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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 particle of electromagnetic radiation having zero mass and carrying a quantum of energy
element
asteroid
wavelength
photon
2. The two days of the year on which neither hemisphere is tilted toward or away from the sun
Hubble's law
equinox
radio telescope
heliocentric
3. The formation of a celestial object by the effect of gravity pulling together surrounding objects and gases
planetesimal
retrograde motion
accretion
nebula
4. 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
neutron star
big bang theory
earth's tilt
red shift
5. The apparent change in position of an object when seen from different places
accretion
planetesimal
solar eclipse
parallax
6. A system of galaxies containing from several to thousands of member galaxies
rotation
Jovian planet
galaxy cluster
universal gravitation
7. An extremely bright star of very large diameter and low density
absolute magnitude
supergiant
Hubble's law
photon
8. The place in the orbit of a planet where the planet is farthest from the sun
aphelion
irregular galaxy
astronomy
evolution
9. A group of stars that form a pattern in the sky
Kuiper Belt
constellation
red shift
lunar eclipse
10. Optical telescope that has a large convex lens that produces an image that is viewed through the eyepiece
planet
local group
refracting telescope
Tycho Brahe
11. Varying amounts of the lighted moon as seen from earth
reflecting telescope
phases of the moon
wavelength
light-year
12. One of the small asteroid-like bodies that formed the building blocks of the planets
wavelength
planetesimal
electromagnetic spectrum
heliocentric
13. A star that falls into the main sequence category on the H-are diagram
main-sequence star
supergiant
protostar
terrestrial planet
14. 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
coma
Halley's Comet
heliocentric
15. The blocking of sunlight to the moon that occurs when Earth is directly between the sun and the moon
Hertzsprung-Russel Diagram
lunar eclipse
earth's tilt
photon
16. A star that ejects some of its material in the form of a cloud and become more luminous in the process
nebulae
asteroid
galaxy cluster
nova
17. When the northern or southern most point on earth receives the most sun because the earth is tilted toward the sun
blue shift
irregular galaxy
solstace
lunar eclipse
18. 23.5° - the reason we have seasons
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19. Any of the small solid extraterrestrial bodies that hits the earth's atmosphere
background radiation
meteor
astronomical unit (AU)
Nicolaus Copernicus
20. A rapidly spinning neutron star that produces radio waves
Hubble Space Telescope
pulsar
supergiant
comet
21. A variable star that brightens and dims regularly - or pulses - and whose distance can be determined from its period of pulsation
Sir Isaac Newton
elliptical galaxy
cepheid variable
perigee
22. Stony or metallic object that is the remains of a meteoroid that has reached the earth's surface
continuous spectrum
spiral galaxy
meteorite
elliptical galaxy
23. An immense cloud of gas (mainly hydrogen) and dust in interstellar space
nebula
parallax
planetesimal
red shift
24. Light distance travels in one year (9.5 trillion km)
apogee
pulsar
comet
light-year
25. Chunk of rock or dust in space
meteroid
astronomy
apogee
element
26. A faint star of enormous density
chromatic abberation
white dwarf
reflecting telescope
quasar
27. Remnant of a star that is so dense that nothing - not even light - can escape its gravity field
black hole
element
radio telescope
Hubble's law
28. One of the small asteroid-like bodies that formed the building blocks of the planets
planetesimal
quasar
galaxy
protostar
29. A system of galaxies containing from several to thousands of member galaxies
heliocentric
galaxy cluster
solar eclipse
planetesimal
30. Galaxy with no particular shape - contains new & old stars
irregular galaxy
ellipse
red giant
Galileo Galilei
31. An enormously bright - distant galaxy with a giant black hole at its center
quasar
perigee
meteroid
the big crunch
32. Massive clouds of dust and gases where stars are born
Oort Cloud
nebulae
chromatic abberation
neutron star
33. Optical telescope that has a large convex lens that produces an image that is viewed through the eyepiece
nova
constellation
cepheid variable
refracting telescope
34. The blocking of sunlight to the moon that occurs when Earth is directly between the sun and the moon
solar eclipse
spectroscopy
lunar eclipse
the big crunch
35. The motion of a spinning body (as a top) in which it wobbles so that the axis of rotation sweeps out a cone
Galileo Galilei
evolution
precession
wavelength
36. Planets with low densities and are huge gas giants. Jupiter - Saturn - Uranus - Neptune
continuous spectrum
retrograde motion
phases of the moon
Jovian planet
37. Radiation left over from the beginning of the universe
accretion
background radiation
planetesimal
Hubble's law
38. Large group of stars - dust - and gas held together by gravity; can be elliptical - spiral - or irregular
Sir Isaac Newton
galaxy
wavelength
spectroscopy
39. The brilliant explosion of a dying supergiant star
precession
supernova
continuous spectrum
spectroscopy
40. 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
emission spectrum
universal gravitation
asteroid
apogee
41. A graph relating the temperature and brightness of stars
galaxy cluster
Hertzsprung-Russel Diagram
red giant
white dwarf
42. A model of the universe based on the assumption that the sun - moon - and planets all orbit Earth
continuous spectrum
irregular galaxy
geocentric
neutron star
43. Astronomical telescope that picks up electromagnetic radiations in the radio-frequency range from extra-terrestrial sources
perigee
Nicolaus Copernicus
radio telescope
Sir Isaac Newton
44. A measure of the amount of light that a star actually emits
absolute magnitude
rotation
perigee
earth's tilt
45. Any natural satellite of a planet
doppler effect
moon
Halley's Comet
Claudius Ptolemy
46. All of the frequencies or wavelengths of electromagnetic radiation
meteroid
apparent magnitude
refracting telescope
electromagnetic spectrum
47. A very small star with low temperature - reddish in color
galaxy cluster
red dwarf
galaxy cluster
Hubble Space Telescope
48. The small - dense remains of a high-mass star after a supernova
the big crunch
neutron star
reflecting telescope
spiral galaxy
49. Any substance that cannot be broken down into simpler substances
universal gravitation
Sir Isaac Newton
element
wavelength
50. Astronomical telescope that picks up electromagnetic radiations in the radio-frequency range from extra-terrestrial sources
radio telescope
reflecting telescope
galaxy
big bang theory