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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. Brahe's assistant - German astronomer who first discovered the three laws of planetary motion (1571-1630)
Johannes Kepler
apparent magnitude
precession
chromatic abberation
2. When the northern or southern most point on earth receives the most sun because the earth is tilted toward the sun
galaxy cluster
geocentric
solstace
Nicolaus Copernicus
3. Large group of stars - dust - and gas held together by gravity; can be elliptical - spiral - or irregular
galaxy
red dwarf
Hubble's law
cepheid variable
4. Point of moon's orbit when it is nearest the earth
elliptical galaxy
perigee
milky way galaxy
radio telescope
5. A spherical region of comets that surrounds the solar system
red giant
galaxy cluster
Halley's Comet
Oort Cloud
6. The study of the spectra of stars by analyzing the spectral properties of the light they give off
asteroid
apparent magnitude
spectroscopy
constellation
7. The increase in wavelength of light due to an object moving away from the observer
red shift
supernova
black hole
apparent magnitude
8. A graph relating the temperature and brightness of stars
comet
background radiation
coma
Hertzsprung-Russel Diagram
9. Any of numerous small celestial bodies composed of rock and metal that move around the sun (mainly between the orbits of Mars and Jupiter)
neutron star
asteroid
nebulae
lunar eclipse
10. A telescope that uses a curved mirror to collect and focus light
perhelion
equinox
emission spectrum
reflecting telescope
11. One of the small asteroid-like bodies that formed the building blocks of the planets
background radiation
doppler effect
nebulae
planetesimal
12. Spectrum of electromagnetic radiation emitted by a self-luminous source
emission spectrum
background radiation
background radiation
galaxy
13. Large group of stars - dust - and gas held together by gravity; can be elliptical - spiral - or irregular
astronomical unit (AU)
galaxy
apogee
supergiant
14. All of the frequencies or wavelengths of electromagnetic radiation
electromagnetic spectrum
Hubble's law
phases of the moon
radio telescope
15. The comet discovered in 1705 that repeats itself every 76 years and last appeared in 1986.
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16. Point in orbit that is closest to the sun - planet moves faster
accretion
Sir Isaac Newton
perhelion
Hubble's law
17. The luminous cloud of particles surrounding the frozen nucleus of a comet
chromatic abberation
absolute magnitude
moon
coma
18. Influenced by Copernicus; Built observatory and collected data on the locations of stars and planets for over 20 years
apogee
Tycho Brahe
lunar eclipse
asteroid
19. The average distance between the Earth and the sun - or approximately 150000000 km
galaxy cluster
neutron star
astronomical unit (AU)
precession
20. A star that ejects some of its material in the form of a cloud and become more luminous in the process
continuous spectrum
nova
Tycho Brahe
white dwarf
21. A system of two stars that revolve around each other under their mutual gravitation
binary star
element
moon
earth's tilt
22. A group of stars that form a pattern in the sky
galaxy
constellation
refracting telescope
solstace
23. A spectrum of light in which there are no gaps - so that each region blends directly into the next
precession
element
electromagnetic spectrum
continuous spectrum
24. The spectrum of electromagnetic radiation that has passed through a medium that absorbed radiation of certain wavelengths
ellipse
absorption spectrum
absolute magnitude
constellation
25. A star that expands and cools once it runs out of hydrogen fuel
moon
red giant
red shift
wavelength
26. The rainbow effect when light is dispersed through lens
Oort Cloud
absorption spectrum
chromatic abberation
neutron star
27. A large body in space that orbits a star and does not produce light of its own
Oort Cloud
constellation
milky way galaxy
planet
28. A very small star with low temperature - reddish in color
black hole
Hubble Space Telescope
cepheid variable
red dwarf
29. A galaxy shaped like a flattened ball - containing only old stars
elliptical galaxy
absorption spectrum
coma
wavelength
30. The motion of a spinning body (as a top) in which it wobbles so that the axis of rotation sweeps out a cone
elliptical galaxy
red shift
supernova
precession
31. Massive clouds of dust and gases where stars are born
red giant
planet
Galileo Galilei
nebulae
32. 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
element
moon
rotation
universal gravitation
33. The average distance between the Earth and the sun - or approximately 150000000 km
equinox
nebula
astronomical unit (AU)
phases of the moon
34. An extremely bright star of very large diameter and low density
chromatic abberation
apogee
supernova
supergiant
35. A star that falls into the main sequence category on the H-are diagram
main-sequence star
Hertzsprung-Russel Diagram
white dwarf
reflecting telescope
36. The apparent change in position of an object when seen from different places
parallax
protostar
element
universal gravitation
37. The small - dense remains of a high-mass star after a supernova
heliocentric
white dwarf
element
neutron star
38. The increase in wavelength of light due to an object moving away from the observer
supergiant
red shift
Nicolaus Copernicus
parallax
39. Spectrum of electromagnetic radiation emitted by a self-luminous source
meteorite
emission spectrum
Hubble Space Telescope
heliocentric
40. An immense cloud of gas (mainly hydrogen) and dust in interstellar space
nebula
astronomy
absolute magnitude
earth's tilt
41. The distance between crests of waves - such as those of the electromagnetic spectrum
element
Tycho Brahe
earth's tilt
wavelength
42. The place in the orbit of a planet where the planet is farthest from the sun
local group
heliocentric
perhelion
aphelion
43. Optical telescope that has a large convex lens that produces an image that is viewed through the eyepiece
refracting telescope
rotation
emission spectrum
heliocentric
44. Influenced by Copernicus; Built observatory and collected data on the locations of stars and planets for over 20 years
background radiation
cepheid variable
Tycho Brahe
local group
45. Any of the small solid extraterrestrial bodies that hits the earth's atmosphere
meteor
red dwarf
refracting telescope
main-sequence star
46. Change in the apparent frequency of a wave as observer and source move toward or away from each other
doppler effect
meteor
equinox
photon
47. An elongated circle - or oval shape - the shape of the planets orbit
red giant
ellipse
galaxy cluster
astronomical unit (AU)
48. An extremely bright star of very large diameter and low density
light-year
galaxy cluster
supergiant
rotation
49. The luminous cloud of particles surrounding the frozen nucleus of a comet
continuous spectrum
asteroid
background radiation
coma
50. The name of our galaxy - a spiral galaxy that contains about 400 billion stars
binary star
milky way galaxy
absolute magnitude
rotation