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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 contracting cloud of gas and dust with enough mass to form a star
solar eclipse
precession
protostar
Jovian planet
2. The two days of the year on which neither hemisphere is tilted toward or away from the sun
nebula
equinox
binary star
evolution
3. A particle of electromagnetic radiation having zero mass and carrying a quantum of energy
Sir Isaac Newton
neutron star
continuous spectrum
photon
4. The luminous cloud of particles surrounding the frozen nucleus of a comet
coma
red shift
heliocentric
Nicolaus Copernicus
5. Large group of stars - dust - and gas held together by gravity; can be elliptical - spiral - or irregular
apparent magnitude
nebulae
Hubble's law
galaxy
6. The study of the spectra of stars by analyzing the spectral properties of the light they give off
Hubble's law
spectroscopy
ellipse
astronomy
7. The spinning of Earth on its axis
rotation
heliocentric
Tycho Brahe
phases of the moon
8. Astronomical telescope that picks up electromagnetic radiations in the radio-frequency range from extra-terrestrial sources
red shift
accretion
constellation
radio telescope
9. Varying amounts of the lighted moon as seen from earth
photon
phases of the moon
equinox
emission spectrum
10. A group of about 30 galaxies that includes the Milky Way
local group
equinox
constellation
astronomical unit (AU)
11. Galaxy with no particular shape - contains new & old stars
irregular galaxy
Hertzsprung-Russel Diagram
perigee
universal gravitation
12. A spectrum of light in which there are no gaps - so that each region blends directly into the next
continuous spectrum
the big crunch
Claudius Ptolemy
irregular galaxy
13. The rainbow effect when light is dispersed through lens
Claudius Ptolemy
chromatic abberation
precession
radio telescope
14. A faint star of enormous density
black hole
comet
wavelength
white dwarf
15. Change in the apparent frequency of a wave as observer and source move toward or away from each other
nebula
supergiant
doppler effect
perigee
16. A spherical region of comets that surrounds the solar system
white dwarf
nebulae
Oort Cloud
background radiation
17. Massive clouds of dust and gases where stars are born
nebulae
phases of the moon
elliptical galaxy
cepheid variable
18. When the northern or southern most point on earth receives the most sun because the earth is tilted toward the sun
big bang theory
precession
solstace
accretion
19. A measure of the amount of light that a star actually emits
white dwarf
Johannes Kepler
constellation
absolute magnitude
20. Any natural satellite of a planet
moon
planetesimal
red shift
meteroid
21. The average distance between the Earth and the sun - or approximately 150000000 km
white dwarf
astronomical unit (AU)
big bang theory
Johannes Kepler
22. Influenced by Copernicus; Built observatory and collected data on the locations of stars and planets for over 20 years
elliptical galaxy
Hubble's law
equinox
Tycho Brahe
23. The most distant point in the orbit of the moon
meteor
apogee
rotation
ellipse
24. 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
Claudius Ptolemy
lunar eclipse
supergiant
25. The rainbow effect when light is dispersed through lens
reflecting telescope
chromatic abberation
red giant
background radiation
26. A galaxy with a bulge in the middle and arms that spiral outward in a pinwheel pattern
spiral galaxy
doppler effect
asteroid
light-year
27. Any substance that cannot be broken down into simpler substances
element
heliocentric
spectroscopy
big bang theory
28. The apparent change in position of an object when seen from different places
solstace
lunar eclipse
parallax
constellation
29. Chunk of rock or dust in space
red shift
meteroid
Galileo Galilei
heliocentric
30. The farther away a galaxy is - the faster it is moving away
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31. A spectrum of light in which there are no gaps - so that each region blends directly into the next
continuous spectrum
ellipse
supernova
Oort Cloud
32. Spectrum of electromagnetic radiation emitted by a self-luminous source
white dwarf
emission spectrum
meteroid
apparent magnitude
33. A model of the solar system in which Earth and the other planets revolve around the sun
Hertzsprung-Russel Diagram
pulsar
Halley's Comet
heliocentric
34. A galaxy shaped like a flattened ball - containing only old stars
nebula
ellipse
elliptical galaxy
white dwarf
35. The increase in wavelength of light due to an object moving away from the observer
quasar
absorption spectrum
red shift
irregular galaxy
36. One of the small asteroid-like bodies that formed the building blocks of the planets
black hole
Tycho Brahe
moon
planetesimal
37. The name of our galaxy - a spiral galaxy that contains about 400 billion stars
Sir Isaac Newton
milky way galaxy
planetesimal
phases of the moon
38. An immense cloud of gas (mainly hydrogen) and dust in interstellar space
quasar
universal gravitation
light-year
nebula
39. The place in the orbit of a planet where the planet is farthest from the sun
accretion
Nicolaus Copernicus
planetesimal
aphelion
40. Explained movement of planets with retrograde motion
Nicolaus Copernicus
doppler effect
ellipse
Claudius Ptolemy
41. Large group of stars - dust - and gas held together by gravity; can be elliptical - spiral - or irregular
galaxy
refracting telescope
universal gravitation
irregular galaxy
42. A group of stars that form a pattern in the sky
universal gravitation
constellation
perhelion
Hubble Space Telescope
43. A faint star of enormous density
white dwarf
spiral galaxy
main-sequence star
Hubble Space Telescope
44. The decrease in wavelength of light due to an object moving away from the oberver
refracting telescope
blue shift
evolution
milky way galaxy
45. A graph relating the temperature and brightness of stars
elliptical galaxy
planet
Hubble Space Telescope
Hertzsprung-Russel Diagram
46. Influenced by Copernicus; Built observatory and collected data on the locations of stars and planets for over 20 years
elliptical galaxy
Johannes Kepler
Tycho Brahe
neutron star
47. English mathematician and physicist - discovered the law of universal gravitation
black hole
big bang theory
apparent magnitude
Sir Isaac Newton
48. A faint star of enormous density
asteroid
white dwarf
red shift
rotation
49. A region of the solar system that is just beyond the orbit of neptune and that contains small bodies made mostly of ice
blue shift
terrestrial planet
Kuiper Belt
background radiation
50. A galaxy shaped like a flattened ball - containing only old stars
Galileo Galilei
spectroscopy
evolution
elliptical galaxy
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