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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. Influenced by Copernicus; Built observatory and collected data on the locations of stars and planets for over 20 years
elliptical galaxy
wavelength
spectroscopy
Tycho Brahe
2. English mathematician and physicist - discovered the law of universal gravitation
evolution
cepheid variable
Sir Isaac Newton
Galileo Galilei
3. Optical telescope that has a large convex lens that produces an image that is viewed through the eyepiece
refracting telescope
big bang theory
Hubble Space Telescope
evolution
4. Planet with a solid - rocky crust; more dense; Inner planet. Mercury - Venus - Earth - Mars
terrestrial planet
pulsar
neutron star
comet
5. The brightness of a star when viewed from Earth
pulsar
neutron star
evolution
apparent magnitude
6. All of the frequencies or wavelengths of electromagnetic radiation
spiral galaxy
the big crunch
electromagnetic spectrum
planetesimal
7. A large body in space that orbits a star and does not produce light of its own
main-sequence star
planet
Jovian planet
Oort Cloud
8. 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
pulsar
galaxy cluster
comet
milky way galaxy
9. A large body in space that orbits a star and does not produce light of its own
irregular galaxy
evolution
Claudius Ptolemy
planet
10. A spherical region of comets that surrounds the solar system
Oort Cloud
wavelength
planetesimal
Jovian planet
11. Remnant of a star that is so dense that nothing - not even light - can escape its gravity field
black hole
pulsar
aphelion
light-year
12. Brahe's assistant - German astronomer who first discovered the three laws of planetary motion (1571-1630)
perigee
red giant
Johannes Kepler
red dwarf
13. A graph relating the temperature and brightness of stars
Claudius Ptolemy
supergiant
Hertzsprung-Russel Diagram
Jovian planet
14. An immense cloud of gas (mainly hydrogen) and dust in interstellar space
pulsar
nebula
galaxy
retrograde motion
15. An elongated circle - or oval shape - the shape of the planets orbit
ellipse
parallax
milky way galaxy
nova
16. A large cloud of dust and gas that can break apart into smaller pieces and form stars
nebula
apogee
continuous spectrum
ellipse
17. The study of the spectra of stars by analyzing the spectral properties of the light they give off
meteor
ellipse
spectroscopy
red shift
18. A star that ejects some of its material in the form of a cloud and become more luminous in the process
red giant
Hubble's law
big bang theory
nova
19. The place in the orbit of a planet where the planet is farthest from the sun
absorption spectrum
coma
aphelion
apparent magnitude
20. A star that expands and cools once it runs out of hydrogen fuel
planet
heliocentric
red giant
parallax
21. A group of stars that form a pattern in the sky
Hubble's law
constellation
nebulae
asteroid
22. Remnant of a star that is so dense that nothing - not even light - can escape its gravity field
red shift
planetesimal
black hole
radio telescope
23. A space telescope and camera named for a famous astronaut (Edward Hubble) used to study space elements
accretion
protostar
coma
Hubble Space Telescope
24. The spinning of Earth on its axis
rotation
absorption spectrum
solar eclipse
Hubble's law
25. A measure of the amount of light that a star actually emits
parallax
absolute magnitude
meteor
asteroid
26. Light distance travels in one year (9.5 trillion km)
lunar eclipse
irregular galaxy
refracting telescope
light-year
27. A system of galaxies containing from several to thousands of member galaxies
galaxy cluster
apogee
nebula
rotation
28. The most distant point in the orbit of the moon
comet
apogee
background radiation
red shift
29. Brahe's assistant - German astronomer who first discovered the three laws of planetary motion (1571-1630)
aphelion
Johannes Kepler
phases of the moon
apogee
30. The brilliant explosion of a dying supergiant star
Tycho Brahe
supernova
galaxy
heliocentric
31. A graph relating the temperature and brightness of stars
Hertzsprung-Russel Diagram
equinox
apogee
retrograde motion
32. The brilliant explosion of a dying supergiant star
supernova
reflecting telescope
big bang theory
Sir Isaac Newton
33. The apparent change in position of an object when seen from different places
Sir Isaac Newton
universal gravitation
nebulae
parallax
34. When the moon passes between earth and the sun - blocking the sunlight from reaching earth
solar eclipse
planet
moon
supergiant
35. A group of about 30 galaxies that includes the Milky Way
geocentric
apparent magnitude
Claudius Ptolemy
local group
36. A star that expands and cools once it runs out of hydrogen fuel
meteorite
terrestrial planet
red giant
Galileo Galilei
37. The name of our galaxy - a spiral galaxy that contains about 400 billion stars
cepheid variable
universal gravitation
nebula
milky way galaxy
38. A model of the solar system in which Earth and the other planets revolve around the sun
heliocentric
Sir Isaac Newton
nova
perigee
39. 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
universal gravitation
background radiation
chromatic abberation
element
40. A variable star that brightens and dims regularly - or pulses - and whose distance can be determined from its period of pulsation
lunar eclipse
meteroid
cepheid variable
apparent magnitude
41. Any natural satellite of a planet
equinox
Johannes Kepler
moon
Oort Cloud
42. A very small star with low temperature - reddish in color
supernova
red dwarf
planet
absolute magnitude
43. The theory that states that gravity will over come the expansion of the universe and bring everything together in an implosion
red shift
the big crunch
refracting telescope
light-year
44. English mathematician and physicist - discovered the law of universal gravitation
Sir Isaac Newton
wavelength
quasar
background radiation
45. The small - dense remains of a high-mass star after a supernova
red giant
equinox
heliocentric
neutron star
46. The average distance between the Earth and the sun - or approximately 150000000 km
astronomical unit (AU)
Kuiper Belt
local group
moon
47. A telescope that uses a curved mirror to collect and focus light
phases of the moon
elliptical galaxy
nebulae
reflecting telescope
48. Optical telescope that has a large convex lens that produces an image that is viewed through the eyepiece
reflecting telescope
refracting telescope
reflecting telescope
apparent magnitude
49. A group of stars that form a pattern in the sky
reflecting telescope
constellation
photon
neutron star
50. A system of two stars that revolve around each other under their mutual gravitation
red shift
binary star
terrestrial planet
meteorite