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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. Ganymede
Ole Roemer
Spectral Lines
MOONS: largest size
Electromagnetic Radiation: Radio
2. The rotation of a star or planet at different speeds at its equator and poles
2 Reasons Why there are Supermassive Black holes at the center of every Galaxy
differential rotation
Plank's Law
difference between maria and highlands of the moon.
3. The rotation period of the Earth measured relative to the stars.
Cosmic Microwave Background
Sidereal Day
Sunspots
Celestial Sphere
4. The location around an atom where an electron resides.
Energy Level
Black Hole
radio galaxy
Thermonuclear Fusion
5. Very center of galaxy. suggestion of a black hole
nucleus
isotropic
Neutron Star
Seeing
6. Sc galaxies where star formation and destruction is so rapid that supernova explosions are mainly responsible for compressing gas to create new stars.
self-propagating star formation
conjunction
Lagrangian Razor
A family of radiant energy- includes light
7. Milky way galaxy is a member - a small poor cluster-about 30 galaxies
The Local Group
Dark matter is located at center of clusters - pulling the cluster members into faster orbits--dark matter gravity keeps objects in galxies bound.
supermassive black hole
roche limit
8. The point in its orbit where a planet is farthest from the sun
aphelion
Granules
Open Cluster
Triple Alpha rocess
9. The most mass a white dwarf can have before collapsing to a neutron star
Chandrasekhar Limit
Terrestrial Planets
Galilean satellite
Flat - Remain Parallel - Exactly 1
10. The place in the sky that the Earth's axis points toward (can be either north or south)
E=mc2
Electromagnetic Radiation: Infrared
Colestial Pole
highlands
11. Venus (retrograde)
cosmological principle
slowest rotation
Hyashi track
greehouse effects
12. A term referring to Jupiter-like planets
Convection
accretion disk
jovian
Total Eclipse
13. The process responsible for creating the arms of flocculent spiral galaxies
Yes - frozen at the poles- remains protected from the suns rays
Self-Propogating Star Formation
Cosmic Microwave Background
A family of radiant energy- includes light
14. The location around an atom where an electron resides.
radio galaxy
In an expanding universe all galaxies see all other galaxies that are not gravitationally bound to them receding away. This is what we see in the Hubble Law. We infer that the Hubble law also holds true for all other galaxies.
Total Eclipse
Energy Level
15. The first rock-sized bodies that formed in the solar nebula from dust grains
partile horizon
chondrite
Cassini division
Convection
16. The line on an H-are diagram going from upper left to lower right where normal stars of different masses reside.
2 Reasons Why there are Supermassive Black holes at the center of every Galaxy
fusion crust
solar nebula
Main Sequence
17. The lens in a telescope used to determine the magnification
Dark Matter
interstellar dust
Eyepiece Lens
In an expanding universe all galaxies see all other galaxies that are not gravitationally bound to them receding away. This is what we see in the Hubble Law. We infer that the Hubble law also holds true for all other galaxies.
18. An element of a highly efficient - two-dimensional electronic light detector
Pixel
resonance
contrast northern lowlands and the southern highlands of mars...
Planck time
19. The rotation of a star or planet at different speeds at its equator and poles
A family of radiant energy- includes light
Main Sequence
differential rotation
partile horizon
20. The law stating that hotter blackbodies look bluer than cooler blackbodies.
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21. The north-south line passing directly overhead through the zenith.
Gravitational Lens
conjunction
Meridian
density
22. The powdered stone fragments that make up the lunar 'soil'
Objective Lens
condensation temperature
regolith
Electromagnetic Radiation: Ultraviolet Light
23. Young clusters in disk are irregularly shaped since they have no time to relax into the rounder relaxed shape of globular clusters-will constantly be torn apart and assimilated.
Absolute Magnitude
molecular clouds
Radiative Diffusion
open star clusters
24. Massive compact halo objects (MACHO) - weakly interacting massive particles (WIMPY's)
Dark matter candidates
Open Cluster
Pixel
Blackbody
25. Dark - reddish - low-pressure bands in Jupiter's atmosphere
Hipparchus
Black Hole
Halo
belt
26. A particle of light
Photon
resonance
synchrotron radiation
Oort Cloud
27. A nearby galaxy with a quasar-like nucleus. closer but less bright than quasars-weaker
Seyfert galaxy
Flocculent spirals
Proton-proton chain
chemical differentiation
28. The point in its orbit where a planet is farthest from the sun
aphelion
epicycle
Interstellar Extinction
Most dense
29. The process of acquiring material
radio galaxy
Prominence
planetesimal
accretion
30. The oldest grouping of stars - found in the galaxy halo
Particle Horizon
Interstellar Extinction
Globular Cluster
conjunction
31. A measure of the ability of a telescope to see fine detail
Ole Roemer
Resolving Power
cosmic singularity
Blackbody Curve
32. If stars have diff orbital periods - than any arms formed by stars will wind into a tight spiral pattern (billion yrs or so)
rotation curve=winding dilemma?
Clouds of sufuric acid (very inhospitable and brightest object in the sky) - process called greenhouse affect traps radiation making it 900 degrees at times - spins with retrograde rotation (sun rises in west) and takes 58.4 days for it to set. Thick
Black Hole
meteor shower
33. A word meaning 'the same everywhere throughout.'
Black Hole
homogeneous
Hubble law
chondrite
34. The name for the only seriously considered theory of the universe.
Main Sequence Stars
Big Bang
epicycle
MOONS: thickest atmosphere
35. The lens that gathers the light in a refractor
Inverse Square Law
MOONS: larger than mercury
Objective Lens
MOONS: roundest shape
36. A method of finding a star's distance from its absolute magnitude and spectral type or color.
Electron
Parsec
Focal Length
Spectroscopic Parallax
37. Earth
Cassegrain Focus
Planetary Nebula
Inverse Square Law
Most dense
38. How did Earth come to have an oxygen rich atmosphere?
Lagrangian Razor
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.
Penumbra
Refractor
39. The distance a moon can be from a planet before shattering from tidal forces
roche limit
Celestial Sphere
Gamma-ray Burst
quasar
40. Ancient stream channels - flood planes - and sedimentary-type rock. Frozen water is found in the polar ice caps and in the soil.
evidence of water on mars
roche limit
fastest rotation
Nucleus
41. Hot cells of gas that rise and fall in the hotosphere
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
Light Curve
Granules
Dwarf planets
42. Any change in the speed or direction of an object's motion
Steady State Theory (Leads to Olber's Paradox)
acceleration
Light-Year
critical density
43. Population 1- similar to the sun and 2% of elements are metal - Population 2- formed before gas was metal- only a fraction of mass is metal.
Flat - Flat
great red spot
Population 1 vs Population 2 stars
Electromagnetic Radiation: Infrared
44. The science of measuring the apparent magnitudes of stars by imaging them through different filters.
greehouse effects
Cepheid variables
Light Pollution
Photometry
45. The mirror that determines the focus configuration of a reflector
Chandrasekhar Limit
Gravitational Lens
standard candle
Secondary Mirror
46. A large and bright but cool star.
Open - flat - and closed.
Red Giant
Spectroscopic Parallax
Poor Cluster
47. Light scattered through the atmosphere that degrades astronomical images
bulge
Light Pollution
Winter Solstice
Resolving Power
48. Elliptical orbits that come inside orbit of the Earth.
Absorption Spectrum
Flat - Flat
Pixel
Apollo asteroids
49. The linear correlation between the rate of the expansion of the universe and distance. Says that as galaxies get farther away in space - the speed with which they recede from us increases. So we can measure the amount of recessional velocity and use
Open - flat - and closed.
CCD
Hubble law
Lagrangian Razor
50. The mix of pure photon energy that emerged at the start of the universe.
Dark Nebula
quarks
Precession
cosmic fireball