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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. 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
protostar
red shift
asteroid
universal gravitation
2. Spectrum of electromagnetic radiation emitted by a self-luminous source
supernova
nova
nebula
emission spectrum
3. The average distance between the Earth and the sun - or approximately 150000000 km
photon
astronomical unit (AU)
rotation
aphelion
4. Light distance travels in one year (9.5 trillion km)
absolute magnitude
ellipse
light-year
nova
5. An enormously bright - distant galaxy with a giant black hole at its center
spiral galaxy
absolute magnitude
Kuiper Belt
quasar
6. The decrease in wavelength of light due to an object moving away from the oberver
blue shift
Galileo Galilei
asteroid
quasar
7. The farther away a galaxy is - the faster it is moving away
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8. An elongated circle - or oval shape - the shape of the planets orbit
lunar eclipse
pulsar
ellipse
white dwarf
9. The luminous cloud of particles surrounding the frozen nucleus of a comet
elliptical galaxy
coma
lunar eclipse
reflecting telescope
10. Optical telescope that has a large convex lens that produces an image that is viewed through the eyepiece
reflecting telescope
refracting telescope
galaxy
radio telescope
11. An immense cloud of gas (mainly hydrogen) and dust in interstellar space
nebula
Nicolaus Copernicus
radio telescope
coma
12. A star that expands and cools once it runs out of hydrogen fuel
red giant
Kuiper Belt
ellipse
nova
13. The motion of a spinning body (as a top) in which it wobbles so that the axis of rotation sweeps out a cone
galaxy
Oort Cloud
precession
binary star
14. Influenced by Copernicus; Built observatory and collected data on the locations of stars and planets for over 20 years
Sir Isaac Newton
phases of the moon
Tycho Brahe
element
15. A measure of the amount of light that a star actually emits
Kuiper Belt
meteorite
absolute magnitude
moon
16. A spherical region of comets that surrounds the solar system
radio telescope
cepheid variable
Oort Cloud
nebula
17. The farther away a galaxy is - the faster it is moving away
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18. An enormously bright - distant galaxy with a giant black hole at its center
Hubble Space Telescope
Kuiper Belt
big bang theory
quasar
19. The increase in wavelength of light due to an object moving away from the observer
galaxy cluster
nebula
red shift
Galileo Galilei
20. Point in orbit that is closest to the sun - planet moves faster
ellipse
asteroid
red dwarf
perhelion
21. Planets with low densities and are huge gas giants. Jupiter - Saturn - Uranus - Neptune
spectroscopy
evolution
Jovian planet
perigee
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
parallax
big bang theory
emission spectrum
Johannes Kepler
23. The theory that states that gravity will over come the expansion of the universe and bring everything together in an implosion
spiral galaxy
planetesimal
the big crunch
meteor
24. A faint star of enormous density
Galileo Galilei
planetesimal
Nicolaus Copernicus
white dwarf
25. The two days of the year on which neither hemisphere is tilted toward or away from the sun
the big crunch
solstace
local group
equinox
26. An extremely bright star of very large diameter and low density
supergiant
astronomy
refracting telescope
accretion
27. A spectrum of light in which there are no gaps - so that each region blends directly into the next
continuous spectrum
nebula
terrestrial planet
perigee
28. Galaxy with no particular shape - contains new & old stars
irregular galaxy
aphelion
electromagnetic spectrum
absolute magnitude
29. The motion of a spinning body (as a top) in which it wobbles so that the axis of rotation sweeps out a cone
doppler effect
Hubble's law
rotation
precession
30. Varying amounts of the lighted moon as seen from earth
red shift
constellation
solstace
phases of the moon
31. Planet with a solid - rocky crust; more dense; Inner planet. Mercury - Venus - Earth - Mars
terrestrial planet
red shift
protostar
black hole
32. The study of the spectra of stars by analyzing the spectral properties of the light they give off
ellipse
nebula
spectroscopy
doppler effect
33. Any of the small solid extraterrestrial bodies that hits the earth's atmosphere
meteor
reflecting telescope
Sir Isaac Newton
earth's tilt
34. A galaxy with a bulge in the middle and arms that spiral outward in a pinwheel pattern
element
blue shift
white dwarf
spiral galaxy
35. A system of two stars that revolve around each other under their mutual gravitation
binary star
rotation
main-sequence star
elliptical galaxy
36. The study of the universe
Johannes Kepler
spectroscopy
astronomy
nova
37. The spectrum of electromagnetic radiation that has passed through a medium that absorbed radiation of certain wavelengths
big bang theory
perigee
absorption spectrum
retrograde motion
38. The place in the orbit of a planet where the planet is farthest from the sun
aphelion
photon
Hertzsprung-Russel Diagram
element
39. An elongated circle - or oval shape - the shape of the planets orbit
ellipse
Kuiper Belt
nebula
white dwarf
40. The distance between crests of waves - such as those of the electromagnetic spectrum
wavelength
red dwarf
protostar
protostar
41. Any substance that cannot be broken down into simpler substances
absolute magnitude
planet
element
Claudius Ptolemy
42. The apparent change in position of an object when seen from different places
Claudius Ptolemy
parallax
astronomy
Hubble's law
43. Brahe's assistant - German astronomer who first discovered the three laws of planetary motion (1571-1630)
asteroid
element
reflecting telescope
Johannes Kepler
44. 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.
moon
cepheid variable
Galileo Galilei
meteor
45. Stony or metallic object that is the remains of a meteoroid that has reached the earth's surface
nebulae
apparent magnitude
meteorite
astronomical unit (AU)
46. Any substance that cannot be broken down into simpler substances
background radiation
element
background radiation
red dwarf
47. 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
comet
reflecting telescope
spectroscopy
neutron star
48. The study of the universe
Hertzsprung-Russel Diagram
astronomy
elliptical galaxy
Jovian planet
49. Galaxy with no particular shape - contains new & old stars
astronomical unit (AU)
emission spectrum
local group
irregular galaxy
50. The spinning of Earth on its axis
rotation
perigee
Hertzsprung-Russel Diagram
supergiant