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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. A model of the universe based on the assumption that the sun - moon - and planets all orbit Earth
meteroid
quasar
emission spectrum
geocentric
2. A faint star of enormous density
white dwarf
quasar
Kuiper Belt
black hole
3. A system of galaxies containing from several to thousands of member galaxies
astronomical unit (AU)
red dwarf
galaxy cluster
phases of the moon
4. The decrease in wavelength of light due to an object moving away from the oberver
constellation
blue shift
astronomical unit (AU)
Jovian planet
5. The name of our galaxy - a spiral galaxy that contains about 400 billion stars
milky way galaxy
the big crunch
Tycho Brahe
Galileo Galilei
6. Light distance travels in one year (9.5 trillion km)
spiral galaxy
light-year
pulsar
wavelength
7. Large group of stars - dust - and gas held together by gravity; can be elliptical - spiral - or irregular
galaxy
reflecting telescope
apogee
coma
8. Radiation left over from the beginning of the universe
solstace
Jovian planet
background radiation
parallax
9. A spectrum of light in which there are no gaps - so that each region blends directly into the next
lunar eclipse
coma
blue shift
continuous spectrum
10. The formation of a celestial object by the effect of gravity pulling together surrounding objects and gases
absolute magnitude
accretion
Johannes Kepler
Hertzsprung-Russel Diagram
11. The distance between crests of waves - such as those of the electromagnetic spectrum
galaxy cluster
red shift
wavelength
Kuiper Belt
12. A model of the solar system in which Earth and the other planets revolve around the sun
nova
heliocentric
Jovian planet
moon
13. A spherical region of comets that surrounds the solar system
heliocentric
Oort Cloud
background radiation
retrograde motion
14. Change in the apparent frequency of a wave as observer and source move toward or away from each other
doppler effect
asteroid
light-year
binary star
15. A particle of electromagnetic radiation having zero mass and carrying a quantum of energy
blue shift
perigee
photon
nebula
16. Light distance travels in one year (9.5 trillion km)
electromagnetic spectrum
blue shift
light-year
Johannes Kepler
17. Stony or metallic object that is the remains of a meteoroid that has reached the earth's surface
milky way galaxy
Galileo Galilei
meteorite
red shift
18. Influenced by Copernicus; Built observatory and collected data on the locations of stars and planets for over 20 years
planet
big bang theory
Tycho Brahe
galaxy cluster
19. An enormously bright - distant galaxy with a giant black hole at its center
quasar
milky way galaxy
nebula
apogee
20. The name of our galaxy - a spiral galaxy that contains about 400 billion stars
perhelion
milky way galaxy
planetesimal
galaxy cluster
21. A star that expands and cools once it runs out of hydrogen fuel
protostar
red giant
Hubble's law
Nicolaus Copernicus
22. The motion of a spinning body (as a top) in which it wobbles so that the axis of rotation sweeps out a cone
Tycho Brahe
coma
precession
comet
23. Any of numerous small celestial bodies composed of rock and metal that move around the sun (mainly between the orbits of Mars and Jupiter)
astronomical unit (AU)
absolute magnitude
asteroid
Kuiper Belt
24. The luminous cloud of particles surrounding the frozen nucleus of a comet
reflecting telescope
coma
astronomical unit (AU)
milky way galaxy
25. A faint star of enormous density
white dwarf
aphelion
aphelion
spectroscopy
26. The study of the universe
blue shift
solstace
astronomy
protostar
27. The elliptical motion of a body as it orbits another body in space
apogee
terrestrial planet
evolution
apogee
28. Planet with a solid - rocky crust; more dense; Inner planet. Mercury - Venus - Earth - Mars
galaxy
radio telescope
nebula
terrestrial planet
29. 23.5° - the reason we have seasons
30. Planets with low densities and are huge gas giants. Jupiter - Saturn - Uranus - Neptune
planet
cepheid variable
continuous spectrum
Jovian planet
31. Stony or metallic object that is the remains of a meteoroid that has reached the earth's surface
the big crunch
Claudius Ptolemy
emission spectrum
meteorite
32. An extremely bright star of very large diameter and low density
radio telescope
solstace
supergiant
nebulae
33. A graph relating the temperature and brightness of stars
nebula
Hertzsprung-Russel Diagram
reflecting telescope
pulsar
34. Chunk of rock or dust in space
emission spectrum
meteroid
moon
white dwarf
35. A spherical region of comets that surrounds the solar system
Oort Cloud
the big crunch
cepheid variable
coma
36. Point in orbit that is closest to the sun - planet moves faster
meteor
emission spectrum
nebula
perhelion
37. One of the small asteroid-like bodies that formed the building blocks of the planets
wavelength
Hubble's law
irregular galaxy
planetesimal
38. A system of two stars that revolve around each other under their mutual gravitation
red giant
the big crunch
Hertzsprung-Russel Diagram
binary star
39. Astronomical telescope that picks up electromagnetic radiations in the radio-frequency range from extra-terrestrial sources
white dwarf
Jovian planet
radio telescope
meteor
40. The spectrum of electromagnetic radiation that has passed through a medium that absorbed radiation of certain wavelengths
absorption spectrum
pulsar
moon
aphelion
41. The theory that states that gravity will over come the expansion of the universe and bring everything together in an implosion
elliptical galaxy
the big crunch
red giant
geocentric
42. The small - dense remains of a high-mass star after a supernova
neutron star
protostar
Kuiper Belt
galaxy cluster
43. A spectrum of light in which there are no gaps - so that each region blends directly into the next
background radiation
continuous spectrum
terrestrial planet
phases of the moon
44. A faint star of enormous density
nova
quasar
electromagnetic spectrum
white dwarf
45. Point of moon's orbit when it is nearest the earth
Nicolaus Copernicus
perigee
supergiant
evolution
46. Polish astronomer who produced a workable model of the solar system with the sun in the center (1473-1543)
meteorite
Nicolaus Copernicus
phases of the moon
Johannes Kepler
47. One of the small asteroid-like bodies that formed the building blocks of the planets
planetesimal
red giant
pulsar
geocentric
48. Change in the apparent frequency of a wave as observer and source move toward or away from each other
Jovian planet
Galileo Galilei
rotation
doppler effect
49. 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
meteroid
quasar
astronomical unit (AU)
50. Any of the small solid extraterrestrial bodies that hits the earth's atmosphere
galaxy
chromatic abberation
apogee
meteor