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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. Places in the asteroid belt - caused by resonance with Jupiter - where there are no asteroids
most eccentric orbit
solar nebula
Emission Spectrum
Kirkwood gaps
2. A nearby galaxy with a quasar-like nucleus. closer but less bright than quasars-weaker
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.
Seyfert galaxy
The Big Bang Theory resolves Olber's Paradox
gravity
3. Why does the earth have few craters while the moon has many?
open star clusters
fastest rotation
Earth resurfaces itself due to erosion and plate tectonics - while the moon has neither.
Sa spiral galaxy
4. The entity responsible for spiral arms in grand-design spiral galaxies
Autumnal Equinox
Density Wave
force
Summer Solstice
5. First accurately measured the speed of light in a vacuum
Ole Roemer
plate tectonics
Autumnal Equinox
Ecliptic
6. The larger bodies that formed early in teh solar nebula that were chemically differentiated
Refractor
The Big Bang Theory resolves Olber's Paradox
planetesimal
Umbra
7. The entity responsible for spiral arms in grand-design spiral galaxies
Celestial Sphere
Density Wave
least dense
highlands
8. Is space infinitely large?
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9. In Ptolemy's geocentric solar system - the small circle on which a planet moved.
epicycle
Drake equation
Cassegrain Focus
Quasar
10. The act of removing an electron from an atom.
The Local Group
Thermonuclear Fusion
Light-Year
Ionization
11. The rotation period of the Earth measured relative to the stars.
Sidereal Day
superclusters
epicycle
cosmic fireball
12. The point directly overhead.
Zenith
shape and color of SPIRAL galaxies
Light: travels like a wave - detected like a particle
quasar
13. An evolved star - past the helium flash that is burning helium to carbon in it's cores
Horizontal Branch Star
tectonics of Venus
H2 Regions
reflection star clusters
14. A star fusing hydrogen to helium in it's core
Main Sequence
Main Sequence Stars
Enke gap
Planetary Nebula
15. A nearby galaxy with a quasar-like nucleus. closer but less bright than quasars-weaker
Synodic Day
Seyfert galaxy
mapping the structure of Milky Way 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.
16. A high-pressure bulge in Neptune's southern hemisphere
Halo
The Local Group
great dark spots
comet
17. Material that shoots rapidly out into space. Flares cause Auroras
Planck time
semimajor axis
Instability strip
Flare
18. Sulfurous volcanoes - pools of liquid sulfur - surface resembles cheese pizza ACTIVE SURFACE
Io (jupiters moon)
Main Sequence Stars
Apollo asteroids
3 reasons we orbit satellites to observe universe
19. A massive variable star used to find distances to the galaxies or clusters that contain them.
Thermonuclear Fusion
Cepheid Variable
Sa spiral galaxy
direct motion
20. The temp at which a substance in the vacuum of space solidifies
Reflector
condensation temperature
Rich Cluster
Parallax
21. Ganymede and Titan
MOONS: larger than mercury
greehouse effects
Light: travels like a wave - detected like a particle
cosmic fireball
22. Massive compact halo objects (MACHO) - weakly interacting massive particles (WIMPY's)
Main Sequence
Dark matter candidates
MOONS: largest size
Electromagnetic Radiation: Ultraviolet Light
23. A huge sphere of tenuous gas surrounding the nucleus of a comet
cosmic singularity
coma
CMB
Gamma ray bursts
24. An object that may remain after a star explodes
300000 KM/sec
Stephen-Boltzman Law
weight
Neutron Star
25. 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
scarp
Asymptotic giant Branch Star
contrast northern lowlands and the southern highlands of mars...
Shepherd satellite
26. Sa - Sb galaxies where two magnificent arms wind their way from nucleus out in a symmetrical manner.
Hydrostatic Equilibrium
Milky way Galaxy
Proton-proton chain
Grand design spirals
27. The rock that makes up the lunar highlands
Lagrangian Razor
disk
Self-Propogating Star Formation
anorthosite
28. The normal eastward movement of a planet against the background of hte distant stars.
HII Region
direct motion
mapping the structure of Milky Way disk
Spectroscopic Parallax
29. The wavelengths where a specific element can absorb or emit light.
Spectral Lines
Yes - frozen at the poles- remains protected from the suns rays
synchronous rotation
H2 Regions
30. Sc galaxies
Flocculent spirals
The Local Group
Winter Solstice
MOONS: most geologically active
31. A younger cluster of stars - found in the galaxy disk
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
Open Cluster
planetary nebula
Colestial Pole
32. Highlands: rocks are made of lighter anorthosite (similar to old earth rocks) Maria: rocks made of heavy mare basalt (volcanic rock) everywhere else is loose regolith created by meteoric impact.
Big Bang
difference between maria and highlands of the moon.
Electromagnetic Radiation: Gamma Ray
White Dwarf
33. 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)
conjunction
rotation curve=winding dilemma?
planetary nebula
Blackbody Curve
34. The state of having a balance between inflowing and outflowing heat-- the temp at every radial point is different but constant
The Big Bang Theory
Thermal Equilibrium
fastest rotation
Kirkwood gaps
35. Jupiter
most eccentric orbit
tectonics of Earth
smallest diameter
Largest diameter
36. The lens in a telescope used to determine the magnification
condensation temperature
superclusters
deferent
Eyepiece Lens
37. The 11 or 22 period on the sun durin which sunspots increase - decrease - change polarity - increase and decrease again.
White Dwarf
tectonics of Mars
Sunspot cycle
comet
38. The dimming of starlight by intervening dust
CNO Cycle
Interstellar Extinction
Shepherd satellite
Planetary Nebula
39. A continuous spectrum of light missing energy at a few wave lengths.
Photometry
Absorption Spectrum
300000 KM/sec
Make up of the jovian planets
40. 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
cosmology
Trojan asteroids
Continuous Spectrum
Cepheid variables
41. The apparent path of the Sun through the stars on the celestial sphere.
thinnest atmosphere
Halo
Ecliptic
Electromagnetic Radiation: X-Ray
42. The apparent magnitude a star would have if it were at a distance of 10 parsecs.
Quasar
matter dominated universe
Absolute Magnitude
Kirchhoff's Law
43. The high- temperatature outer layer of the sun
Convection
retrograde motion
Corona
Blackbody
44. A push or a pull
Autumnal Equinox
force
Apollo asteroids
Coronal Loop
45. The location of a supermassive black hole
Nucleus
Seyfert galaxy
Differential Rotation
CCD
46. What Ole Roemer used to measure the speed of light in a vacuum
slowest rotation
Spectroscopy
Eclipses of the Moons of Jupiter
Hipparchus
47. A method of finding a star's distance from its absolute magnitude and spectral type or color.
Neutron Star
Neutron Star
Superior planets
Spectroscopic Parallax
48. Any change in the speed or direction of an object's motion
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
acceleration
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
meteoriod
49. When the Sun is farthest north of the celestial equator (about June 22)
isotropic
Summer Solstice
Pixel
Synodic Day
50. A star that blows itself apart
Halo
self-propagating star formation
reflection star clusters
Supernova (You can be my supernova girl)