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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. The layer of the sun just above the photosphere
Parallax
Chromosphere
Halo
Celestial Sphere
2. The 'edge' of the universe. Light beyond this has not reached us yet.
Kirchhoff's Law
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.
MOONS: most geologically active
partile horizon
3. A change in the appearance of the sun at the edge of the solar disk
Largest diameter
Limb darkening
Thickest atmosphere
HII Region
4. The most mass a white dwarf can have before collapsing to a neutron star
Cassegrain Focus
Chandrasekhar Limit
Electromagnetic Radiation: Visible Light
Cepheid variables
5. Neptune or uranus
Instability strip
Coldest surface
neutrino
Blackbody
6. The high- temperatature outer layer of the sun
greatest elongation
Bulge
direct motion
Corona
7. A small spherical dark nebula
Earth resurfaces itself due to erosion and plate tectonics - while the moon has neither.
Bok Globule
Primary Mirror
Shepherd satellite
8. In a CLOSED UNIVERSE - the curvature of space-time is _________. Parallel beams will converge/diverge/remain parallel (circle one). The density parameter - Ω0 - is _____.
greatest elongation
Nucleus
Negative - Diverge - Less than 1
Positive - Converge - Greater than 1
9. In an OPEN UNIVERSE - the curvature of space-time is ____ - Parallel beams will converge/diverge/remain parallel (circle one). The density parameter - Ω0 - is____.
great red spot
Negative - Diverge - Less than 1
retrograde motion
Electromagnetic Radiation: Radio
10. When material is heated and moves taking the heat energy with it
Particle Horizon
Kuiper belt
Convection
Astronomical Unit
11. A high-pressure bulge in Neptune's southern hemisphere
great dark spots
The Local Group
Void
mass
12. A star that blows itself apart
semimajor axis
Supernova (You can be my supernova girl)
shape and color of SPIRAL galaxies
belt
13. Poitns of gravitational stability in the orbit of a planet
greehouse effects
synchronous rotation
epicycle
Lagrangian Razor
14. Light scattered through the atmosphere that degrades astronomical images
Light Pollution
belt
great dark spots
regolith
15. A word meaning 'the same everywhere throughout.'
homogeneous
Granules
Prominence
fusion crust
16. How did Earth come to have an oxygen rich atmosphere?
tectonics of Earth
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.
Electromagnetic Radiation: Gamma Ray
acceleration
17. Moon in less than the angular diameter of the Sun.
Globular Cluster
difference between maria and highlands of the moon.
Annular Eclipse
Globular Cluster
18. A term referring to Earth-like planets
terrestrial planet
MOONS: most geologically active
Photometry
Eyepiece Lens
19. 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.
Ganymede (Jupiter)
tectonics of Mars
Geocentric
Blackbody
20. Hot cells of gas that rise and fall in the hotosphere
Cosmic Microwave Background (CMB)
The Big Bang Theory
Granules
Vernal Equinox
21. The era when the ratio of matter to energy greatly favored matter. (verses radiation dominated universe where it was opaque. Matter is now dominated by gravity not photons)
cosmic singularity
Geocentric
matter dominated universe
Dwarf planets
22. The ratio of the actual density of the universe to the critical density. (actual density divided by the critical density
Precession
density parameter
meteor
Sunspots
23. 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.
critical density
Population 1 vs Population 2 stars
gravity
cosmic singularity
24. Material that shoots rapidly out into space. Flares cause Auroras
Void
Flare
mare basalt
interstellar dust
25. The light produced when particles from the sun collide with atmospheric molecules
Wein's Law
Make up of the jovian planets
aurora
supernova
26. The lens in a telescope used to determine the magnification
Sidereal Day
Eyepiece Lens
interstellar dust
Coldest surface
27. A measure of the ability of a telescope to see fine detail
Milky way Galaxy
Thermonuclear Fusion
Resolving Power
Yes - frozen at the poles- remains protected from the suns rays
28. A spectrum of light with energy at only a few wavelengths.
Neutron Star
Emission Spectrum
great dark spots
Electromagnetic Radiation: Gamma Ray
29. An element of a highly efficient - two-dimensional electronic light detector
Trojan asteroids
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.
Pixel
plate tectonics
30. A streak of light in the atmosphere
least dense
Parsec
Spectroscopic Parallax
meteor
31. 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.
MOONS: largest size
Grand design spirals
Cosmological Principle
Flocculent spirals
32. Venus (retrograde)
most moons
widmanstatten pattern
Open Cluster
slowest rotation
33. A measure of how an object resists accelerating when acted upon by a force. It is proportional the amount of matter in an object
Summer Solstice
Bulge
Olber's paradox
mass
34. The process that powers the sun and hydrogen bombs
Instability strip
Precession
Thermonuclear Fusion
Oort cloud
35. The class of all objects having high energy radiation coming from their nuclei. Active Galactic Nucleus- Blazars - Quasars - Radio and Emit synchrotron radiation
Oort cloud
Maria
AGN
partile horizon
36. A location on an H-are Diagram where evolving stars pulsate
Instability strip
Kirchhoff's Law
Kuiper belt
Negative - Diverge - Less than 1
37. The mass of an object divided by its volume
density
matter dominated universe
Plank's Law
Largest diameter
38. The shadow area behind the Earth or Moon where the Sun is completely obscured.
Umbra
Geocentric
Electromagnetic Radiation
Light Gathering Power
39. Infinitely long -> 10 cm
Sb spiral galaxy
Black Hole
Electromagnetic Radiation: Radio
Nova
40. 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
Sc spiral galaxy
Milky way Galaxy
Electromagnetic Radiation: Gamma Ray
slowest rotation
41. 1μm 100 nm
Precession
Cosmic Microwave Background
Electromagnetic Radiation: Visible Light
open star clusters
42. A bright area of higher temperature that often proceeds the formation of sunspots.
Plague
Light Pollution
difference between maria and highlands of the moon.
Seeing
43. When one side of a body always faces the planet it revolves around
synchronous rotation
Flat - Remain Parallel - Exactly 1
E=mc2
Drake equation
44. A toroidal or donut-shaped collection of material attracted to a central body like a star or black hole. Dust around an object
Dark Matter
Cosmological Principle
Void
accretion disk
45. Atmosphere blocks high energy wavelengths - atmosphere blurs optical radiation - atmosphere absorbs some radiation at all wavelengths even when it gets through.
High Velocity Stars
Annular Eclipse
3 reasons we orbit satellites to observe universe
Reflector
46. Venus
Parsec
hottest surface
quasar
bulge
47. The shadow behind the Earth or Moon where the Sun is partially obscured.
Penumbra
Trojan asteroids
Chromosphere
evidence of water on mars
48. The seasonal shifting of a nearby star's position relative to more distant objects.
Degeneracy
resonance
Big Bang
Parallax
49. Dark areas on the sun that are cooler than the surrounding photosphere
density parameter
opposition
Pixel
Sunspots
50. The location of a supermassive black hole
The Local Group
Electromagnetic Radiation: Gamma Ray
hottest surface
Nucleus