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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 star that expands and cools once it runs out of hydrogen fuel
Kuiper Belt
red giant
constellation
wavelength
2. A model of the solar system in which Earth and the other planets revolve around the sun
planet
accretion
heliocentric
precession
3. Galaxy with no particular shape - contains new & old stars
earth's tilt
moon
irregular galaxy
meteroid
4. The distance between crests of waves - such as those of the electromagnetic spectrum
binary star
wavelength
spiral galaxy
electromagnetic spectrum
5. A very small star with low temperature - reddish in color
red dwarf
background radiation
Hubble's law
Nicolaus Copernicus
6. A system of two stars that revolve around each other under their mutual gravitation
cepheid variable
Oort Cloud
binary star
absorption spectrum
7. A measure of the amount of light that a star actually emits
spectroscopy
blue shift
absolute magnitude
Hubble's law
8. The spectrum of electromagnetic radiation that has passed through a medium that absorbed radiation of certain wavelengths
apogee
absorption spectrum
spectroscopy
accretion
9. The rainbow effect when light is dispersed through lens
lunar eclipse
Jovian planet
chromatic abberation
solstace
10. 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
meteor
continuous spectrum
main-sequence star
11. 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
background radiation
black hole
comet
Hubble Space Telescope
12. Astronomical telescope that picks up electromagnetic radiations in the radio-frequency range from extra-terrestrial sources
emission spectrum
radio telescope
the big crunch
astronomy
13. Influenced by Copernicus; Built observatory and collected data on the locations of stars and planets for over 20 years
geocentric
Tycho Brahe
background radiation
spectroscopy
14. Point in orbit that is closest to the sun - planet moves faster
accretion
astronomical unit (AU)
perhelion
nebula
15. The two days of the year on which neither hemisphere is tilted toward or away from the sun
doppler effect
supergiant
binary star
equinox
16. A system of galaxies containing from several to thousands of member galaxies
lunar eclipse
nebula
galaxy cluster
perigee
17. Stony or metallic object that is the remains of a meteoroid that has reached the earth's surface
electromagnetic spectrum
spiral galaxy
earth's tilt
meteorite
18. The luminous cloud of particles surrounding the frozen nucleus of a comet
pulsar
coma
asteroid
meteroid
19. Planets with low densities and are huge gas giants. Jupiter - Saturn - Uranus - Neptune
parallax
blue shift
Jovian planet
cepheid variable
20. A large body in space that orbits a star and does not produce light of its own
main-sequence star
Tycho Brahe
planet
white dwarf
21. The theory that states that gravity will over come the expansion of the universe and bring everything together in an implosion
Johannes Kepler
the big crunch
spectroscopy
neutron star
22. A spherical region of comets that surrounds the solar system
Oort Cloud
continuous spectrum
binary star
element
23. Explained movement of planets with retrograde motion
Claudius Ptolemy
accretion
the big crunch
meteorite
24. Remnant of a star that is so dense that nothing - not even light - can escape its gravity field
spectroscopy
supernova
black hole
blue shift
25. A group of about 30 galaxies that includes the Milky Way
local group
spectroscopy
meteroid
ellipse
26. A large body in space that orbits a star and does not produce light of its own
constellation
planet
chromatic abberation
nebula
27. A star that ejects some of its material in the form of a cloud and become more luminous in the process
nova
perhelion
Hubble's law
black hole
28. A graph relating the temperature and brightness of stars
chromatic abberation
Oort Cloud
Hertzsprung-Russel Diagram
cepheid variable
29. A particle of electromagnetic radiation having zero mass and carrying a quantum of energy
pulsar
pulsar
equinox
photon
30. The study of the universe
astronomy
white dwarf
parallax
galaxy
31. A spectrum of light in which there are no gaps - so that each region blends directly into the next
Sir Isaac Newton
terrestrial planet
nova
continuous spectrum
32. A galaxy with a bulge in the middle and arms that spiral outward in a pinwheel pattern
moon
emission spectrum
refracting telescope
spiral galaxy
33. Optical telescope that has a large convex lens that produces an image that is viewed through the eyepiece
refracting telescope
Jovian planet
big bang theory
coma
34. A model of the solar system in which Earth and the other planets revolve around the sun
heliocentric
white dwarf
big bang theory
equinox
35. The study of the spectra of stars by analyzing the spectral properties of the light they give off
Kuiper Belt
milky way galaxy
perigee
spectroscopy
36. Light distance travels in one year (9.5 trillion km)
nebula
continuous spectrum
light-year
doppler effect
37. Planet with a solid - rocky crust; more dense; Inner planet. Mercury - Venus - Earth - Mars
continuous spectrum
red shift
terrestrial planet
Sir Isaac Newton
38. The motion of a spinning body (as a top) in which it wobbles so that the axis of rotation sweeps out a cone
precession
accretion
big bang theory
irregular galaxy
39. The small - dense remains of a high-mass star after a supernova
neutron star
Tycho Brahe
the big crunch
red shift
40. A group of stars that form a pattern in the sky
doppler effect
ellipse
heliocentric
constellation
41. One of the small asteroid-like bodies that formed the building blocks of the planets
astronomy
elliptical galaxy
equinox
planetesimal
42. When the northern or southern most point on earth receives the most sun because the earth is tilted toward the sun
rotation
constellation
black hole
solstace
43. A particle of electromagnetic radiation having zero mass and carrying a quantum of energy
big bang theory
lunar eclipse
photon
Hertzsprung-Russel Diagram
44. A group of about 30 galaxies that includes the Milky Way
radio telescope
white dwarf
local group
pulsar
45. The average distance between the Earth and the sun - or approximately 150000000 km
astronomical unit (AU)
element
Hubble's law
nebula
46. Radiation left over from the beginning of the universe
galaxy
background radiation
galaxy cluster
neutron star
47. Chunk of rock or dust in space
reflecting telescope
protostar
meteroid
asteroid
48. The brightness of a star when viewed from Earth
accretion
Tycho Brahe
quasar
apparent magnitude
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
Johannes Kepler
Jovian planet
light-year
50. 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
absorption spectrum
background radiation
main-sequence star