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Test your basic knowledge |
Astronomy Basics
Start Test
Study First
Subject
:
science
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
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. Change in the apparent frequency of a wave as observer and source move toward or away from each other
meteorite
planetesimal
doppler effect
perigee
2. Spectrum of electromagnetic radiation emitted by a self-luminous source
emission spectrum
universal gravitation
meteorite
main-sequence star
3. The spectrum of electromagnetic radiation that has passed through a medium that absorbed radiation of certain wavelengths
Jovian planet
absorption spectrum
Galileo Galilei
evolution
4. A spectrum of light in which there are no gaps - so that each region blends directly into the next
astronomical unit (AU)
continuous spectrum
spiral galaxy
local group
5. Point in orbit that is closest to the sun - planet moves faster
binary star
blue shift
perhelion
cepheid variable
6. The brightness of a star when viewed from Earth
aphelion
apparent magnitude
refracting telescope
nebulae
7. A system of galaxies containing from several to thousands of member galaxies
neutron star
galaxy cluster
retrograde motion
big bang theory
8. The brilliant explosion of a dying supergiant star
parallax
galaxy
supernova
quasar
9. The apparent westward motion of the planets with respect to the stars
retrograde motion
quasar
supergiant
apparent magnitude
10. The luminous cloud of particles surrounding the frozen nucleus of a comet
Halley's Comet
emission spectrum
coma
moon
11. Chunk of rock or dust in space
meteroid
red dwarf
binary star
Kuiper Belt
12. The elliptical motion of a body as it orbits another body in space
evolution
Tycho Brahe
rotation
accretion
13. A model of the universe based on the assumption that the sun - moon - and planets all orbit Earth
red shift
main-sequence star
galaxy cluster
geocentric
14. A measure of the amount of light that a star actually emits
absolute magnitude
heliocentric
nova
parallax
15. Planet with a solid - rocky crust; more dense; Inner planet. Mercury - Venus - Earth - Mars
nebula
evolution
terrestrial planet
nova
16. Chunk of rock or dust in space
milky way galaxy
precession
meteroid
Hubble Space Telescope
17. A spectrum of light in which there are no gaps - so that each region blends directly into the next
phases of the moon
Johannes Kepler
asteroid
continuous spectrum
18. 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
precession
red dwarf
precession
comet
19. An enormously bright - distant galaxy with a giant black hole at its center
binary star
quasar
geocentric
Halley's Comet
20. A model of the solar system in which Earth and the other planets revolve around the sun
heliocentric
cepheid variable
lunar eclipse
planet
21. A measure of the amount of light that a star actually emits
red shift
absolute magnitude
black hole
white dwarf
22. Italian astronomer - mathematician - and physicist. His telescopes proved the sun is the center of the solar system and that the planets/moon move. He was persecuted for supporting Copernicus' ideas.
Galileo Galilei
binary star
Claudius Ptolemy
photon
23. Brahe's assistant - German astronomer who first discovered the three laws of planetary motion (1571-1630)
apparent magnitude
parallax
milky way galaxy
Johannes Kepler
24. 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
red shift
Sir Isaac Newton
radio telescope
the big crunch
25. A galaxy with a bulge in the middle and arms that spiral outward in a pinwheel pattern
spiral galaxy
neutron star
meteroid
photon
26. The small - dense remains of a high-mass star after a supernova
blue shift
neutron star
the big crunch
Johannes Kepler
27. A particle of electromagnetic radiation having zero mass and carrying a quantum of energy
absorption spectrum
photon
white dwarf
meteroid
28. The study of the universe
solar eclipse
meteor
astronomy
earth's tilt
29. A rapidly spinning neutron star that produces radio waves
pulsar
phases of the moon
asteroid
irregular galaxy
30. A large body in space that orbits a star and does not produce light of its own
background radiation
meteor
planet
meteroid
31. Influenced by Copernicus; Built observatory and collected data on the locations of stars and planets for over 20 years
apparent magnitude
Tycho Brahe
accretion
perigee
32. Polish astronomer who produced a workable model of the solar system with the sun in the center (1473-1543)
white dwarf
Nicolaus Copernicus
light-year
white dwarf
33. Spectrum of electromagnetic radiation emitted by a self-luminous source
emission spectrum
photon
Halley's Comet
absorption spectrum
34. Stony or metallic object that is the remains of a meteoroid that has reached the earth's surface
Hubble Space Telescope
meteorite
binary star
Hubble's law
35. The average distance between the Earth and the sun - or approximately 150000000 km
Jovian planet
comet
emission spectrum
astronomical unit (AU)
36. The two days of the year on which neither hemisphere is tilted toward or away from the sun
Johannes Kepler
big bang theory
spectroscopy
equinox
37. A system of two stars that revolve around each other under their mutual gravitation
Claudius Ptolemy
phases of the moon
binary star
geocentric
38. English mathematician and physicist - discovered the law of universal gravitation
protostar
Sir Isaac Newton
black hole
neutron star
39. The average distance between the Earth and the sun - or approximately 150000000 km
astronomical unit (AU)
equinox
Oort Cloud
big bang theory
40. Stony or metallic object that is the remains of a meteoroid that has reached the earth's surface
Oort Cloud
meteorite
heliocentric
blue shift
41. A faint star of enormous density
apogee
quasar
wavelength
white dwarf
42. Point of moon's orbit when it is nearest the earth
accretion
binary star
planetesimal
perigee
43. A graph relating the temperature and brightness of stars
Hertzsprung-Russel Diagram
element
cepheid variable
astronomical unit (AU)
44. The increase in wavelength of light due to an object moving away from the observer
moon
red shift
galaxy
Oort Cloud
45. Planets with low densities and are huge gas giants. Jupiter - Saturn - Uranus - Neptune
light-year
light-year
absorption spectrum
Jovian planet
46. Influenced by Copernicus; Built observatory and collected data on the locations of stars and planets for over 20 years
Tycho Brahe
neutron star
moon
radio telescope
47. The brilliant explosion of a dying supergiant star
supernova
solstace
elliptical galaxy
doppler effect
48. Polish astronomer who produced a workable model of the solar system with the sun in the center (1473-1543)
Hubble's law
Nicolaus Copernicus
perhelion
reflecting telescope
49. A large cloud of dust and gas that can break apart into smaller pieces and form stars
spiral galaxy
cepheid variable
nebula
meteorite
50. The blocking of sunlight to the moon that occurs when Earth is directly between the sun and the moon
equinox
red giant
lunar eclipse
aphelion