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Astrology Test Flashcards

(74 cards)

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1
Q

A massive star that has collapsed to such a small volume that its gravity prevents the escape of everything including light

A

black hole

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2
Q

a small body made of rocky and metallic pieces held together by frozen gases

A

comet

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3
Q

an apparent group of stars originally named for mythical characters; sky is divided into 88 of these

A

constellation

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4
Q

a group of stars, dust, and gases held together by gravity

A

galaxy

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5
Q

a star that falls into the main sequence category on the H-R diagram

A

main-sequence star

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6
Q

the luminous phenomenon observed when a meteoroid enters and burns up, known as a shooting star

A

meteor

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7
Q

lowest tidal range, occurring near the times of the 1st quarter and the 3rd quarter phases of the moon

A

neap tide

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8
Q

any portion of a meteoroid that reaches Earth’s surface

A

meteorite

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9
Q

a cloud of gas and/or dust in space

A

nebula

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10
Q

highest tidal range that occurs sue to the alignment of Earth, the moon and sun

A

spring tide

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11
Q

a very large, bright red star

A

supergiant

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12
Q

daily change in elevation of the ocean surface

A

tide

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13
Q

the place in the orbit of a planet where of the planet is the farthest from the sun

A

aphelion

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14
Q

the scientific study of the universe; it includes the observation and interpretation of celestial bodyies

A

astronomy

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15
Q

theory that proposes that the universe started as a single mass that exploded

A

big bang theory

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16
Q

shift in wavelength by a moving source going toward or away from an observer

A

doppler effect

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17
Q

the arrangement of electromagnetic radiation according to wavelength

A

electromagnetic spectrum

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18
Q

oval

A

elipse

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19
Q

describes the concept of an earth-centered universe

A

geocentric

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20
Q

describes the view that the sun is at the center of the solar system

A

heliocentric

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21
Q

the distance light travels in a year; about 9.5 trillion km

A

light year

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22
Q

the way in which the sun provides energy; nuclear fusion occurs when less massive nuclei combines with massive nuclei= massive nuclei

A

nuclear fusion

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23
Q

the point in the orbit of a planet where its closest to the sun

A

perihelion

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24
Q

a slow motion of Earth’s axis that traces out a cone over a period of 26,000 years

A

precession

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25
the motion of one body about another, as earth about the sun
revolution
26
the spinning of a body, such as earth about its axis
rotation
27
Universe started as something smaller than an atom(singularity) and expanded
Big bang theory
28
how old is the universe?
13.8 billion yrs
29
is the earth still expanding
HELL YEAH
30
the big bang is a misnomer because..
it was neither big nor loud
31
what did the big bang create?
stars, planets, solar systems, galaxies and overall universe
32
celestial body that orbits a sun, has a roundish shape due to its gravitational force and has cleared its orbital path
planet
33
a star and all of the planets that orbit around it
solar system
34
why was pluto declared no longer a planet
because its orbital path wasnt cleared
35
a large collection of interstellar material, solar systems and dark matter that is held together by gravity
galaxy
36
all of time, space and its contents
universe
37
COPERNICUS CAME BEFORE GALILEO
YOU GOT THIS GIRL!!!
38
Keplers first law of planetary motion
planets orbit the sun in a path called an ellipse - the earths diameter is larger at the equator than at the poles - caused by the rotation of the earth and the centrifugal force perpendicular to it
39
Keplers 2nd law of planetary motion
planets move faster when they are closest to the sun in their orbits (similar to a running track)
40
Keplers 3rd law of planetary motion
the further away a planet orbits, the longer it takes to revolve around the sun= longer seasons (also like a running track)
41
How many days does it take to complete the phases of the moon?
30 days
42
Name 8 phases of moon
1. new moon 2. waxing crescent 3. 1st quarter 4. waxing gibbous 5. full moon 6. waning gibbous 7. 3rd quarter 8. waning crescent
43
blue shift
stars move towards earth, appear blue, compressing waves and has shorter wavelengths
44
red shift
stars move away from the earth, appear red, stretches star light and has longer wavelength
45
nuclear fusion
- process that take place in stars - joining of 2 stars - making atoms bigger
46
nuclear fission
- process that we use in power plants - release of neutrons - making atoms smaller
47
similarities between fission and fusion
involves nuclei of atoms and releases a lot of energy
48
shorter wavelength
higher frequency and higher energy
49
longer wavelength
lower frequency, lower energy
50
universe--> planet smallest to biggest
planet- solar system- galaxy- universe
51
Spring Tide (vd)
- occur in full/new moons - results in maximum tidal range - caused by the earth's gravitational pull
52
Neap Tide
- occur in 1st and 3rd quarter moons - results in minimum tidal range - caused by the earth's gravitational pull
53
A wobble around the earth's axis 1/2 degrees change/18 year period due to the moon's gravity
Nutation
54
the balance between the masses of the planets as they orbit
Barycenter
55
a body of gases that gives off a tremendous amount of radiant energy in the form of light and heat
star
56
a group of stars that form a pattern in the sky
constellation
57
distance light can travel in a year
lightyear
58
lightyear is
9.5 trillion km
59
small part of the electromagnetic spectrum
visible light
60
separates light into different colors abundant elements in stars
sprectroscope
61
a star that blows up
supernova
62
a cloud of gas
neubla
63
bright center of stars with arms spiraling out
spiral
64
rock or icy fragment moving through space
meteoroid
65
light made by meteoroid as it passes through earth's atmosphere
meteor
66
a meteor that lands on earth
meteorite
67
various shapes of the moon lighted by reflected light
phases
68
when the size of the visible portion of the moon is increasing
waxing
69
when the size of the visible moon is decreasing
waning
70
no lighted area of the moon is visible from the earth
new moon
71
entire half of the side of the moon facing earth is lit
full moon
72
how many minutes does it take for the sun's light to reach earth?
8 min
73
collapsed core of a supernova
neutron star
74
solid, rock like mass, irregular in shape
asteroid

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