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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. A collection of comets in the plane of the solar system - located beyond the orbit of Pluto
Color Index
most eccentric orbit
Kuiper belt
radiant
2. The entity from which the whole universe is postulated to have come from.
Olber's paradox
cosmic singularity
Celestial Equator
radio galaxy
3. The rock that makes up the lunar highlands
Electromagnetic Radiation: Radio
anorthosite
Black Hole
Flare
4. Earth
blazar
Ground State
Flare
Most dense
5. The average distance between the Earth and the Sun (=1.5 x10^8km)
We don't know. It might be but does not have to be.
Astronomical Unit
coma
radiation dominated universe
6. Long - meandering cliff formed when a planet surface cools and shrinks
Flocculent spirals
Secondary Mirror
scarp
Absolute Magnitude
7. When the Sun is farthest south of the celestial equator (About December 22)
Synodic Day
Winter Solstice
Atomic Number
reflection star clusters
8. 10 nm 10^2 nm
Coldest surface
Cosmological Principle
Electromagnetic Radiation: X-Ray
Rich vs poor clusters
9. Thick rigid crust - no longer has plate tectonics but still has convective hot spots that create earth-like volcanoes except that last for billions of years because of lack of tectonics.
Ground State
Filament
rotation curve=winding dilemma?
tectonics of Mars
10. A subatomic particle with a negative charge. It creates light.
supermassive black hole
Kirkwood gaps
Electron
meteoriod
11. Light-flaky crust - convective currents cause it to wrinkle and bunch (1/5 of surface). uniform cratering suggests lack of weathering and tectonics. volcanoes are flat due to atmospheric pressure.
tectonics of Venus
Precession
most eccentric orbit
Jupiters red spot
12. A measure of the seasonal shifting of a star's position against farther stars or galaxies. The closer the star - the greater is the angular distance it shifts. We use it to find distances to stars that are up to 1000 pc away.
Parallax
self-propagating star formation
deferent
solar nebula
13. The law that syas light energy from a blackbody increases as (temperature^4)
Stephen-Boltzman Law
300000 KM/sec
deferent
Flare
14. The 'edge' of the universe. Light beyond this has not reached us yet.
partile horizon
Light Gathering Power
most moons
Main Sequence Stars
15. Plate tectonics due to thickness of crust and maintain their general form when they collide-where most volcanoes are.
great dark spots
tectonics of Earth
interstellar dust
Io (jupiters moon)
16. A bridge of material held in position above the solar surface. They can remain for hours even days
fusion crust
Continuous Spectrum
Prominence
Photosphere
17. A location on an H-are Diagram where evolving stars pulsate
quarks
Electromagnetic Radiation: Ultraviolet Light
greatest elongation
Instability strip
18. A method of finding a star's distance from its absolute magnitude and spectral type or color.
Geocentric
supernova
Spectroscopic Parallax
Metals
19. An energetic event taking place in the early universe
High and low pressure which stretch into bands due to the rapid differential rotation. deeper - darker colors are in the belts and zones are lighter
Supercluster
Negative - Diverge - Less than 1
Gamma-ray Burst
20. Matter that reveals itself only through its gravitational attraction
quasar
Dark Matter
Synchrotron Rotation
Nebula
21. The trapping of heat by carbon dioxide or other gases in the Earth's atmosphere.
Zenith
greehouse effects
Big Crunch
Eyepiece Lens
22. Thick rigid crust - no longer has plate tectonics but still has convective hot spots that create earth-like volcanoes except that last for billions of years because of lack of tectonics.
Cosmic Microwave Background
quasar
tectonics of Mars
greehouse effects
23. A method of finding a star's distance from its absolute magnitude and spectral type or color.
Differential Rotation
neutrino
Ionization
Spectroscopic Parallax
24. The state of having a balance between inward and outard pressures in a gas--the inward force from gravity is balanced by the outward force from heat.
Hydrostatic Equilibrium
Positive - Converge - Greater than 1
Seeing
great dark spots
25. The area behind a lens where images are resolved
Focal Plane
tectonics of Mars
Cassegrain Focus
Light Curve
26. The lens that gathers the light in a refractor
Objective Lens
gravity
Density Wave
Cepheid Variable
27. 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)
synchronous rotation
accretion disk
most eccentric orbit
Doppler Shift
28. Elliptical orbits that come inside orbit of the Earth.
Apollo asteroids
synchrotron radiation
radiation dominated universe
Focal Length
29. 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)
bulge
planetary nebula
aphelion
Spectroscopy
30. When material is heated and moves taking the heat energy with it
Convection
tectonics of Mars
Chandrasekhar Limit
Largest diameter
31. Stars fromt he Halo that have drifted into the disk. as earth zooms past them in a faster orbit they appear to be going backward very fast
High Velocity Stars
cosmological principle
Milky way Galaxy
chondrite
32. The mirror that gathers the light in a reflector
standard candle
Primary Mirror
Active Optics
Vernal Equinox
33. A term referring to Earth-like planets
rotation curve=winding dilemma?
planetary nebula
terrestrial planet
Granules
34. The oldest grouping of stars - found in the galaxy halo
Globular Cluster
SETI
bulge
Light Gathering Power
35. The distance a moon can be from a planet before shattering from tidal forces
Dark matter is located at center of clusters - pulling the cluster members into faster orbits--dark matter gravity keeps objects in galxies bound.
Open Cluster
greatest elongation
roche limit
36. In Ptolemy's geocentric solar system - the small circle on which a planet moved.
anorthosite
epicycle
Electromagnetic Radiation: X-Ray
molecular clouds
37. Sa - Sb galaxies where two magnificent arms wind their way from nucleus out in a symmetrical manner.
Perihelion
Inverse Square Law
Grand design spirals
Occam's razor
38. When material is heated and moves taking the heat energy with it
Ionization
Focal Length
Convection
HII Region
39. Jupiter
Main Sequence Stars
most moons
Plank's Law
greatest elongation
40. The final end state of an intermediate to high mass star. An entity in which all the electrons have been pushed into the protons.
Filament
Prominence
Neutron Star
Photometry
41. A very distant - star-like object with huge - broad emission lines. Probably the nucleus of a distant active galaxy.
Main Sequence Stars
MOONS: most geologically active
quasar
Turn off Point
42. Form honeycomb like patterns surrounding empty or nearly empty voids.
superclusters
Continuous Spectrum
regolith
Supercluster
43. 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)
Electromagnetic Radiation: Ultraviolet Light
How is winding dilemma solved?
A family of radiant energy- includes light
Doppler Shift
44. Latin for 'cloud'. A word used to describe the collections of gas and dust in the Milky Way and other galaxies
density parameter
Nebula
Lagrangian Razor
thinnest atmosphere
45. The final end state of a high mass star. .An entity for which gravity has completely overwhelmed all other forces of nature.
Bok Globule
matter dominated universe
Winter Solstice
Black Hole
46. A small spherical dark nebula
greatest elongation
Bok Globule
bulge
Turn off Point
47. The family of radiant energy that includes light as a subset
Rich Cluster
Electromagnetic Radiation
Pulsar
smallest diameter
48. The equation that describes how matter equates with energy
greatest elongation
Gravity only pulls matter back together. Therefore - if gravity is the only force that operates on cosmic scales then the expansion of the universe should decrease with time. The critical density is the value of matter density sufficient to halt the
E=mc2
Geocentric
49. The telescope configuration that has the focus placed at the back of the primary mirror
Cassegrain Focus
plate tectonics
Photosphere
Summer Solstice
50. Hurricane-like vortex in southern-hemisphere winds to north and south blow in opposite directions which keep it spinning and with no subsurface features like mountians it persists.
Parallax
Jupiters red spot
fewest moons
interstellar dust