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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. 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.
Hertzsprung-Russel Diagram
terrestrial planet
Galileo Galilei
nebula
2. The blocking of sunlight to the moon that occurs when Earth is directly between the sun and the moon
coma
Halley's Comet
lunar eclipse
local group
3. An elongated circle - or oval shape - the shape of the planets orbit
Galileo Galilei
ellipse
element
solar eclipse
4. Planet with a solid - rocky crust; more dense; Inner planet. Mercury - Venus - Earth - Mars
terrestrial planet
light-year
Oort Cloud
Sir Isaac Newton
5. Point in orbit that is closest to the sun - planet moves faster
moon
lunar eclipse
wavelength
perhelion
6. A very small star with low temperature - reddish in color
milky way galaxy
red dwarf
red giant
protostar
7. A spectrum of light in which there are no gaps - so that each region blends directly into the next
irregular galaxy
earth's tilt
continuous spectrum
moon
8. A telescope that uses a curved mirror to collect and focus light
irregular galaxy
reflecting telescope
red shift
elliptical galaxy
9. 23.5° - the reason we have seasons
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10. The small - dense remains of a high-mass star after a supernova
elliptical galaxy
Tycho Brahe
neutron star
perigee
11. The small - dense remains of a high-mass star after a supernova
neutron star
precession
chromatic abberation
Hubble's law
12. A model of the universe based on the assumption that the sun - moon - and planets all orbit Earth
binary star
binary star
geocentric
Johannes Kepler
13. Planets with low densities and are huge gas giants. Jupiter - Saturn - Uranus - Neptune
terrestrial planet
universal gravitation
Jovian planet
astronomy
14. Remnant of a star that is so dense that nothing - not even light - can escape its gravity field
cepheid variable
black hole
absorption spectrum
supergiant
15. Varying amounts of the lighted moon as seen from earth
protostar
phases of the moon
solstace
parallax
16. When the northern or southern most point on earth receives the most sun because the earth is tilted toward the sun
nebula
supergiant
solstace
binary star
17. Galaxy with no particular shape - contains new & old stars
galaxy
asteroid
electromagnetic spectrum
irregular galaxy
18. The brilliant explosion of a dying supergiant star
supernova
Hubble Space Telescope
white dwarf
Tycho Brahe
19. A variable star that brightens and dims regularly - or pulses - and whose distance can be determined from its period of pulsation
Nicolaus Copernicus
cepheid variable
perigee
red shift
20. Radiation left over from the beginning of the universe
background radiation
emission spectrum
meteorite
geocentric
21. Remnant of a star that is so dense that nothing - not even light - can escape its gravity field
lunar eclipse
aphelion
astronomy
black hole
22. A system of galaxies containing from several to thousands of member galaxies
equinox
red shift
red giant
galaxy cluster
23. The name of our galaxy - a spiral galaxy that contains about 400 billion stars
radio telescope
black hole
binary star
milky way galaxy
24. All of the frequencies or wavelengths of electromagnetic radiation
spiral galaxy
electromagnetic spectrum
pulsar
solstace
25. A galaxy with a bulge in the middle and arms that spiral outward in a pinwheel pattern
astronomical unit (AU)
asteroid
reflecting telescope
spiral galaxy
26. English mathematician and physicist - discovered the law of universal gravitation
binary star
perigee
Oort Cloud
Sir Isaac Newton
27. Spectrum of electromagnetic radiation emitted by a self-luminous source
emission spectrum
geocentric
meteorite
big bang theory
28. The theory that states that gravity will over come the expansion of the universe and bring everything together in an implosion
protostar
binary star
the big crunch
Galileo Galilei
29. Chunk of rock or dust in space
nova
meteroid
red giant
equinox
30. A star that ejects some of its material in the form of a cloud and become more luminous in the process
blue shift
Sir Isaac Newton
spiral galaxy
nova
31. A star that expands and cools once it runs out of hydrogen fuel
solstace
planetesimal
perhelion
red giant
32. 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.
Johannes Kepler
galaxy
Galileo Galilei
absorption spectrum
33. Massive clouds of dust and gases where stars are born
irregular galaxy
earth's tilt
electromagnetic spectrum
nebulae
34. The farther away a galaxy is - the faster it is moving away
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35. Chunk of rock or dust in space
continuous spectrum
meteroid
astronomical unit (AU)
supergiant
36. A particle of electromagnetic radiation having zero mass and carrying a quantum of energy
big bang theory
photon
red shift
white dwarf
37. Explained movement of planets with retrograde motion
continuous spectrum
planetesimal
Claudius Ptolemy
wavelength
38. 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 shift
geocentric
asteroid
Hertzsprung-Russel Diagram
39. The brilliant explosion of a dying supergiant star
nova
supernova
solstace
coma
40. The spectrum of electromagnetic radiation that has passed through a medium that absorbed radiation of certain wavelengths
Sir Isaac Newton
absorption spectrum
black hole
retrograde motion
41. The apparent change in position of an object when seen from different places
nebulae
Oort Cloud
parallax
terrestrial planet
42. A variable star that brightens and dims regularly - or pulses - and whose distance can be determined from its period of pulsation
main-sequence star
ellipse
quasar
cepheid variable
43. Polish astronomer who produced a workable model of the solar system with the sun in the center (1473-1543)
supergiant
element
moon
Nicolaus Copernicus
44. Galaxy with no particular shape - contains new & old stars
Johannes Kepler
background radiation
moon
irregular galaxy
45. The two days of the year on which neither hemisphere is tilted toward or away from the sun
equinox
retrograde motion
supernova
supernova
46. A rapidly spinning neutron star that produces radio waves
pulsar
earth's tilt
emission spectrum
blue shift
47. A model of the solar system in which Earth and the other planets revolve around the sun
parallax
protostar
heliocentric
Hubble's law
48. The brightness of a star when viewed from Earth
meteorite
moon
Sir Isaac Newton
apparent magnitude
49. Spectrum of electromagnetic radiation emitted by a self-luminous source
nebula
emission spectrum
evolution
elliptical galaxy
50. Brahe's assistant - German astronomer who first discovered the three laws of planetary motion (1571-1630)
Johannes Kepler
apparent magnitude
Nicolaus Copernicus
chromatic abberation