SUBJECTS
|
BROWSE
|
CAREER CENTER
|
POPULAR
|
JOIN
|
LOGIN
Business Skills
|
Soft Skills
|
Basic Literacy
|
Certifications
About
|
Help
|
Privacy
|
Terms
|
Email
Search
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. 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.
solar nebula
Turn off Point
Void
Eclipses of the Moons of Jupiter
2. 1 mm 1μm
Electromagnetic Radiation: Infrared
radiation dominated universe
Absorption Spectrum
Positive - Converge - Greater than 1
3. A large - irregularly shaped rocky object orbiting the sun mostly between mars and jupiter. Left-over planetesimals
Chandrasekhar Limit
Hubble constant
HII Region
asteroid
4. When massive objects bend space and time enough to create multiple images of an object located behind them
3 reasons we orbit satellites to observe universe
Interstellar Extinction
Gravitational Lens
Continuous Spectrum
5. The rotation period of the Earth measured relative to the stars.
fastest rotation
Sidereal Day
radiation dominated universe
Precession
6. A change in the wavelength of light caused by a motion between the observer and light (or wave) source (blue shift if getting closer - red shift if moving away)
Light: travels like a wave - detected like a particle
Maria
MOONS: thickest atmosphere
Doppler Shift
7. A star that is burning hydrogen to helium in a shell surrounding it's core
Red Giant Branch Star
If it is in a denser medium - such as glass - it will move slower
Kuiper belt
Ground State
8. 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.
difference between maria and highlands of the moon.
Electromagnetic Radiation: Visible Light
Light-Year
Absolute Magnitude
9. If stars have diff orbital periods - than any arms formed by stars will wind into a tight spiral pattern (billion yrs or so)
Red Giant
Neutron Star
greehouse effects
rotation curve=winding dilemma?
10. The layer of the sun just above the photosphere
We don't know. It might be but does not have to be.
anorthosite
Chromosphere
belt
11. Mercury and venus
fewest moons
Grand design spirals
Cosmic Microwave Background
homogeneous
12. Largest moon in solar system - two differenet types of terrain - darker terrain is older - NOT ACTIVE SURFACE
Resolving Power
HII Region
Shepherd satellite
Ganymede (Jupiter)
13. A cloud of ionized hydrogen. Formed when young stars heat the surrounding gas
radio lobe
HII Region
Oort Cloud
Red Giant Branch Star
14. In an OPEN UNIVERSE - the curvature of space-time is ____ - Parallel beams will converge/diverge/remain parallel (circle one). The density parameter - Ω0 - is____.
chondrite
radiation pressure
Negative - Diverge - Less than 1
Autumnal Equinox
15. The fate of the universe if it is closed. The universe expanding as much as possible and then retracting
Titus-Bode Law
Big Crunch
Triple Alpha rocess
Proton-proton chain
16. 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.
Resolving Power
Parallax
Population 1 vs Population 2 stars
Dark Nebula
17. Sudden blasts of gamma radiation from a very distant galaxy caused possibly by a supernova explosion.
Sb spiral galaxy
Refractor
asteroid
Gamma ray bursts
18. VENUS
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
partile horizon
self-propagating star formation
19. A word meaning 'the same in all directions.'
isotropic
Cosmic Microwave Background
Flocculent spirals
fewest moons
20. The fusion process that turns three helium nuclei into a carbon nucleus
Triple Alpha rocess
Metals
mass
Dark Nebula
21. Elliptical orbits that come inside orbit of the Earth.
Limb darkening
Ionization
The Big Bang Theory resolves Olber's Paradox
Apollo asteroids
22. The powdered stone fragments that make up the lunar 'soil'
Steady State Theory (Leads to Olber's Paradox)
Neutron Star
Rich Cluster
regolith
23. A force exerted by reflecting sunlight
partile horizon
Proton-proton chain
Sidereal Day
radiation pressure
24. A massive variable star used to find distances to the galaxies or clusters that contain them.
AGN
anorthosite
accretion disk
Cepheid Variable
25. Where is the center of the expansion
CCD
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.
Celestial Sphere
Nowhere visible to us. If there are higher dimension then the center would be visible to someone who lives in one. If there are no higher dimensions then the center does not exist.
26. A technique using computer-controlled mirrors to sharpen images distorted by the atmosphere
Active Optics
Hipparchus
Color Index
MOONS: thickest atmosphere
27. A younger cluster of stars - found in the galaxy disk
Open Cluster
Black Hole
Self-Propogating Star Formation
nucleus
28. The high- temperatature outer layer of the sun
asteroid
Corona
epicycle
Parallax
29. Formed rapidly - collapsed slower into disk shape - star birth rate is low but lasts longer and ongoing - contain higher mass blue stars.
shape and color of SPIRAL galaxies
Corona
mapping the structure of Milky Way disk
Coldest surface
30. The number of protons in an atom.
quasar
asteroid
Atomic Number
Ole Roemer
31. The light produced when particles from the sun collide with atmospheric molecules
Terrestrial Planets
Resolving Power
Spectroscopy
aurora
32. The amount of density needed to stop the universe from expanding and to begin the big crunch represented by Pc
mass
Gamma ray bursts
critical density
Positive - Converge - Greater than 1
33. The mirror that determines the focus configuration of a reflector
Earth resurfaces itself due to erosion and plate tectonics - while the moon has neither.
jovian
Secondary Mirror
OB Associations
34. What do we think the actual fate of the universe will be and why do we think this?
Geocentric
High Velocity Stars
coma
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.
35. The sinking of denser elements to the center of a young molten planet
Seeing
chemical differentiation
belt
force
36. A planet that is farther from the sun than the Earth is
meteor
Superior planets
cosmological principle
Celestial Equator
37. A small chunk of rock in space
meteoriod
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.
Geocentric
fewest moons
38. The 'edge' of the universe. Light beyond this has not reached us yet.
mapping the structure of Milky Way disk
partile horizon
Light Curve
Europa (Jupiters moon)
39. A large - irregularly shaped rocky object orbiting the sun mostly between mars and jupiter. Left-over planetesimals
roche limit
asteroid
Doppler Shift
CCD
40. The elementary building blocks from which protons and neutrons are formed.
Rich vs poor clusters
Halo
quarks
Synodic Day
41. The most mass a white dwarf can have before collapsing to a neutron star
Chandrasekhar Limit
Flat - Flat
dark matter
terrestrial planet
42. A star that blows itself apart
great red spot
Supernova (You can be my supernova girl)
shape and color of ELLIPTICAL galaxies
AGN
43. Is space infinitely large?
Warning
: Invalid argument supplied for foreach() in
/var/www/html/basicversity.com/show_quiz.php
on line
183
44. The first rock-sized bodies that formed in the solar nebula from dust grains
Kuiper belt
Ionization
Continuous Spectrum
chondrite
45. The cosmological principle is the assumption that the universe is isotropic and homogeneous.The Big Bang assumes it to be a correct principle so that what we observe is exactly like What is too far away to be observed.
Cosmological Principle
Electromagnetic Radiation: Ultraviolet Light
Titus-Bode Law
plate tectonics
46. The opaque universe that existed for 300000 years after the Big Bang. (photons outnumbered nuclei by 1 billion to one - so less light)
Winter Solstice
Triple Alpha rocess
radiation dominated universe
Continuous Spectrum
47. The location in the Milky Way where stars orbit like a solid wheel
Bok Globule
Zenith
Bulge
If it is in a denser medium - such as glass - it will move slower
48. Sa - Sb galaxies where two magnificent arms wind their way from nucleus out in a symmetrical manner.
deferent
Kirkwood gaps
Penumbra
Grand design spirals
49. A subatomic particle with a negative charge. It creates light.
most moons
Astronomical Unit
Absolute Magnitude
Electron
50. Disk dust grains are made of all the elements that are not in gaseous form in space which blocks starlight and causes interstellar extinction
Synchrotron Rotation
interstellar dust
Coronal Loop
cosmic fireball