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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 faint star of enormous density
white dwarf
absorption spectrum
cepheid variable
Claudius Ptolemy
2. A model of the solar system in which Earth and the other planets revolve around the sun
heliocentric
Jovian planet
precession
photon
3. The spectrum of electromagnetic radiation that has passed through a medium that absorbed radiation of certain wavelengths
absorption spectrum
reflecting telescope
nebula
elliptical galaxy
4. Brahe's assistant - German astronomer who first discovered the three laws of planetary motion (1571-1630)
retrograde motion
Johannes Kepler
big bang theory
Claudius Ptolemy
5. The farther away a galaxy is - the faster it is moving away
6. Optical telescope that has a large convex lens that produces an image that is viewed through the eyepiece
earth's tilt
electromagnetic spectrum
refracting telescope
main-sequence star
7. When the moon passes between earth and the sun - blocking the sunlight from reaching earth
solar eclipse
retrograde motion
protostar
doppler effect
8. Influenced by Copernicus; Built observatory and collected data on the locations of stars and planets for over 20 years
supernova
meteor
Tycho Brahe
moon
9. Planet with a solid - rocky crust; more dense; Inner planet. Mercury - Venus - Earth - Mars
Oort Cloud
Nicolaus Copernicus
supergiant
terrestrial planet
10. The theory that states that gravity will over come the expansion of the universe and bring everything together in an implosion
Hertzsprung-Russel Diagram
doppler effect
the big crunch
astronomy
11. A faint star of enormous density
accretion
wavelength
white dwarf
absorption spectrum
12. When the moon passes between earth and the sun - blocking the sunlight from reaching earth
solar eclipse
coma
white dwarf
white dwarf
13. A system of two stars that revolve around each other under their mutual gravitation
nova
binary star
meteorite
Tycho Brahe
14. Astronomical telescope that picks up electromagnetic radiations in the radio-frequency range from extra-terrestrial sources
moon
coma
continuous spectrum
radio telescope
15. A model of the universe based on the assumption that the sun - moon - and planets all orbit Earth
meteorite
photon
retrograde motion
geocentric
16. Any of the small solid extraterrestrial bodies that hits the earth's atmosphere
asteroid
white dwarf
meteor
lunar eclipse
17. The most distant point in the orbit of the moon
apogee
red dwarf
equinox
main-sequence star
18. Light distance travels in one year (9.5 trillion km)
retrograde motion
accretion
light-year
constellation
19. Explained movement of planets with retrograde motion
nebula
Claudius Ptolemy
spectroscopy
solstace
20. The distance between crests of waves - such as those of the electromagnetic spectrum
Johannes Kepler
wavelength
doppler effect
Johannes Kepler
21. Any of numerous small celestial bodies composed of rock and metal that move around the sun (mainly between the orbits of Mars and Jupiter)
quasar
asteroid
light-year
rotation
22. A model of the solar system in which Earth and the other planets revolve around the sun
heliocentric
Nicolaus Copernicus
Hubble Space Telescope
planetesimal
23. A spectrum of light in which there are no gaps - so that each region blends directly into the next
aphelion
constellation
meteor
continuous spectrum
24. The farther away a galaxy is - the faster it is moving away
25. The two days of the year on which neither hemisphere is tilted toward or away from the sun
astronomical unit (AU)
quasar
elliptical galaxy
equinox
26. A spherical region of comets that surrounds the solar system
the big crunch
Oort Cloud
elliptical galaxy
meteroid
27. The distance between crests of waves - such as those of the electromagnetic spectrum
apogee
wavelength
planet
solstace
28. The spinning of Earth on its axis
rotation
constellation
Johannes Kepler
precession
29. The brilliant explosion of a dying supergiant star
Oort Cloud
element
universal gravitation
supernova
30. A contracting cloud of gas and dust with enough mass to form a star
solstace
universal gravitation
Oort Cloud
protostar
31. A group of about 30 galaxies that includes the Milky Way
local group
emission spectrum
earth's tilt
meteroid
32. Stony or metallic object that is the remains of a meteoroid that has reached the earth's surface
quasar
meteorite
Nicolaus Copernicus
galaxy cluster
33. The brightness of a star when viewed from Earth
apparent magnitude
astronomy
continuous spectrum
meteorite
34. The name of our galaxy - a spiral galaxy that contains about 400 billion stars
refracting telescope
milky way galaxy
perigee
planetesimal
35. A telescope that uses a curved mirror to collect and focus light
reflecting telescope
absolute magnitude
Claudius Ptolemy
big bang theory
36. Any substance that cannot be broken down into simpler substances
supernova
element
big bang theory
white dwarf
37. One of the small asteroid-like bodies that formed the building blocks of the planets
evolution
planetesimal
nebulae
Nicolaus Copernicus
38. Spectrum of electromagnetic radiation emitted by a self-luminous source
emission spectrum
perhelion
galaxy cluster
spiral galaxy
39. The spinning of Earth on its axis
red dwarf
rotation
white dwarf
Claudius Ptolemy
40. The place in the orbit of a planet where the planet is farthest from the sun
Sir Isaac Newton
constellation
evolution
aphelion
41. A galaxy shaped like a flattened ball - containing only old stars
elliptical galaxy
meteor
galaxy
emission spectrum
42. A particle of electromagnetic radiation having zero mass and carrying a quantum of energy
Kuiper Belt
photon
black hole
astronomy
43. Point of moon's orbit when it is nearest the earth
white dwarf
moon
evolution
perigee
44. A faint star of enormous density
absorption spectrum
earth's tilt
nebulae
white dwarf
45. When the northern or southern most point on earth receives the most sun because the earth is tilted toward the sun
retrograde motion
chromatic abberation
Oort Cloud
solstace
46. A rapidly spinning neutron star that produces radio waves
red giant
pulsar
the big crunch
universal gravitation
47. An extremely bright star of very large diameter and low density
supergiant
meteroid
solar eclipse
galaxy
48. Brahe's assistant - German astronomer who first discovered the three laws of planetary motion (1571-1630)
phases of the moon
nebulae
solstace
Johannes Kepler
49. An enormously bright - distant galaxy with a giant black hole at its center
quasar
geocentric
equinox
doppler effect
50. English mathematician and physicist - discovered the law of universal gravitation
constellation
Tycho Brahe
Sir Isaac Newton
universal gravitation