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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 states that gravity will over come the expansion of the universe and bring everything together in an implosion
meteorite
the big crunch
Hertzsprung-Russel Diagram
planet
2. The motion of a spinning body (as a top) in which it wobbles so that the axis of rotation sweeps out a cone
red shift
Hubble Space Telescope
precession
red shift
3. Planets with low densities and are huge gas giants. Jupiter - Saturn - Uranus - Neptune
Hubble's law
Jovian planet
ellipse
equinox
4. 23.5° - the reason we have seasons
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5. Light distance travels in one year (9.5 trillion km)
Hubble's law
light-year
radio telescope
blue shift
6. A group of stars that form a pattern in the sky
photon
constellation
local group
light-year
7. English mathematician and physicist - discovered the law of universal gravitation
Sir Isaac Newton
black hole
main-sequence star
universal gravitation
8. A variable star that brightens and dims regularly - or pulses - and whose distance can be determined from its period of pulsation
cepheid variable
moon
irregular galaxy
milky way galaxy
9. 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
background radiation
Kuiper Belt
nebula
10. A star that ejects some of its material in the form of a cloud and become more luminous in the process
accretion
retrograde motion
nova
planetesimal
11. Astronomical telescope that picks up electromagnetic radiations in the radio-frequency range from extra-terrestrial sources
radio telescope
pulsar
elliptical galaxy
phases of the moon
12. Change in the apparent frequency of a wave as observer and source move toward or away from each other
spectroscopy
reflecting telescope
doppler effect
lunar eclipse
13. A space telescope and camera named for a famous astronaut (Edward Hubble) used to study space elements
Hubble Space Telescope
moon
heliocentric
apogee
14. A group of stars that form a pattern in the sky
red dwarf
constellation
Galileo Galilei
red shift
15. The small - dense remains of a high-mass star after a supernova
supernova
neutron star
retrograde motion
absorption spectrum
16. Explained movement of planets with retrograde motion
the big crunch
Claudius Ptolemy
wavelength
white dwarf
17. A space telescope and camera named for a famous astronaut (Edward Hubble) used to study space elements
neutron star
Hubble Space Telescope
galaxy cluster
nebula
18. A rapidly spinning neutron star that produces radio waves
Tycho Brahe
pulsar
local group
precession
19. A star that ejects some of its material in the form of a cloud and become more luminous in the process
moon
evolution
cepheid variable
nova
20. The rainbow effect when light is dispersed through lens
supernova
protostar
chromatic abberation
comet
21. The name of our galaxy - a spiral galaxy that contains about 400 billion stars
retrograde motion
galaxy cluster
milky way galaxy
equinox
22. The small - dense remains of a high-mass star after a supernova
neutron star
supernova
Kuiper Belt
Nicolaus Copernicus
23. One of the small asteroid-like bodies that formed the building blocks of the planets
neutron star
apogee
big bang theory
planetesimal
24. A faint star of enormous density
Tycho Brahe
Oort Cloud
white dwarf
absorption spectrum
25. A galaxy shaped like a flattened ball - containing only old stars
comet
elliptical galaxy
aphelion
Hubble's law
26. A faint star of enormous density
neutron star
emission spectrum
white dwarf
terrestrial planet
27. 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
spectroscopy
absolute magnitude
astronomical unit (AU)
comet
28. Planet with a solid - rocky crust; more dense; Inner planet. Mercury - Venus - Earth - Mars
terrestrial planet
electromagnetic spectrum
Hubble Space Telescope
heliocentric
29. Point of moon's orbit when it is nearest the earth
absolute magnitude
photon
absolute magnitude
perigee
30. Radiation left over from the beginning of the universe
terrestrial planet
galaxy cluster
background radiation
Nicolaus Copernicus
31. Remnant of a star that is so dense that nothing - not even light - can escape its gravity field
black hole
galaxy cluster
Jovian planet
phases of the moon
32. Explained movement of planets with retrograde motion
radio telescope
Halley's Comet
Claudius Ptolemy
irregular galaxy
33. A graph relating the temperature and brightness of stars
Hertzsprung-Russel Diagram
cepheid variable
light-year
protostar
34. A very small star with low temperature - reddish in color
reflecting telescope
red dwarf
main-sequence star
solar eclipse
35. 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
spiral galaxy
red dwarf
element
36. A system of galaxies containing from several to thousands of member galaxies
red shift
ellipse
galaxy cluster
photon
37. Any substance that cannot be broken down into simpler substances
protostar
element
nebula
binary star
38. A spherical region of comets that surrounds the solar system
Oort Cloud
apogee
terrestrial planet
wavelength
39. The most distant point in the orbit of the moon
nebulae
Hubble's law
apogee
ellipse
40. The blocking of sunlight to the moon that occurs when Earth is directly between the sun and the moon
retrograde motion
pulsar
lunar eclipse
continuous spectrum
41. The brilliant explosion of a dying supergiant star
red giant
local group
pulsar
supernova
42. Influenced by Copernicus; Built observatory and collected data on the locations of stars and planets for over 20 years
Tycho Brahe
Hubble's law
Johannes Kepler
binary star
43. 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 giant
red shift
coma
pulsar
44. The farther away a galaxy is - the faster it is moving away
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45. When the northern or southern most point on earth receives the most sun because the earth is tilted toward the sun
absolute magnitude
planetesimal
solstace
earth's tilt
46. A faint star of enormous density
wavelength
white dwarf
aphelion
quasar
47. All of the frequencies or wavelengths of electromagnetic radiation
phases of the moon
electromagnetic spectrum
white dwarf
ellipse
48. The decrease in wavelength of light due to an object moving away from the oberver
terrestrial planet
blue shift
astronomy
cepheid variable
49. A very small star with low temperature - reddish in color
red dwarf
Sir Isaac Newton
main-sequence star
solstace
50. The comet discovered in 1705 that repeats itself every 76 years and last appeared in 1986.
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