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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. Remnant of a star that is so dense that nothing - not even light - can escape its gravity field
Jovian planet
apogee
Sir Isaac Newton
black hole
2. The luminous cloud of particles surrounding the frozen nucleus of a comet
galaxy
coma
accretion
parallax
3. A system of galaxies containing from several to thousands of member galaxies
Johannes Kepler
galaxy cluster
Johannes Kepler
meteor
4. The blocking of sunlight to the moon that occurs when Earth is directly between the sun and the moon
milky way galaxy
parallax
continuous spectrum
lunar eclipse
5. The distance between crests of waves - such as those of the electromagnetic spectrum
chromatic abberation
main-sequence star
wavelength
cepheid variable
6. A measure of the amount of light that a star actually emits
planet
absolute magnitude
refracting telescope
radio telescope
7. The most distant point in the orbit of the moon
apogee
solar eclipse
the big crunch
solstace
8. The increase in wavelength of light due to an object moving away from the observer
doppler effect
Oort Cloud
red shift
precession
9. The study of the universe
astronomy
Halley's Comet
red dwarf
local group
10. Polish astronomer who produced a workable model of the solar system with the sun in the center (1473-1543)
Galileo Galilei
white dwarf
Sir Isaac Newton
Nicolaus Copernicus
11. A very small star with low temperature - reddish in color
earth's tilt
meteroid
red dwarf
astronomical unit (AU)
12. Spectrum of electromagnetic radiation emitted by a self-luminous source
Johannes Kepler
nova
electromagnetic spectrum
emission spectrum
13. The apparent change in position of an object when seen from different places
Jovian planet
Galileo Galilei
parallax
rotation
14. The name of our galaxy - a spiral galaxy that contains about 400 billion stars
meteroid
spectroscopy
local group
milky way galaxy
15. 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
Jovian planet
white dwarf
comet
Galileo Galilei
16. The apparent change in position of an object when seen from different places
heliocentric
parallax
nebula
astronomical unit (AU)
17. A telescope that uses a curved mirror to collect and focus light
apogee
reflecting telescope
solar eclipse
asteroid
18. Large group of stars - dust - and gas held together by gravity; can be elliptical - spiral - or irregular
universal gravitation
Halley's Comet
galaxy
Oort Cloud
19. Any of the small solid extraterrestrial bodies that hits the earth's atmosphere
universal gravitation
main-sequence star
protostar
meteor
20. Planets with low densities and are huge gas giants. Jupiter - Saturn - Uranus - Neptune
continuous spectrum
perigee
Jovian planet
Nicolaus Copernicus
21. A contracting cloud of gas and dust with enough mass to form a star
red dwarf
protostar
Tycho Brahe
parallax
22. Explained movement of planets with retrograde motion
Sir Isaac Newton
irregular galaxy
Claudius Ptolemy
precession
23. The study of the universe
white dwarf
astronomical unit (AU)
apogee
astronomy
24. The elliptical motion of a body as it orbits another body in space
comet
evolution
solstace
Johannes Kepler
25. The theory that the universe originated 20 billion years ago from the cataclysmic explosion of a small mass of matter at extremely high density and temperature
reflecting telescope
absolute magnitude
earth's tilt
big bang theory
26. The blocking of sunlight to the moon that occurs when Earth is directly between the sun and the moon
comet
meteorite
lunar eclipse
Nicolaus Copernicus
27. Any substance that cannot be broken down into simpler substances
nebula
universal gravitation
element
protostar
28. A rapidly spinning neutron star that produces radio waves
Tycho Brahe
Hubble Space Telescope
pulsar
element
29. A large cloud of dust and gas that can break apart into smaller pieces and form stars
red giant
nebula
supernova
continuous spectrum
30. When the moon passes between earth and the sun - blocking the sunlight from reaching earth
solar eclipse
meteroid
big bang theory
local group
31. Stony or metallic object that is the remains of a meteoroid that has reached the earth's surface
white dwarf
Jovian planet
meteorite
lunar eclipse
32. The elliptical motion of a body as it orbits another body in space
spectroscopy
lunar eclipse
Galileo Galilei
evolution
33. Massive clouds of dust and gases where stars are born
nebulae
white dwarf
light-year
astronomical unit (AU)
34. A group of stars that form a pattern in the sky
aphelion
background radiation
elliptical galaxy
constellation
35. The place in the orbit of a planet where the planet is farthest from the sun
aphelion
Hubble's law
continuous spectrum
the big crunch
36. Optical telescope that has a large convex lens that produces an image that is viewed through the eyepiece
geocentric
emission spectrum
refracting telescope
Sir Isaac Newton
37. An enormously bright - distant galaxy with a giant black hole at its center
quasar
accretion
comet
rotation
38. One of the small asteroid-like bodies that formed the building blocks of the planets
planetesimal
supergiant
supernova
perigee
39. A measure of the amount of light that a star actually emits
protostar
absolute magnitude
Oort Cloud
phases of the moon
40. Change in the apparent frequency of a wave as observer and source move toward or away from each other
electromagnetic spectrum
chromatic abberation
ellipse
doppler effect
41. Varying amounts of the lighted moon as seen from earth
Galileo Galilei
asteroid
local group
phases of the moon
42. Change in the apparent frequency of a wave as observer and source move toward or away from each other
doppler effect
pulsar
astronomical unit (AU)
perhelion
43. Varying amounts of the lighted moon as seen from earth
continuous spectrum
nova
ellipse
phases of the moon
44. 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
meteor
red shift
background radiation
Hubble's law
45. A star that expands and cools once it runs out of hydrogen fuel
spiral galaxy
electromagnetic spectrum
apogee
red giant
46. A model of the universe based on the assumption that the sun - moon - and planets all orbit Earth
Johannes Kepler
geocentric
Jovian planet
perhelion
47. The decrease in wavelength of light due to an object moving away from the oberver
retrograde motion
blue shift
earth's tilt
nova
48. Optical telescope that has a large convex lens that produces an image that is viewed through the eyepiece
white dwarf
absorption spectrum
universal gravitation
refracting telescope
49. The brightness of a star when viewed from Earth
continuous spectrum
apparent magnitude
ellipse
Jovian planet
50. 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
planet
meteorite
refracting telescope
comet