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Test your basic knowledge |
Cosmology
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. The family of radiant energy that includes light as a subset
White Dwarf
Oort cloud
Umbra
Electromagnetic Radiation
2. Mercury and venus
Open Cluster
Spectral Lines
Dark Matter
fewest moons
3. The instant of time after the Big Bang when space and time obtained their characteristics. (t=10^-43 sec when gravity freezes out-instant when gravity started existing as a separate force)
Bok Globule
Thickest atmosphere
Planck time
radio galaxy
4. The place in the sky that the Earth's axis points toward (can be either north or south)
Ole Roemer
Colestial Pole
partile horizon
Gravitational Lens
5. Ancient stream channels - flood planes - and sedimentary-type rock. Frozen water is found in the polar ice caps and in the soil.
aphelion
evidence of water on mars
Triple Alpha rocess
Oort Cloud
6. Venus
Thickest atmosphere
differential rotation
Hubble law
neutrino
7. Extremely round - lots of liquid water - ice rafts on surface ACTIVE SURFACE
How is winding dilemma solved?
Europa (Jupiters moon)
Photon
protostar
8. When the Sun is farthest south of the celestial equator (About December 22)
Winter Solstice
Light Pollution
Instability strip
Poor Cluster
9. The rotation period of the Earth measured relative to the Sun.
Neutron Star
Synodic Day
Thickest atmosphere
Coldest surface
10. The crust of a meteorite caused by its entry into Earth's atmosphere
interstellar dust
Electromagnetic Radiation: Microwave
OB Associations
fusion crust
11. Venus
anorthosite
critical density
Enke gap
hottest surface
12. A high-pressure bulge in Neptune's southern hemisphere
Cosmological Principle
slowest rotation
great dark spots
Titus-Bode Law
13. Medium bulge - moderately would arms - arms have H2 regions in them and look sort of lumpy
Sb spiral galaxy
conjunction
AGN
synchrotron radiation
14. A spectrum of light with energy at only a few wavelengths.
Kirkwood gaps
MOONS: largest size
Apparent Magnitude
Emission Spectrum
15. Any change in the speed or direction of an object's motion
Interstellar Extinction
Thermonuclear Fusion
Halo
acceleration
16. When the Moon entirely blocks the Sun.
Molecular Clouds
coma
Total Eclipse
Lagrangian Razor
17. A change in the wavelength of light caused by a motion between the observer and light (or wave) source (blue shift if getting closer - red shift if moving away)
Doppler Shift
tectonics of Mars
Umbra
radiant
18. The gap inthe outer portion of Saturn's A ring
Parsec
Main Sequence Stars
Enke gap
Blackbody Curve
19. Dying small mass stars lose their outer layers in a relatively gentle way - creating a round or bipolar nebula about the star (round like planets)
difference between maria and highlands of the moon.
Hyashi track
planetary nebula
zone
20. We can infer the absolute magnitude of pulsating variable stars by measuring their pulsation periods. The longer the pulsations - the greater their luminosities. We then again measure their apparent magnitudes - compare it with their absolute magnitu
semimajor axis
Pulsar
Cassini division
Cepheid variables
21. The gap etween saturn's A and B rings
Quasar
Kuiper belt
2 Reasons Why there are Supermassive Black holes at the center of every Galaxy
Cassini division
22. 1-orbit aroudn the sun 2- are in hydrostatic equilibrium and 'mostly round' 3- have not cleared debris around its orbit 4- are not satellites
Summer Solstice
Refractor
Enke gap
Dwarf planets
23. The elementary building blocks from which protons and neutrons are formed.
accretion disk
quarks
Neutron Star
Seeing
24. 100 nm 10 nm
Electromagnetic Radiation: Ultraviolet Light
Nowhere visible to us. If there are higher dimension then the center would be visible to someone who lives in one. If there are no higher dimensions then the center does not exist.
meteor shower
Kuiper belt
25. The process of acquiring material
White Dwarf
accretion
Blackbody
Secondary Mirror
26. A long-lived high-pressure bulge in Jupiter's southern hemisphere
Big Crunch
Electron
great red spot
Autumnal Equinox
27. A large - irregularly shaped rocky object orbiting the sun mostly between mars and jupiter. Left-over planetesimals
Active Optics
asteroid
Pixel
Occam's razor
28. Radiation (possibly left over from the big bang) that fills the universe. Perfect black body spectrum and tells us a bit aout how galaxies are formed.
Cosmic Microwave Background (CMB)
epicycle
dark matter
Nebula
29. Sa - Sb galaxies where two magnificent arms wind their way from nucleus out in a symmetrical manner.
Winter Solstice
E=mc2
Grand design spirals
tectonics of Mars
30. Mercury and venus
fewest moons
Olber's paradox
Lagrangian Razor
planetary nebula
31. A prominence seen against the disk of the sun
evidence of water on mars
Active Optics
Filament
Quasar
32. A method of finding a star's distance from its absolute magnitude and spectral type or color.
Differential Rotation
Callisto (Jupiter)
Color Index
Spectroscopic Parallax
33. A change in the wavelength of light caused by a motion between the observer and light (or wave) source (blue shift if getting closer - red shift if moving away)
Objective Lens
Doppler Shift
Lagrangian Razor
If it is in a denser medium - such as glass - it will move slower
34. Earth
Electromagnetic Radiation: X-Ray
Electromagnetic Radiation
fewest moons
Most dense
35. Large nebula consisting of very cold gas and dust
Globular Cluster
Disk
Molecular Clouds
Light Pollution
36. The point in its orbit where a planet is farthest from the sun
Energy Level
Electromagnetic Radiation: Radio
aphelion
plate tectonics
37. Dark areas on the sun that are cooler than the surrounding photosphere
AGN
Sunspots
Olber's paradox
Stephen-Boltzman Law
38. The rock that makes up the lunar maria
Proton-proton chain
mare basalt
Blackbody
Convection
39. Small moons that maintain the shape of rings around Saturn and Uranus
Brown dwarf
synchrotron radiation
Shepherd satellite
quasar
40. The lens in a telescope used to determine the magnification
Eyepiece Lens
Parallax
Biologicla life created the recycling of nitrogen - co2 - and the production of oxygen. Oxygen is heavier so the atmosphere held onto it easier than hydrogen and helium.
Perihelion
41. Where is the center of the expansion
Dark Matter
3 reasons we orbit satellites to observe universe
Cosmic Microwave Background (CMB)
Nowhere visible to us. If there are higher dimension then the center would be visible to someone who lives in one. If there are no higher dimensions then the center does not exist.
42. 30AU to 50Au from sun - consists of ancietn premordial objects made of frozen ice and dust-35000 objects or more that are larger than 100 km in diameter and many more smaller than this
Shepherd satellite
Eclipses of the Moons of Jupiter
Kuiper belt
Chromosphere
43. Mercury
Open Cluster
smallest diameter
meteoriod
Electromagnetic Radiation: X-Ray
44. The process similar to conduction by which energy moves from the solar core to the convective layer
Nebula
greehouse effects
density
Radiative Diffusion
45. When the Sun is farthest north of the celestial equator (about June 22)
Photon
Eclipses of the Moons of Jupiter
Summer Solstice
Nebula
46. A small spherical dark nebula
Bok Globule
Ecliptic
Apollo asteroids
cosmic fireball
47. Either Io -Europa - Ganymede - or Callisto
mapping the structure of Milky Way disk
radiant
Galilean satellite
Annular Eclipse
48. Small compact stars called white dwarfs can have material deposited on their surfaces. In time material heats up and explodes in surface nuclear reaction- star brightens - settles - repeats.
radio lobe
shape and color of SPIRAL galaxies
nova
dark energy
49. That which is responsible for Jupiter's magnetic field
Black Hole
meteor
tectonics of Earth
Liquid metallic hydrogen
50. An object that may remain after a star explodes
Flat - Remain Parallel - Exactly 1
Doppler Shift
Neutron Star
Plague