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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. The apparent change in position of an object when seen from different places
absorption spectrum
white dwarf
red shift
parallax
2. A group of stars that form a pattern in the sky
parallax
constellation
red shift
rotation
3. 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
red shift
comet
aphelion
lunar eclipse
4. A measure of the amount of light that a star actually emits
Galileo Galilei
galaxy
absolute magnitude
big bang theory
5. A model of the universe based on the assumption that the sun - moon - and planets all orbit Earth
geocentric
earth's tilt
Sir Isaac Newton
Hubble's law
6. Spectrum of electromagnetic radiation emitted by a self-luminous source
absorption spectrum
nebulae
emission spectrum
red giant
7. The spectrum of electromagnetic radiation that has passed through a medium that absorbed radiation of certain wavelengths
absolute magnitude
absorption spectrum
absolute magnitude
electromagnetic spectrum
8. An immense cloud of gas (mainly hydrogen) and dust in interstellar space
elliptical galaxy
Galileo Galilei
nebula
quasar
9. Change in the apparent frequency of a wave as observer and source move toward or away from each other
apparent magnitude
red dwarf
doppler effect
Tycho Brahe
10. Any of numerous small celestial bodies composed of rock and metal that move around the sun (mainly between the orbits of Mars and Jupiter)
moon
coma
asteroid
supernova
11. The brightness of a star when viewed from Earth
spiral galaxy
apparent magnitude
nebula
Halley's Comet
12. A large cloud of dust and gas that can break apart into smaller pieces and form stars
astronomy
ellipse
milky way galaxy
nebula
13. An enormously bright - distant galaxy with a giant black hole at its center
astronomy
quasar
main-sequence star
nebulae
14. The elliptical motion of a body as it orbits another body in space
wavelength
planetesimal
evolution
nebula
15. The place in the orbit of a planet where the planet is farthest from the sun
neutron star
aphelion
background radiation
element
16. The blocking of sunlight to the moon that occurs when Earth is directly between the sun and the moon
lunar eclipse
quasar
astronomical unit (AU)
emission spectrum
17. Influenced by Copernicus; Built observatory and collected data on the locations of stars and planets for over 20 years
apogee
accretion
phases of the moon
Tycho Brahe
18. A model of the universe based on the assumption that the sun - moon - and planets all orbit Earth
light-year
coma
refracting telescope
geocentric
19. Any natural satellite of a planet
earth's tilt
Nicolaus Copernicus
supergiant
moon
20. Change in the apparent frequency of a wave as observer and source move toward or away from each other
Jovian planet
retrograde motion
comet
doppler effect
21. A galaxy with a bulge in the middle and arms that spiral outward in a pinwheel pattern
element
spiral galaxy
planetesimal
wavelength
22. The increase in wavelength of light due to an object moving away from the observer
red shift
aphelion
quasar
apparent magnitude
23. A region of the solar system that is just beyond the orbit of neptune and that contains small bodies made mostly of ice
solstace
Kuiper Belt
lunar eclipse
absorption spectrum
24. A telescope that uses a curved mirror to collect and focus light
wavelength
supergiant
moon
reflecting telescope
25. All of the frequencies or wavelengths of electromagnetic radiation
chromatic abberation
electromagnetic spectrum
nebula
big bang theory
26. 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
white dwarf
emission spectrum
white dwarf
red shift
27. A particle of electromagnetic radiation having zero mass and carrying a quantum of energy
Tycho Brahe
photon
evolution
planet
28. A star that ejects some of its material in the form of a cloud and become more luminous in the process
nova
equinox
galaxy cluster
perhelion
29. A large body in space that orbits a star and does not produce light of its own
light-year
spectroscopy
planet
white dwarf
30. When the northern or southern most point on earth receives the most sun because the earth is tilted toward the sun
emission spectrum
element
Nicolaus Copernicus
solstace
31. Point in orbit that is closest to the sun - planet moves faster
lunar eclipse
perhelion
white dwarf
radio telescope
32. A measure of the amount of light that a star actually emits
equinox
absolute magnitude
geocentric
asteroid
33. A star that falls into the main sequence category on the H-are diagram
emission spectrum
planetesimal
galaxy
main-sequence star
34. A rapidly spinning neutron star that produces radio waves
neutron star
pulsar
irregular galaxy
blue shift
35. The brilliant explosion of a dying supergiant star
lunar eclipse
ellipse
supernova
Hubble Space Telescope
36. The apparent westward motion of the planets with respect to the stars
retrograde motion
Hubble's law
radio telescope
spectroscopy
37. The name of our galaxy - a spiral galaxy that contains about 400 billion stars
milky way galaxy
parallax
terrestrial planet
galaxy
38. Galaxy with no particular shape - contains new & old stars
irregular galaxy
Hubble Space Telescope
Nicolaus Copernicus
perigee
39. An extremely bright star of very large diameter and low density
supergiant
red giant
chromatic abberation
apparent magnitude
40. Explained movement of planets with retrograde motion
Claudius Ptolemy
accretion
aphelion
binary star
41. Varying amounts of the lighted moon as seen from earth
galaxy cluster
phases of the moon
Claudius Ptolemy
equinox
42. 23.5° - the reason we have seasons
43. Any of the small solid extraterrestrial bodies that hits the earth's atmosphere
galaxy cluster
Hubble Space Telescope
meteor
apparent magnitude
44. A spectrum of light in which there are no gaps - so that each region blends directly into the next
continuous spectrum
astronomy
white dwarf
supergiant
45. The comet discovered in 1705 that repeats itself every 76 years and last appeared in 1986.
46. Varying amounts of the lighted moon as seen from earth
Nicolaus Copernicus
phases of the moon
red shift
apogee
47. Explained movement of planets with retrograde motion
Claudius Ptolemy
Jovian planet
aphelion
comet
48. Astronomical telescope that picks up electromagnetic radiations in the radio-frequency range from extra-terrestrial sources
heliocentric
radio telescope
red shift
Kuiper Belt
49. Any of the small solid extraterrestrial bodies that hits the earth's atmosphere
spiral galaxy
meteor
spectroscopy
aphelion
50. A group of about 30 galaxies that includes the Milky Way
local group
radio telescope
blue shift
spectroscopy