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Test your basic knowledge |
Astronomy Basics
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Subject
:
science
Instructions:
Answer 50 questions in 15 minutes.
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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 of the small solid extraterrestrial bodies that hits the earth's atmosphere
meteor
geocentric
pulsar
reflecting telescope
2. The luminous cloud of particles surrounding the frozen nucleus of a comet
big bang theory
Hubble Space Telescope
Tycho Brahe
coma
3. Spectrum of electromagnetic radiation emitted by a self-luminous source
refracting telescope
local group
emission spectrum
accretion
4. The apparent change in position of an object when seen from different places
photon
parallax
nova
accretion
5. Optical telescope that has a large convex lens that produces an image that is viewed through the eyepiece
protostar
refracting telescope
absorption spectrum
planet
6. A large cloud of dust and gas that can break apart into smaller pieces and form stars
elliptical galaxy
equinox
background radiation
nebula
7. The formation of a celestial object by the effect of gravity pulling together surrounding objects and gases
emission spectrum
accretion
Galileo Galilei
local group
8. One of the small asteroid-like bodies that formed the building blocks of the planets
accretion
doppler effect
Johannes Kepler
planetesimal
9. A star that expands and cools once it runs out of hydrogen fuel
red giant
rotation
photon
Hubble's law
10. All of the frequencies or wavelengths of electromagnetic radiation
apparent magnitude
heliocentric
electromagnetic spectrum
precession
11. Light distance travels in one year (9.5 trillion km)
Claudius Ptolemy
light-year
elliptical galaxy
white dwarf
12. Planet with a solid - rocky crust; more dense; Inner planet. Mercury - Venus - Earth - Mars
lunar eclipse
aphelion
terrestrial planet
asteroid
13. Any of numerous small celestial bodies composed of rock and metal that move around the sun (mainly between the orbits of Mars and Jupiter)
elliptical galaxy
asteroid
nova
element
14. Any natural satellite of a planet
Halley's Comet
planetesimal
absolute magnitude
moon
15. A model of the solar system in which Earth and the other planets revolve around the sun
constellation
emission spectrum
planetesimal
heliocentric
16. A graph relating the temperature and brightness of stars
parallax
element
Hertzsprung-Russel Diagram
radio telescope
17. Optical telescope that has a large convex lens that produces an image that is viewed through the eyepiece
solar eclipse
perhelion
parallax
refracting telescope
18. Massive clouds of dust and gases where stars are born
nebulae
photon
terrestrial planet
phases of the moon
19. The average distance between the Earth and the sun - or approximately 150000000 km
astronomical unit (AU)
coma
geocentric
Claudius Ptolemy
20. An extremely bright star of very large diameter and low density
equinox
terrestrial planet
astronomical unit (AU)
supergiant
21. The spinning of Earth on its axis
radio telescope
rotation
milky way galaxy
Hertzsprung-Russel Diagram
22. The brightness of a star when viewed from Earth
coma
precession
absorption spectrum
apparent magnitude
23. A measure of the amount of light that a star actually emits
supergiant
nova
Tycho Brahe
absolute magnitude
24. The elliptical motion of a body as it orbits another body in space
evolution
pulsar
white dwarf
continuous spectrum
25. The name of our galaxy - a spiral galaxy that contains about 400 billion stars
milky way galaxy
planet
Sir Isaac Newton
main-sequence star
26. Brahe's assistant - German astronomer who first discovered the three laws of planetary motion (1571-1630)
refracting telescope
Johannes Kepler
background radiation
nebula
27. All of the frequencies or wavelengths of electromagnetic radiation
absolute magnitude
universal gravitation
electromagnetic spectrum
continuous spectrum
28. Radiation left over from the beginning of the universe
background radiation
refracting telescope
planetesimal
spectroscopy
29. 23.5° - the reason we have seasons
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30. The increase in wavelength of light due to an object moving away from the observer
blue shift
red shift
Hubble Space Telescope
irregular galaxy
31. The brilliant explosion of a dying supergiant star
black hole
wavelength
Hubble's law
supernova
32. Planets with low densities and are huge gas giants. Jupiter - Saturn - Uranus - Neptune
reflecting telescope
geocentric
continuous spectrum
Jovian planet
33. A model of the universe based on the assumption that the sun - moon - and planets all orbit Earth
nebula
milky way galaxy
geocentric
the big crunch
34. An extremely bright star of very large diameter and low density
astronomical unit (AU)
Oort Cloud
supergiant
red giant
35. The study of the universe
astronomy
aphelion
nebula
Sir Isaac Newton
36. Point of moon's orbit when it is nearest the earth
emission spectrum
perigee
ellipse
asteroid
37. When the northern or southern most point on earth receives the most sun because the earth is tilted toward the sun
terrestrial planet
elliptical galaxy
Oort Cloud
solstace
38. 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
comet
coma
chromatic abberation
electromagnetic spectrum
39. The place in the orbit of a planet where the planet is farthest from the sun
perhelion
Sir Isaac Newton
big bang theory
aphelion
40. The farther away a galaxy is - the faster it is moving away
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41. The luminous cloud of particles surrounding the frozen nucleus of a comet
spiral galaxy
red shift
coma
white dwarf
42. The study of the spectra of stars by analyzing the spectral properties of the light they give off
protostar
perhelion
light-year
spectroscopy
43. 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.
cepheid variable
Galileo Galilei
supergiant
black hole
44. A spectrum of light in which there are no gaps - so that each region blends directly into the next
continuous spectrum
photon
black hole
retrograde motion
45. A star that falls into the main sequence category on the H-are diagram
moon
main-sequence star
galaxy
Sir Isaac Newton
46. The small - dense remains of a high-mass star after a supernova
neutron star
Galileo Galilei
aphelion
continuous spectrum
47. A faint star of enormous density
wavelength
white dwarf
planet
asteroid
48. Planets with low densities and are huge gas giants. Jupiter - Saturn - Uranus - Neptune
Sir Isaac Newton
Jovian planet
asteroid
red shift
49. Varying amounts of the lighted moon as seen from earth
Hubble Space Telescope
Tycho Brahe
phases of the moon
coma
50. A region of the solar system that is just beyond the orbit of neptune and that contains small bodies made mostly of ice
nova
earth's tilt
Kuiper Belt
main-sequence star
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