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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. Explained movement of planets with retrograde motion
Claudius Ptolemy
Nicolaus Copernicus
heliocentric
terrestrial planet
2. A large body in space that orbits a star and does not produce light of its own
planet
equinox
Tycho Brahe
moon
3. A faint star of enormous density
solstace
elliptical galaxy
light-year
white dwarf
4. The increase in wavelength of light due to an object moving away from the observer
solstace
supernova
red shift
cepheid variable
5. A large cloud of dust and gas that can break apart into smaller pieces and form stars
wavelength
nebula
parallax
supergiant
6. The farther away a galaxy is - the faster it is moving away
7. Spectrum of electromagnetic radiation emitted by a self-luminous source
asteroid
coma
emission spectrum
astronomy
8. The increase in wavelength of light due to an object moving away from the observer
parallax
Claudius Ptolemy
pulsar
red shift
9. A model of the solar system in which Earth and the other planets revolve around the sun
comet
irregular galaxy
emission spectrum
heliocentric
10. Any natural satellite of a planet
nebula
moon
the big crunch
nova
11. The elliptical motion of a body as it orbits another body in space
evolution
ellipse
electromagnetic spectrum
refracting telescope
12. The comet discovered in 1705 that repeats itself every 76 years and last appeared in 1986.
13. A telescope that uses a curved mirror to collect and focus light
spiral galaxy
red shift
reflecting telescope
Hubble Space Telescope
14. Change in the apparent frequency of a wave as observer and source move toward or away from each other
lunar eclipse
refracting telescope
doppler effect
constellation
15. The elliptical motion of a body as it orbits another body in space
evolution
phases of the moon
equinox
electromagnetic spectrum
16. Astronomical telescope that picks up electromagnetic radiations in the radio-frequency range from extra-terrestrial sources
elliptical galaxy
ellipse
radio telescope
Galileo Galilei
17. The small - dense remains of a high-mass star after a supernova
neutron star
nebulae
geocentric
element
18. A model of the universe based on the assumption that the sun - moon - and planets all orbit Earth
geocentric
accretion
white dwarf
white dwarf
19. A star that falls into the main sequence category on the H-are diagram
main-sequence star
Johannes Kepler
precession
constellation
20. Brahe's assistant - German astronomer who first discovered the three laws of planetary motion (1571-1630)
supernova
planet
meteorite
Johannes Kepler
21. 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
chromatic abberation
spiral galaxy
equinox
red shift
22. The theory that states that gravity will over come the expansion of the universe and bring everything together in an implosion
apparent magnitude
chromatic abberation
perhelion
the big crunch
23. A variable star that brightens and dims regularly - or pulses - and whose distance can be determined from its period of pulsation
heliocentric
red dwarf
electromagnetic spectrum
cepheid variable
24. 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
radio telescope
big bang theory
continuous spectrum
chromatic abberation
25. The spinning of Earth on its axis
rotation
irregular galaxy
apparent magnitude
solstace
26. A telescope that uses a curved mirror to collect and focus light
lunar eclipse
planet
Hertzsprung-Russel Diagram
reflecting telescope
27. Remnant of a star that is so dense that nothing - not even light - can escape its gravity field
phases of the moon
black hole
nebula
binary star
28. An elongated circle - or oval shape - the shape of the planets orbit
red shift
ellipse
evolution
absolute magnitude
29. Any substance that cannot be broken down into simpler substances
nebula
element
pulsar
radio telescope
30. A galaxy with a bulge in the middle and arms that spiral outward in a pinwheel pattern
spiral galaxy
evolution
main-sequence star
phases of the moon
31. A group of about 30 galaxies that includes the Milky Way
local group
red shift
perigee
Halley's Comet
32. 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
aphelion
big bang theory
constellation
red shift
33. A faint star of enormous density
geocentric
irregular galaxy
absorption spectrum
white dwarf
34. Radiation left over from the beginning of the universe
background radiation
local group
lunar eclipse
meteroid
35. A measure of the amount of light that a star actually emits
perhelion
rotation
radio telescope
absolute magnitude
36. Stony or metallic object that is the remains of a meteoroid that has reached the earth's surface
emission spectrum
neutron star
parallax
meteorite
37. Varying amounts of the lighted moon as seen from earth
phases of the moon
supernova
aphelion
protostar
38. The apparent change in position of an object when seen from different places
perigee
quasar
parallax
solar eclipse
39. An immense cloud of gas (mainly hydrogen) and dust in interstellar space
red shift
milky way galaxy
nebula
neutron star
40. A spherical region of comets that surrounds the solar system
solar eclipse
milky way galaxy
astronomy
Oort Cloud
41. A model of the solar system in which Earth and the other planets revolve around the sun
heliocentric
reflecting telescope
photon
apogee
42. Massive clouds of dust and gases where stars are born
equinox
Hubble Space Telescope
galaxy
nebulae
43. An elongated circle - or oval shape - the shape of the planets orbit
spectroscopy
earth's tilt
ellipse
absolute magnitude
44. A group of about 30 galaxies that includes the Milky Way
local group
binary star
Oort Cloud
Hubble Space Telescope
45. Planet with a solid - rocky crust; more dense; Inner planet. Mercury - Venus - Earth - Mars
chromatic abberation
Kuiper Belt
terrestrial planet
ellipse
46. Influenced by Copernicus; Built observatory and collected data on the locations of stars and planets for over 20 years
galaxy cluster
Tycho Brahe
binary star
parallax
47. Every object in the universe was attracted to every other object w/ a force that is directly proportional to the masses and proportional to distance between them
aphelion
universal gravitation
astronomy
emission spectrum
48. Brahe's assistant - German astronomer who first discovered the three laws of planetary motion (1571-1630)
Sir Isaac Newton
geocentric
Johannes Kepler
meteroid
49. An enormously bright - distant galaxy with a giant black hole at its center
quasar
earth's tilt
chromatic abberation
Tycho Brahe
50. Any of numerous small celestial bodies composed of rock and metal that move around the sun (mainly between the orbits of Mars and Jupiter)
heliocentric
geocentric
asteroid
nova