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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. Any substance that cannot be broken down into simpler substances
white dwarf
red dwarf
emission spectrum
element
2. 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
Hubble's law
universal gravitation
Kuiper Belt
meteorite
3. The place in the orbit of a planet where the planet is farthest from the sun
black hole
earth's tilt
Claudius Ptolemy
aphelion
4. The luminous cloud of particles surrounding the frozen nucleus of a comet
supergiant
galaxy cluster
Tycho Brahe
coma
5. The study of the spectra of stars by analyzing the spectral properties of the light they give off
spectroscopy
terrestrial planet
Hertzsprung-Russel Diagram
apogee
6. A system of two stars that revolve around each other under their mutual gravitation
binary star
light-year
pulsar
red giant
7. A star that ejects some of its material in the form of a cloud and become more luminous in the process
binary star
moon
apparent magnitude
nova
8. The comet discovered in 1705 that repeats itself every 76 years and last appeared in 1986.
9. 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
big bang theory
red giant
red shift
perigee
10. Optical telescope that has a large convex lens that produces an image that is viewed through the eyepiece
refracting telescope
geocentric
Claudius Ptolemy
element
11. Point of moon's orbit when it is nearest the earth
ellipse
aphelion
perigee
white dwarf
12. Brahe's assistant - German astronomer who first discovered the three laws of planetary motion (1571-1630)
astronomy
asteroid
universal gravitation
Johannes Kepler
13. A model of the universe based on the assumption that the sun - moon - and planets all orbit Earth
Jovian planet
spectroscopy
geocentric
apogee
14. The formation of a celestial object by the effect of gravity pulling together surrounding objects and gases
Halley's Comet
background radiation
big bang theory
accretion
15. The two days of the year on which neither hemisphere is tilted toward or away from the sun
equinox
red shift
Oort Cloud
doppler effect
16. A model of the solar system in which Earth and the other planets revolve around the sun
supernova
astronomy
heliocentric
geocentric
17. A rapidly spinning neutron star that produces radio waves
universal gravitation
precession
pulsar
Hubble Space Telescope
18. A particle of electromagnetic radiation having zero mass and carrying a quantum of energy
solar eclipse
photon
phases of the moon
radio telescope
19. A spherical region of comets that surrounds the solar system
Johannes Kepler
accretion
absorption spectrum
Oort Cloud
20. An extremely bright star of very large diameter and low density
solstace
planet
blue shift
supergiant
21. The decrease in wavelength of light due to an object moving away from the oberver
quasar
blue shift
electromagnetic spectrum
nebulae
22. Point in orbit that is closest to the sun - planet moves faster
perhelion
geocentric
Nicolaus Copernicus
Kuiper Belt
23. Radiation left over from the beginning of the universe
Johannes Kepler
earth's tilt
Halley's Comet
background radiation
24. The distance between crests of waves - such as those of the electromagnetic spectrum
apparent magnitude
Jovian planet
wavelength
background radiation
25. Massive clouds of dust and gases where stars are born
blue shift
phases of the moon
perhelion
nebulae
26. The spinning of Earth on its axis
planetesimal
irregular galaxy
rotation
galaxy cluster
27. Large group of stars - dust - and gas held together by gravity; can be elliptical - spiral - or irregular
red giant
Hertzsprung-Russel Diagram
galaxy
meteorite
28. Astronomical telescope that picks up electromagnetic radiations in the radio-frequency range from extra-terrestrial sources
radio telescope
meteor
big bang theory
Halley's Comet
29. The farther away a galaxy is - the faster it is moving away
30. Any of numerous small celestial bodies composed of rock and metal that move around the sun (mainly between the orbits of Mars and Jupiter)
perhelion
nebulae
geocentric
asteroid
31. One of the small asteroid-like bodies that formed the building blocks of the planets
planetesimal
absorption spectrum
galaxy
solstace
32. Remnant of a star that is so dense that nothing - not even light - can escape its gravity field
Nicolaus Copernicus
black hole
red shift
radio telescope
33. When the moon passes between earth and the sun - blocking the sunlight from reaching earth
continuous spectrum
solar eclipse
terrestrial planet
Nicolaus Copernicus
34. The apparent change in position of an object when seen from different places
the big crunch
parallax
chromatic abberation
precession
35. The spinning of Earth on its axis
rotation
milky way galaxy
spectroscopy
big bang theory
36. Change in the apparent frequency of a wave as observer and source move toward or away from each other
solstace
comet
doppler effect
Galileo Galilei
37. 23.5° - the reason we have seasons
38. When the northern or southern most point on earth receives the most sun because the earth is tilted toward the sun
photon
ellipse
solstace
lunar eclipse
39. The comet discovered in 1705 that repeats itself every 76 years and last appeared in 1986.
40. The elliptical motion of a body as it orbits another body in space
evolution
coma
wavelength
refracting telescope
41. The increase in wavelength of light due to an object moving away from the observer
red shift
white dwarf
astronomical unit (AU)
Nicolaus Copernicus
42. A spectrum of light in which there are no gaps - so that each region blends directly into the next
electromagnetic spectrum
nebulae
Hubble's law
continuous spectrum
43. A rapidly spinning neutron star that produces radio waves
cepheid variable
pulsar
rotation
meteroid
44. 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
Hertzsprung-Russel Diagram
white dwarf
comet
asteroid
45. A large body in space that orbits a star and does not produce light of its own
element
planet
pulsar
Hubble's law
46. The brightness of a star when viewed from Earth
apparent magnitude
wavelength
red giant
constellation
47. A variable star that brightens and dims regularly - or pulses - and whose distance can be determined from its period of pulsation
electromagnetic spectrum
planet
cepheid variable
meteroid
48. The increase in wavelength of light due to an object moving away from the observer
terrestrial planet
blue shift
red shift
pulsar
49. Optical telescope that has a large convex lens that produces an image that is viewed through the eyepiece
nebulae
blue shift
refracting telescope
absolute magnitude
50. One of the small asteroid-like bodies that formed the building blocks of the planets
Galileo Galilei
asteroid
planetesimal
doppler effect