become more luminous in the process
phases of the moon
Oort Cloud
terrestrial planet
nova
31. Any substance that cannot be broken down into simpler substances
element
phases of the moon
Halley's Comet
universal gravitation
32. An extremely bright star of very large diameter and low density
white dwarf
ellipse
continuous spectrum
supergiant
33. 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
meteroid
comet
emission spectrum
pulsar
34. Any of numerous small celestial bodies composed of rock and metal that move around the sun (mainly between the orbits of Mars and Jupiter)
asteroid
Tycho Brahe
Hubble's law
phases of the moon
35. The elliptical motion of a body as it orbits another body in space
evolution
equinox
constellation
Kuiper Belt
36. A star that expands and cools once it runs out of hydrogen fuel
universal gravitation
astronomical unit (AU)
red giant
galaxy cluster
37. A shift toward the red end of the spectrum in the observed spectral lines of stars or galaxies showing objects are moving away and that the universe is expanding
Nicolaus Copernicus
neutron star
red shift
blue shift
38. Polish astronomer who produced a workable model of the solar system with the sun in the center (1473-1543)
Nicolaus Copernicus
binary star
galaxy cluster
Sir Isaac Newton
39. Point of moon's orbit when it is nearest the earth
precession
equinox
perigee
planet
40. A very small star with low temperature - reddish in color
emission spectrum
astronomical unit (AU)
irregular galaxy
red dwarf
41. Chunk of rock or dust in space
black hole
parallax
meteroid
Nicolaus Copernicus
42. A group of about 30 galaxies that includes the Milky Way
radio telescope
Hertzsprung-Russel Diagram
local group
irregular galaxy
43. Radiation left over from the beginning of the universe
the big crunch
background radiation
supernova
moon
44. Astronomical telescope that picks up electromagnetic radiations in the radio-frequency range from extra-terrestrial sources
red shift
radio telescope
solstace
quasar
45. The decrease in wavelength of light due to an object moving away from the oberver
Hubble Space Telescope
photon
Claudius Ptolemy
blue shift
46. A system of galaxies containing from several to thousands of member galaxies
nova
quasar
galaxy cluster
phases of the moon
47. Remnant of a star that is so dense that nothing - not even light - can escape its gravity field
white dwarf
absorption spectrum
black hole
constellation
48. A particle of electromagnetic radiation having zero mass and carrying a quantum of energy
comet
photon
moon
solar eclipse
49. A variable star that brightens and dims regularly - or pulses - and whose distance can be determined from its period of pulsation
background radiation
cepheid variable
electromagnetic spectrum
element
50. The luminous cloud of particles surrounding the frozen nucleus of a comet
Galileo Galilei
coma
asteroid
rotation
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