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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. Population 1 with higher metals and contain many young stars in star clusters. Distribution of stars is everywhere in disk (arms only have 5% more stars)
MOONS: most geologically active
molecular clouds
general star population
Oort Cloud
2. 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.
Cassini division
Active Optics
Sunspot cycle
tectonics of Mars
3. Flat disk with gas - dust - H2 regions - molecular clouds - dust young stars and remnants of old planetary nebula and supernova remnants. stars spin together with similar velocities called differential rotation
molecular clouds
disk
Limb darkening
density
4. A collection of galaxies like the one the Milky Way belongs to
Photometry
widmanstatten pattern
Hyashi track
Poor Cluster
5. Why does the earth have few craters while the moon has many?
fusion crust
Earth resurfaces itself due to erosion and plate tectonics - while the moon has neither.
Primary Mirror
supermassive black hole
6. When a planet lines up with the sun inthe sky
conjunction
Black Hole
Perihelion
Flat - Flat
7. The normal eastward movement of a planet against the background of hte distant stars.
acceleration
Cepheid Variable
direct motion
general star population
8. Light-colored high-pressure bands in Jupiter's atmosphere
evidence of water on mars
HII Region
accretion disk
zone
9. Relativity predicts that nothing can travel faster than the speed of light in a vacuum - How can it move slower?
Shepherd satellite
If it is in a denser medium - such as glass - it will move slower
The Local Group
Flare
10. A measure of how an object resists accelerating when acted upon by a force. It is proportional the amount of matter in an object
Eclipses of the Moons of Jupiter
Liquid metallic hydrogen
mass
Void
11. The most mass a white dwarf can have before collapsing to a neutron star
retrograde motion
Extrasolar Planet
Drake equation
Chandrasekhar Limit
12. Ganymede and Titan
Coronal Loop
Electromagnetic Radiation: Gamma Ray
belt
MOONS: larger than mercury
13. Collections of young - hot stars
MOONS: largest size
mass
Population 1 vs Population 2 stars
OB Associations
14. Comglomerates of ice and rock that orbit the sun in highly elliptical paths
comet
cosmological red shift
Absolute Magnitude
meteoriod
15. The layer of the sun just above the photosphere
Chromosphere
Open - flat - and closed.
SETI
supernova
16. The apparent path of the Sun through the stars on the celestial sphere.
opposition
open star clusters
Ecliptic
Focal Plane
17. What causes the zones and belts on jupiter and saturn?
terrestrial planet
scarp
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
mapping the structure of Milky Way disk
18. The north-south line passing directly overhead through the zenith.
Cosmological Principle
Meridian
mapping the structure of Milky Way disk
solar nebula
19. 10^2 nm 10^7 nm
Superior planets
Instability strip
Electromagnetic Radiation: Gamma Ray
Chromosphere
20. A technique using computer-controlled mirrors to sharpen images distorted by the atmosphere
Ammonia - methane - and water
synchronous rotation
Light: travels like a wave - detected like a particle
Active Optics
21. The process of acquiring material
Celestial Equator
superclusters
accretion
Pulsar
22. The area behind a lens where images are resolved
fewest moons
Reflector
Focal Plane
coma
23. Jupiter - Saturn - Uranus - Neptune
MOONS: most geologically active
Flocculent spirals
Radiative Diffusion
Jovian Planets
24. The equation that describes how matter equates with energy
Pixel
matter dominated universe
E=mc2
Sc spiral galaxy
25. 1. We see rapid movements or high energy radiation coming at some level from the nuclei of nearly every galaxy we have looked at. 2. We suspect that the creation of these supermassive black holes is part of the galaxy formation process.
2 Reasons Why there are Supermassive Black holes at the center of every Galaxy
Sc spiral galaxy
Kirchhoff's Law
Focal Plane
26. A spectrum of light with energy at only a few wavelengths.
Gamma ray bursts
Cosmic Microwave Background (CMB)
general star population
Emission Spectrum
27. A subatomic particle with a negative charge. It creates light.
density parameter
Electron
Enke gap
Interstellar Extinction
28. Theory virtually demands that the geometry of the universe be ______. Results of measuring lumps in the cosmic background radiation indicate that the universe geometry is ________.
CCD
Flat - Flat
Kirchhoff's Law
homogeneous
29. A continuous spectrum of light missing energy at a few wave lengths.
bulge
Absorption Spectrum
Void
cosmology
30. What do we think the actual fate of the universe will be and why do we think this?
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.
Penumbra
Rich Cluster
condensation temperature
31. The mirror that gathers the light in a reflector
Annular Eclipse
Quasar
Primary Mirror
Photon
32. A word used in astronomy to describe all elements besides hydrogen and helium
Oort cloud
Parallax
Metals
zone
33. When material is heated and moves taking the heat energy with it
coma
Convection
Photosphere
Flocculent spirals
34. A star fusing hydrogen to helium in it's core
mass
interstellar dust
Cassini division
Main Sequence Stars
35. Approximate speed of light in a vacuum
Electromagnetic Radiation: Gamma Ray
300000 KM/sec
CNO Cycle
Enke gap
36. The science of measuring the apparent magnitudes of stars by imaging them through different filters.
synchrotron radiation
Spectroscopic parallax
Photometry
Photon
37. The distance light travels in one year (=9.46x10^12km).
Light-Year
Magnification
Metals
Poor Cluster
38. The distance between a lens and its focal plane
Big Bang
mare basalt
Focal Length
tectonics of Earth
39. Very center of galaxy. suggestion of a black hole
anorthosite
meteor shower
Void
nucleus
40. The lens in a telescope used to determine the magnification
Particle Horizon
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
Electromagnetic Radiation: Microwave
Eyepiece Lens
41. Sulfurous volcanoes - pools of liquid sulfur - surface resembles cheese pizza ACTIVE SURFACE
Io (jupiters moon)
acceleration
Dark matter is located at center of clusters - pulling the cluster members into faster orbits--dark matter gravity keeps objects in galxies bound.
Drake equation
42. Distance from sun to nucleus- 8 kiloparsecs (26000 LY) - diameter of Milky way- 150000 LY - length for sun to orbit once around milky way- 250 million years
Europa (Jupiters moon)
Callisto (Jupiter)
Electron
Milky way Galaxy
43. Jupiter
meteor shower
Kuiper belt
Hubble law
Largest diameter
44. Medium bulge - moderately would arms - arms have H2 regions in them and look sort of lumpy
Plague
Hubble constant
Sb spiral galaxy
Light: travels like a wave - detected like a particle
45. Latin for 'cloud'. A word used to describe the collections of gas and dust in the Milky Way and other galaxies
interstellar dust
Nebula
Flat - Remain Parallel - Exactly 1
Pixel
46. Places in the asteroid belt - caused by resonance with Jupiter - where there are no asteroids
Kirkwood gaps
AGN
highlands
Nova
47. The law that syas light energy from a blackbody increases as (temperature^4)
Stephen-Boltzman Law
bulge
Ammonia - methane - and water
Triple Alpha rocess
48. The rate of expansion of the universe.
Hubble constant
Main Sequence Stars
density
Hipparchus
49. An efficient - two-dimensional electronic light detector. Common in digital cameras - they revolutionized astronomical imaging
Void
The Local Group
CCD
Neutron Star
50. 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
Supernova (You can be my supernova girl)
quarks
open star clusters
Kuiper belt