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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 spectrum of light with energy at only a few wavelengths.
Colestial Pole
Black Hole
Emission Spectrum
Electromagnetic Radiation: Ultraviolet Light
2. A cloud of ionized hydrogen. Formed when young stars heat the surrounding gas
HII Region
Atomic Number
Geocentric
planetary nebula
3. The location in an H-are diagram of a star cluster - where stars have just left the main sequence. Used to estimate the cluster age.
Turn off Point
Sidereal Day
isotropic
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
4. Form honeycomb like patterns surrounding empty or nearly empty voids.
shape and color of ELLIPTICAL galaxies
fewest moons
superclusters
Population 1 vs Population 2 stars
5. Distribution of dust (tells us disk is thin) - find distances to O&B stars and H2 regions (arms are sights of star formation and OB stars live and die at location of birth) -Milky way has four arms. Sun is in spur apart from arms.
Trojan asteroids
Objective Lens
Earth resurfaces itself due to erosion and plate tectonics - while the moon has neither.
mapping the structure of Milky Way disk
6. A spread of light with an uninterrupted wavelength distribution of energy.
shape and color of SPIRAL galaxies
Continuous Spectrum
belt
Precession
7. Why do Galaxies move very rapidly in the interiors of the dense clusters?
Astronomical Unit
Dark matter is located at center of clusters - pulling the cluster members into faster orbits--dark matter gravity keeps objects in galxies bound.
Inverse Square Law
Extrasolar Planet
8. The location in the Milky Way where stars orbit like a solid wheel
Hubble law
Sc spiral galaxy
Bulge
fastest rotation
9. The name for the only seriously considered theory of the universe.
Electron
Gamma-ray Burst
Limb darkening
Big Bang
10. All wavelengths of light emitted by a blackbody.
Atomic Number
Electromagnetic Radiation: Visible Light
Blackbody Curve
Kuiper belt
11. A collection of comets in the plane of the solar system - located beyond the orbit of Pluto
MOONS: larger than mercury
rotation curve=winding dilemma?
Eclipses of the Moons of Jupiter
Kuiper belt
12. Relativity predicts that nothing can travel faster than the speed of light in a vacuum - How can it move slower?
SETI
Hyashi track
If it is in a denser medium - such as glass - it will move slower
meteorite
13. A term referring to Earth-like planets
terrestrial planet
mass
Electromagnetic Radiation: Visible Light
greatest elongation
14. A planet that is farther from the sun than the Earth is
Callisto (Jupiter)
radiant
Superior planets
Astronomical Unit
15. The apparent magnitude a star would have if it were at a distance of 10 parsecs.
Absolute Magnitude
Callisto (Jupiter)
regolith
Prominence
16. A continuous spectrum of light missing energy at a few wave lengths.
condensation temperature
Absorption Spectrum
roche limit
density waves
17. A spectrum of light with energy at only a few wavelengths.
Emission Spectrum
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.
zone
radiation dominated universe
18. 10^2 nm 10^7 nm
Flare
HII Region
Electromagnetic Radiation: Gamma Ray
Hipparchus
19. Sc galaxies
Flocculent spirals
A family of radiant energy- includes light
Astronomical Unit
Metals
20. A particle of light.
radiation pressure
Photon
Magnification
Superior planets
21. A term referring to the orbital character of stars near the Sun
supernova
regolith
Differential Rotation
CCD
22. The rock that makes up the lunar highlands
The Big Bang Theory
Perihelion
anorthosite
Energy Level
23. Earth
Limb darkening
Most dense
cosmic singularity
general star population
24. The rotation period of the Earth measured relative to the Sun.
Enke gap
Brown dwarf
Light Gathering Power
Synodic Day
25. The mass of an object divided by its volume
Io (jupiters moon)
dark matter
Winter Solstice
density
26. A star that has become a red giant for the second and final time. It is burning helium to carbon in a shell surrounding the core
Olber's paradox
nucleus
Make up of the terrestrial planets
Asymptotic giant Branch Star
27. Clouds of low density gas often found glowing faintly on either side of an AGN.
Light-Year
Hipparchus
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
radio lobe
28. VENUS
cosmic singularity
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
Light Curve
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.
29. A toroidal or donut-shaped collection of material attracted to a central body like a star or black hole. Dust around an object
Focal Length
Parallax
asteroid
accretion disk
30. The dark - relativley smooth areas on the moon; Latin for sea
Photosphere
Maria
dark energy
Light Curve
31. The elementary building blocks from which protons and neutrons are formed.
greehouse effects
Electromagnetic Radiation
Electron
quarks
32. The organization of clusters of galaxies into sheets and strings
comet
Supercluster
Galilean satellite
Resolving Power
33. What do we think the actual fate of the universe will be and why do we think this?
synchronous rotation
Dark matter candidates
disk
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.
34. The north-south line passing directly overhead through the zenith.
Spectroscopy
Callisto (Jupiter)
plate tectonics
Meridian
35. The law that predicts the possible types of spectra.
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36. The oldest terrain on the moon
Eyepiece Lens
radio lobe
shape and color of ELLIPTICAL galaxies
highlands
37. Mercury
contrast northern lowlands and the southern highlands of mars...
quasar
thinnest atmosphere
Drake equation
38. The rotation of a star or planet at different speeds at its equator and poles
Big Bang
differential rotation
Synchrotron Rotation
Positive - Converge - Greater than 1
39. As open clusters age - they push gas away but dust remains this can reflect light giving the cluster a blue-ish color. also called reflection nebula
radio galaxy
Planetary Nebula
Halo
reflection star clusters
40. 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.
H2 Regions
Jupiters red spot
Open Cluster
Refractor
41. Infinitely long -> 10 cm
Electromagnetic Radiation: Radio
Absorption Spectrum
Earth resurfaces itself due to erosion and plate tectonics - while the moon has neither.
reflection star clusters
42. The mirror that determines the focus configuration of a reflector
Astronomical Unit
Secondary Mirror
Kirkwood gaps
Olber's paradox
43. Places in the asteroid belt - caused by resonance with Jupiter - where there are no asteroids
greehouse effects
Kirkwood gaps
contrast northern lowlands and the southern highlands of mars...
Stephen-Boltzman Law
44. 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.
Continuous Spectrum
neutrino
cosmic singularity
2 Reasons Why there are Supermassive Black holes at the center of every Galaxy
45. The lens that gathers the light in a refractor
Objective Lens
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.
planetary nebula
planetesimal
46. A planet that is farther from the sun than the Earth is
bulge
Electromagnetic Radiation: Ultraviolet Light
Superior planets
CNO Cycle
47. A rock or iron specimen that has fallen from space
dark energy
meteorite
Nucleus
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
48. The layer of the sun just above the photosphere
Red Giant Branch Star
Secondary Mirror
interstellar dust
Chromosphere
49. The area behind a lens where images are resolved
Focal Plane
Spectroscopy
Void
Dark Matter
50. Heavier elements such as iron - silicon - magnesium - sulfer - nickel
Make up of the terrestrial planets
meteorite
Flare
Reflector