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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 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
red dwarf
planet
big bang theory
Sir Isaac Newton
2. Planets with low densities and are huge gas giants. Jupiter - Saturn - Uranus - Neptune
rotation
universal gravitation
Jovian planet
terrestrial planet
3. When the moon passes between earth and the sun - blocking the sunlight from reaching earth
geocentric
solar eclipse
chromatic abberation
white dwarf
4. Point of moon's orbit when it is nearest the earth
perigee
neutron star
astronomical unit (AU)
red shift
5. The brilliant explosion of a dying supergiant star
universal gravitation
protostar
supernova
big bang theory
6. The study of the universe
binary star
Galileo Galilei
apparent magnitude
astronomy
7. A galaxy shaped like a flattened ball - containing only old stars
terrestrial planet
elliptical galaxy
heliocentric
accretion
8. A graph relating the temperature and brightness of stars
astronomical unit (AU)
Hertzsprung-Russel Diagram
parallax
Kuiper Belt
9. Chunk of rock or dust in space
coma
spectroscopy
meteroid
neutron star
10. The farther away a galaxy is - the faster it is moving away
11. 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.
solstace
solstace
red giant
Galileo Galilei
12. Galaxy with no particular shape - contains new & old stars
irregular galaxy
rotation
solar eclipse
reflecting telescope
13. Explained movement of planets with retrograde motion
local group
red dwarf
pulsar
Claudius Ptolemy
14. A star that falls into the main sequence category on the H-are diagram
main-sequence star
reflecting telescope
big bang theory
red shift
15. A telescope that uses a curved mirror to collect and focus light
white dwarf
Sir Isaac Newton
reflecting telescope
Johannes Kepler
16. An elongated circle - or oval shape - the shape of the planets orbit
ellipse
milky way galaxy
binary star
red shift
17. Point in orbit that is closest to the sun - planet moves faster
ellipse
big bang theory
perhelion
heliocentric
18. 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
astronomical unit (AU)
continuous spectrum
red shift
19. A measure of the amount of light that a star actually emits
big bang theory
absolute magnitude
meteorite
ellipse
20. Planets with low densities and are huge gas giants. Jupiter - Saturn - Uranus - Neptune
refracting telescope
coma
elliptical galaxy
Jovian planet
21. Astronomical telescope that picks up electromagnetic radiations in the radio-frequency range from extra-terrestrial sources
refracting telescope
universal gravitation
supernova
radio telescope
22. A group of about 30 galaxies that includes the Milky Way
earth's tilt
perhelion
local group
meteor
23. The apparent change in position of an object when seen from different places
apparent magnitude
nebula
supernova
parallax
24. Astronomical telescope that picks up electromagnetic radiations in the radio-frequency range from extra-terrestrial sources
white dwarf
refracting telescope
Sir Isaac Newton
radio telescope
25. A faint star of enormous density
light-year
heliocentric
Tycho Brahe
white dwarf
26. Change in the apparent frequency of a wave as observer and source move toward or away from each other
Hertzsprung-Russel Diagram
Johannes Kepler
doppler effect
red shift
27. A large body in space that orbits a star and does not produce light of its own
planet
background radiation
neutron star
planetesimal
28. The two days of the year on which neither hemisphere is tilted toward or away from the sun
equinox
black hole
Nicolaus Copernicus
refracting telescope
29. Massive clouds of dust and gases where stars are born
white dwarf
galaxy
pulsar
nebulae
30. An enormously bright - distant galaxy with a giant black hole at its center
heliocentric
red giant
Hubble's law
quasar
31. The small - dense remains of a high-mass star after a supernova
galaxy cluster
neutron star
planetesimal
terrestrial planet
32. A model of the universe based on the assumption that the sun - moon - and planets all orbit Earth
solstace
geocentric
constellation
astronomy
33. Polish astronomer who produced a workable model of the solar system with the sun in the center (1473-1543)
Hubble Space Telescope
Nicolaus Copernicus
perhelion
absorption spectrum
34. A particle of electromagnetic radiation having zero mass and carrying a quantum of energy
Hubble Space Telescope
chromatic abberation
Hubble's law
photon
35. The decrease in wavelength of light due to an object moving away from the oberver
spiral galaxy
Oort Cloud
heliocentric
blue shift
36. An immense cloud of gas (mainly hydrogen) and dust in interstellar space
Oort Cloud
radio telescope
astronomy
nebula
37. 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
meteorite
absolute magnitude
universal gravitation
red dwarf
38. A star that ejects some of its material in the form of a cloud and become more luminous in the process
earth's tilt
galaxy cluster
the big crunch
nova
39. The name of our galaxy - a spiral galaxy that contains about 400 billion stars
rotation
nebula
evolution
milky way galaxy
40. A galaxy shaped like a flattened ball - containing only old stars
lunar eclipse
elliptical galaxy
element
rotation
41. Varying amounts of the lighted moon as seen from earth
meteor
ellipse
binary star
phases of the moon
42. Explained movement of planets with retrograde motion
astronomy
Galileo Galilei
lunar eclipse
Claudius Ptolemy
43. The brightness of a star when viewed from Earth
apparent magnitude
Hubble's law
light-year
heliocentric
44. Influenced by Copernicus; Built observatory and collected data on the locations of stars and planets for over 20 years
background radiation
Tycho Brahe
electromagnetic spectrum
nebula
45. The increase in wavelength of light due to an object moving away from the observer
nova
radio telescope
spiral galaxy
red shift
46. A graph relating the temperature and brightness of stars
doppler effect
Hertzsprung-Russel Diagram
nebulae
continuous spectrum
47. The spinning of Earth on its axis
supernova
Jovian planet
rotation
nebula
48. Any of numerous small celestial bodies composed of rock and metal that move around the sun (mainly between the orbits of Mars and Jupiter)
Hubble's law
asteroid
main-sequence star
perhelion
49. Spectrum of electromagnetic radiation emitted by a self-luminous source
retrograde motion
Hertzsprung-Russel Diagram
terrestrial planet
emission spectrum
50. The place in the orbit of a planet where the planet is farthest from the sun
solar eclipse
coma
spectroscopy
aphelion