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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. Approximate speed of light in a vacuum
blazar
300000 KM/sec
SETI
radio galaxy
2. The slow wobble of the Earth on its rotation axis.
Precession
CMB
Differential Rotation
MOONS: thickest atmosphere
3. The lens in a telescope used to determine the magnification
Drake equation
MOONS: roundest shape
fewest moons
Eyepiece Lens
4. The distance between a lens and its focal plane
Focal Length
Dark matter candidates
Penumbra
Seeing
5. What do we think the actual fate of the universe will be and why do we think this?
Particle Horizon
Observations of distant type Ia supernovae indicate that the expansion of the universe is speeding up with time - not slowing down! So there must be a force causing this.
Doppler Shift
Primary Mirror
6. Plate tectonics due to thickness of crust and maintain their general form when they collide-where most volcanoes are.
tectonics of Earth
fusion crust
Zenith
Rich vs poor clusters
7. The point in its orbit where a planet is farthest from the sun
planetary nebula
Primary Mirror
aphelion
Population 1 vs Population 2 stars
8. A particle of light
Most dense
Photon
Reflector
Jupiters red spot
9. Material that shoots rapidly out into space. Flares cause Auroras
Electromagnetic Radiation: Ultraviolet Light
Main Sequence Stars
Flare
aurora
10. When massive objects bend space and time enough to create multiple images of an object located behind them
Sa spiral galaxy
Metals
Gravitational Lens
greatest elongation
11. A technique using computer-controlled mirrors to sharpen images distorted by the atmosphere
tectonics of Earth
rotation curve=winding dilemma?
Active Optics
radiation dominated universe
12. All wavelengths of light emitted by a blackbody.
Apollo asteroids
Blackbody Curve
Supernova (You can be my supernova girl)
Cosmic Microwave Background
13. Galaxies whose nuclei emit jets of materil at high speeds. material comes from supermassive black holes
Ammonia - methane - and water
Titus-Bode Law
blazar
radio galaxy
14. A long-lived high-pressure bulge in Jupiter's southern hemisphere
Halo
Plague
great red spot
Hipparchus
15. The place in the sky that the Earth's axis points toward (can be either north or south)
Ole Roemer
Primary Mirror
roche limit
Colestial Pole
16. 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
Kuiper belt
Cepheid variables
Filament
High Velocity Stars
17. Light scattered through the atmosphere that degrades astronomical images
Red Giant Branch Star
Metals
Light Pollution
Earth resurfaces itself due to erosion and plate tectonics - while the moon has neither.
18. A plot of star absolute magnitude verses spectral type.
highlands
H-are Diagram
Kirchhoff's Law
Horizontal Branch Star
19. Norhern lowlands- darker in color and have far fewer craters as if an ancient sea or ice field covered them. southern highlands- much higher in density of craters.
density parameter
Electromagnetic Radiation: Ultraviolet Light
contrast northern lowlands and the southern highlands of mars...
epicycle
20. A phenomenon seen when the Earth passes through the orbit of a burned out comet
Autumnal Equinox
Electromagnetic Radiation: Infrared
meteor shower
mapping the structure of Milky Way disk
21. A particle of light.
Photon
Light Curve
HII Region
Gamma-ray Burst
22. The equation that describes how matter equates with energy
Absolute Magnitude
shape and color of ELLIPTICAL galaxies
E=mc2
most moons
23. Mercury - Venus - Earth - Mars
rotation curve = dark matter?
Self-Propogating Star Formation
Terrestrial Planets
Molecular Clouds
24. The layer of the sun just above the photosphere
supermassive black hole
Magnification
Chromosphere
Cosmic Microwave Background (CMB)
25. The material from which the solar system formed
Color Index
protostar
solar nebula
meteoriod
26. A star that is burning hydrogen to helium in a shell surrounding it's core
Apollo asteroids
If it is in a denser medium - such as glass - it will move slower
Red Giant Branch Star
cosmological principle
27. Arcs of increased mass concentration that slow stars and gas down as they orbit through which cause the formation of stars.
cosmology
Milky way Galaxy
Umbra
density waves
28. Sc galaxies
Electromagnetic Radiation: Gamma Ray
Flocculent spirals
Gravitational Lens
Gamma-ray Burst
29. The elementary building blocks from which protons and neutrons are formed.
quarks
Triple Alpha rocess
Focal Length
Sc spiral galaxy
30. Matter that reveals itself only through its gravitational attraction
Continuous Spectrum
Plank's Law
Dark Matter
Focal Length
31. Collections of young - hot stars
Population 1 vs Population 2 stars
OB Associations
mare basalt
density
32. Disk dust grains are made of all the elements that are not in gaseous form in space which blocks starlight and causes interstellar extinction
scarp
Cassini division
Ammonia - methane - and water
interstellar dust
33. An important quality of telescopes that increases as the square of the primary mirror or objective lens
Light Gathering Power
Cepheid Variable
Sunspots
Secondary Mirror
34. The high- temperatature outer layer of the sun
Differential Rotation
opposition
Corona
dark matter
35. The rock that makes up the lunar maria
OB Associations
Largest diameter
mare basalt
SETI
36. Then the Sun moves from north to south across the celestial equator (about September 23)
Electron
meteor
Autumnal Equinox
Synchrotron Rotation
37. A very dense - highly populated cluster of galaxies
Rich Cluster
The Big Bang Theory
OB Associations
300000 KM/sec
38. How is the Hubble Law consistent with an expanding universe?
standard candle
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.
Perihelion
Globular Cluster
39. The displacement of spectral lines to redder colors caused by the expansion of the universe.
opposition
thinnest atmosphere
cosmological red shift
quasar
40. Extremely round - lots of liquid water - ice rafts on surface ACTIVE SURFACE
Meridian
Europa (Jupiters moon)
Spectroscopic Parallax
H2 Regions
41. When the Moon entirely blocks the Sun.
Electromagnetic Radiation
Total Eclipse
Nova
aurora
42. The amount an image is enlarged by a telescope
Magnification
asteroid
direct motion
Rich vs poor clusters
43. First accurately measured the speed of light in a vacuum
Gamma ray bursts
Ole Roemer
Active Optics
Shepherd satellite
44. Sa - Sb galaxies where two magnificent arms wind their way from nucleus out in a symmetrical manner.
Asymptotic giant Branch Star
partile horizon
Grand design spirals
Brown dwarf
45. The rock that makes up the lunar highlands
The Big Bang Theory resolves Olber's Paradox
Focal Plane
anorthosite
Occam's razor
46. A perfect absorber and radiator of electromagnetic radiation.
Blackbody
Focal Plane
radio lobe
Blackbody Curve
47. A star fusing hydrogen to helium in it's core
planetary nebula
Disk
Main Sequence Stars
Corona
48. When the Sun is farthest north of the celestial equator (about June 22)
contrast northern lowlands and the southern highlands of mars...
Summer Solstice
jovian
Kirkwood gaps
49. A repeated - periodic push or pull capable of summing into a larger push or pull
resonance
Primary Mirror
inferior planets
planetesimal
50. 100 nm 10 nm
difference between maria and highlands of the moon.
Terrestrial Planets
Electromagnetic Radiation: Ultraviolet Light
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.