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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 faint star of enormous density
red giant
blue shift
apogee
white dwarf
2. A spectrum of light in which there are no gaps - so that each region blends directly into the next
absorption spectrum
terrestrial planet
protostar
continuous spectrum
3. A model of the universe based on the assumption that the sun - moon - and planets all orbit Earth
absorption spectrum
blue shift
geocentric
galaxy
4. The place in the orbit of a planet where the planet is farthest from the sun
moon
Hubble Space Telescope
aphelion
galaxy
5. A contracting cloud of gas and dust with enough mass to form a star
Halley's Comet
ellipse
nova
protostar
6. The luminous cloud of particles surrounding the frozen nucleus of a comet
rotation
coma
photon
Nicolaus Copernicus
7. The two days of the year on which neither hemisphere is tilted toward or away from the sun
terrestrial planet
absolute magnitude
equinox
red shift
8. A faint star of enormous density
Jovian planet
binary star
blue shift
white dwarf
9. The farther away a galaxy is - the faster it is moving away
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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)
Galileo Galilei
asteroid
white dwarf
spiral galaxy
11. A star that falls into the main sequence category on the H-are diagram
galaxy cluster
main-sequence star
cepheid variable
planetesimal
12. Massive clouds of dust and gases where stars are born
Tycho Brahe
nebulae
apparent magnitude
red shift
13. The study of the spectra of stars by analyzing the spectral properties of the light they give off
red shift
spectroscopy
meteorite
constellation
14. When the moon passes between earth and the sun - blocking the sunlight from reaching earth
solar eclipse
element
Claudius Ptolemy
nebula
15. A star that falls into the main sequence category on the H-are diagram
Hertzsprung-Russel Diagram
main-sequence star
blue shift
local group
16. A spectrum of light in which there are no gaps - so that each region blends directly into the next
Claudius Ptolemy
red shift
galaxy cluster
continuous spectrum
17. The apparent westward motion of the planets with respect to the stars
heliocentric
retrograde motion
Tycho Brahe
perhelion
18. Influenced by Copernicus; Built observatory and collected data on the locations of stars and planets for over 20 years
Halley's Comet
pulsar
Tycho Brahe
Jovian planet
19. A telescope that uses a curved mirror to collect and focus light
reflecting telescope
Hertzsprung-Russel Diagram
continuous spectrum
cepheid variable
20. A particle of electromagnetic radiation having zero mass and carrying a quantum of energy
photon
evolution
phases of the moon
planet
21. A group of about 30 galaxies that includes the Milky Way
spiral galaxy
local group
cepheid variable
constellation
22. When the moon passes between earth and the sun - blocking the sunlight from reaching earth
perhelion
pulsar
main-sequence star
solar eclipse
23. Any substance that cannot be broken down into simpler substances
doppler effect
constellation
element
electromagnetic spectrum
24. An elongated circle - or oval shape - the shape of the planets orbit
heliocentric
red shift
ellipse
astronomical unit (AU)
25. The apparent change in position of an object when seen from different places
milky way galaxy
terrestrial planet
perigee
parallax
26. The rainbow effect when light is dispersed through lens
chromatic abberation
red dwarf
planet
comet
27. A galaxy with a bulge in the middle and arms that spiral outward in a pinwheel pattern
Claudius Ptolemy
light-year
spiral galaxy
Kuiper Belt
28. A model of the solar system in which Earth and the other planets revolve around the sun
heliocentric
light-year
nebula
supernova
29. The most distant point in the orbit of the moon
perigee
moon
apogee
protostar
30. A group of stars that form a pattern in the sky
constellation
meteroid
local group
spiral galaxy
31. Planets with low densities and are huge gas giants. Jupiter - Saturn - Uranus - Neptune
neutron star
irregular galaxy
planetesimal
Jovian planet
32. The comet discovered in 1705 that repeats itself every 76 years and last appeared in 1986.
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33. Explained movement of planets with retrograde motion
Hubble's law
supernova
nebula
Claudius Ptolemy
34. The rainbow effect when light is dispersed through lens
meteorite
chromatic abberation
absorption spectrum
main-sequence star
35. An immense cloud of gas (mainly hydrogen) and dust in interstellar space
elliptical galaxy
nova
reflecting telescope
nebula
36. A large cloud of dust and gas that can break apart into smaller pieces and form stars
nebula
reflecting telescope
blue shift
Tycho Brahe
37. The brilliant explosion of a dying supergiant star
supernova
galaxy
pulsar
white dwarf
38. A faint star of enormous density
heliocentric
Hubble Space Telescope
spiral galaxy
white dwarf
39. Planets with low densities and are huge gas giants. Jupiter - Saturn - Uranus - Neptune
Jovian planet
binary star
planetesimal
precession
40. Astronomical telescope that picks up electromagnetic radiations in the radio-frequency range from extra-terrestrial sources
background radiation
retrograde motion
radio telescope
planetesimal
41. A variable star that brightens and dims regularly - or pulses - and whose distance can be determined from its period of pulsation
supergiant
Johannes Kepler
red dwarf
cepheid variable
42. The blocking of sunlight to the moon that occurs when Earth is directly between the sun and the moon
Hubble's law
doppler effect
supergiant
lunar eclipse
43. The brilliant explosion of a dying supergiant star
supernova
lunar eclipse
spiral galaxy
Galileo Galilei
44. A contracting cloud of gas and dust with enough mass to form a star
big bang theory
pulsar
precession
protostar
45. A region of the solar system that is just beyond the orbit of neptune and that contains small bodies made mostly of ice
perigee
Kuiper Belt
comet
solar eclipse
46. Change in the apparent frequency of a wave as observer and source move toward or away from each other
Halley's Comet
Jovian planet
aphelion
doppler effect
47. The study of the spectra of stars by analyzing the spectral properties of the light they give off
absolute magnitude
moon
Oort Cloud
spectroscopy
48. A model of the solar system in which Earth and the other planets revolve around the sun
astronomical unit (AU)
electromagnetic spectrum
heliocentric
Jovian planet
49. The increase in wavelength of light due to an object moving away from the observer
wavelength
retrograde motion
red shift
binary star
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
perigee
Sir Isaac Newton
nova
comet