Ast-Com-Met Flashcards
(160 cards)
0
Q
merely reflect sunlight as they revolve around the sun
A
planets
1
Q
dust and left behind ice whenever Earth intersects with an area where a comet has passed through
A
Meteor Showers
2
Q
leftovers of the materials that formed the planets
A
space debris
3
Q
small bodies (usually rocky and metallic) likened to flying mountains
A
asteroids
4
Q
fragments of rocky materials with similar composition of the terrestrial planets
A
asteroids
5
Q
smallest asteroids are assumed to be no larger than ———–
A
grains of sand
6
Q
some asteroids have very ——— orbits and travel very near the —
A
eccentric, sun
7
Q
percentage of the total mass of asteroids compared with the Moon’s mass
A
15
8
Q
T or F: If an extinction event will occur, all micro species will die like the Big Bang
A
F - macro species
9
Q
T or F: A planet between Mars and Jupiter collapsed because of the strong gravitational pull of Jupiter
A
T
10
Q
largest asteroid
A
Ceres
11
Q
first asteroid discovered in 1801
A
Ceres
12
Q
completes a solar orbit every 14 Earth years
A
Hidalgo
13
Q
Subsequently found after Hidalgo
A
Pallas, Juno, Vesta
14
Q
fragment of a larger body torn apart by a collision
A
951 Gaspra
15
Q
first asteroid to be photographed close up in 1991 by Galileo probe
A
951 Gaspra
16
Q
moon of Ida
A
Dactyl
17
Q
came gliding past Earth, missing our planet by 27 000 km on Feb 2013
A
2012DA14
18
Q
2088 collisional asteroid 35 miles long
A
Ida
19
Q
Mars’ tiny moon captured from the main asteroid belt
A
Deimos
20
Q
7075 of them are found already with 500-1 000 at least 1 km in diameter
A
Near Earth asteroids
21
Q
open areas in the main asteroid belt that are devoid of asteroids
A
Kirkwood gaps
22
Q
can ignite trees and vegetation
A
Glowing asteroids
23
Q
Occurrences are very rare but the best known was the Tunguska Event in 1908
A
Glowing asteroid
24
explosive force is estimated to have been 1 000 times that of the Hiroshima bomb
Tunguska Event of 1908
25
asteroids that share an orbit with a large planet or moon
Trojans
26
Trojan asteroids' location
along Jupiter's orbit, 60° ahead of and behind jupiter
27
Trojan asteroids' reason for no collisions
always either behind or ahead of the planet
28
most significant Trojans
Jupiter Trojans
29
an asteroid can be called a ---------------
planetoid, micro planet, minor planet
30
T or F: Weathering and erosion on Earth have destroyed most impact craters left by asteroids.
T
31
types of asteroids
siliceous
carbonaceous
metallic
32
stony composition
siliceous
33
most common variety, forming 75% of known asteroids
carbonaceous
34
asteroids of partially known composition
metallic
35
found in the outer asteroid belt and beyond
D-type
36
The ----- model suggests that D-types may have originated in the ------------------
Nice, Küįper Belt
37
naming asteroids
patterned after:
Latin names
person who have made contributions to science
names of gods and goddesses
38
have orbital periods of 3-6 years
asteroid belt
39
Asteroid belt is between -------
Mars and Jupiter
40
T or F: Scientists and engineers have raised the prospect of asteroid mining.
T
41
orbits approach but do not cross Earth
Amor belt
42
orbits cross Earth
Apollo belt
43
have wider orbits than earth
Apollo belt
44
orbits cross Earth and spend most of their time inside earth's orbit
Aten belt
45
Earth-approaching asteroids that cross Mars' orbit
Amor
46
NEAs that are considered as potentially hazardous asteroids
Apollo
47
LiNEAR
Lincoln Near Earth Asteroid Research Program
48
NASA
National Aeronautics and Space Administration
49
modular space station whose first component was launched in 1998
ISS
50
T or F: An asteroid could have a moon
T
51
T or F: An asteroid has its own light
F
52
T or F: An asteroid is smaller than a meteoroid
F
53
T or F: An asteroid can get too close to Earth
T
54
T or F: If an asteroid collides with Earth, hundreds of species will die out
T
55
T or F: Asteroids can be found only in the Asteroid belt
F
56
T or F: Asteroids revolve around the Sun
T
57
What do asteroids and comets have in common?
Most are unchanged since their formation in the solar nebula
58
most interesting and unpredictable bodies in the solar system
comets
59
Comets are often described as ----------
'dirty snowballs' and balls of ice
60
Comets are made up of ------
ice made from frozen gases, water and dust
61
T or F: Comets cannot survive more than a few hundred close orbits of the sun
T
62
The list of comets discovered have reached ----- as of 2011
4 165
63
comets that have a period of more than 200 years or even millions of years
non-periodic
64
orbits around the sun that are shorter than 200 years
short-period
65
period of more than 200 years travel farther from the sun
long-period
66
the first person to determine the reappearance of a comet by using Newton's mathematical model for comets
Edmond Halley
67
completes elongated orbit in 76 years
Halley
68
Reappearance year of Halley
2062
69
sun grazing comet discovered by Vitaly Nevsky in 2012
ISON
70
long-period comet discovered by Terry Lovejoy
Lovejoy
71
collided with Jupiter and broke up into pieces in July 1994
Shoemaker Levy 9
72
estimated to have 12 000 gigatons of TNT
Shoemaker Levy 9
73
brightest comet in the last 1 000 years
Ikeya Seki 1965
74
comets visible in the Philippines
```
Kohoutek
West
Hyakutake
Hale-Bopp
McNaught
Holmes
```
75
last comet that made appearance in 2010 and has a short orbital period of 6.4 year
Hartley-2
76
small, icy bodies that have highly eccentric orbits and can be found in the Oort Cloud or Küįper belt
comets
77
shape of most comets' orbits
long, narrow ellipses
78
comets with short orbital periods are thought to orbit beyond --------- in --------------
Neptune, Küįper belt
79
comets with long orbital periods appear to be distributed in all directions from the sun
Oort cloud
80
three parts of a comet
nucleus, coma and tail
81
glowing head of a comet
coma
82
released dust and has form a huge, extremely unstable atmosphere around a comet
coma
83
types of tails
ion and dust
84
tail of a comet points ------------ the sun
away from
85
formed by the force exerted on the coma
tail
86
two forces that contribute to the formation of a comet's tail
solar wind
| solar radiation
87
what happens to a comet as it gets close to the sun?
it produces a coma and two tails that are swept away from the sun
88
Most comets are believed to orbit the Sun -------- the orbit of Pluto
beyond
89
naming of comets
Patterned after:
the year of their appearance
the person who discovered them
90
T or F: Comets last within the solar system forever
F - do not last
91
T or F: Scientists believe that the chances of comet collisions with Earth are very remote.
T
92
T or F: Comets typically gain material with every pass by the Sun.
F
93
small solid particle that travels through space
meteoroids
94
fragments of rocky material with similar composition as the terrestrial planets
meteoroids
95
very tiny meteoroids
micrometeoroids or cosmic dust
96
T or F: Meteoroids do not emit any light of their own.
T
97
piece of space rock which occasionally hits Earth usually without causing serious damage
meteoroids
98
origin of meteoroids
interplanetary debris
Moon
comet trails
material from the asteroid belt
99
one of the largest meteorites ever recovered from the Philippines
Bondoc meteorite
100
Identified Bondoc as a meteorite
Harvey Ninninger
101
super bolide caused by a NEA that entered Earth's atmosphere over Russia in 2013
Chelyabinsk
102
The Canyon Diablo meteorites include the many fragments of the asteroid that created the -------------------
Baringer Crater
103
-- tons of iron fragments have been found in the immediate area
30
104
Once a meteoroid enters the earth's atmosphere, it heats up due to -------- with the atmosphere and produces a ---- of debris that glows because of ----
friction, tail, heat
105
interplanetary material that burns up and becomes a glowing streak of light in our atmosphere
meteor
106
glowing tail of a meteoroid
meteor
107
'bulalakaw', shooting stars, falling stars
meteor
108
flaming meteoroid
meteor
109
The Orionids
meteor
110
If a space rock is stuck in the earth's atmosphere it is considered a ------
meteor
111
flash of light produced when a meteoroid passes Earth's atmosphere
meteor
112
meteor that appear to glow brighter than planets
fireballs
113
formed when fireballs explode
bolides
114
interplanetary material that enters the Earth's atmosphere and collides with the ground rather than burning up
meteorite
115
manages to reach Earth's surface as a solid object
meteorite
116
small chunk of space rock that hits earth
meteorite
117
piece of solar system debris that passes through Earth's atmosphere and strikes the ground
meteorite
118
rocky leftover planetesimals that hit Earth's surface
meteorites
119
large-irregular shaped object, potentially dangerous to Earth
asteroid
120
result when Earth intersects a cometary orbit
meteor showers
121
a large, rocky body orbiting the Sun
| the body was surrounded by other similar rocky bodies that travelled in the same orbit
asteroid
122
meteor showers are composed of -------------
dust and other debris from comets
123
In what layer of the atmosphere do meteoroids get vaporized?
mesosphere
124
Compare meteoroids and asteroids
They are alike except for their size — meteoroids are smaller than asteroids
125
types of meteorites
iron
stony
mesosiderites (iron-stony)
126
meteorites that contain silicate minerals
| subdivided into chondrites and anchondrites
stony
127
front part of the head of a comet
impact front
128
T or F: Close to the sun, the tail of a comet reach its maximum length.
T
129
contains similar quantities of iron, nickel and silicates
mesosiderites
130
meteorites that contain a high percentage of iron and nickel compounds and created in the rupture of asteroids
iron
131
frozen water, methane, carbon dioxide, ammonia, rock and dust
nucleus
132
the trail of suspended gases generates a low intensity, luminous region with a bluish color
the gas molecules lose an electron and therefore have an electric charge
ion tail
133
suspended dust particles trail behind the comet, reflecting sunlight and making the luminous tail visible
dust tail
134
object in space that leaves a bright stream of gas and dust
comet
135
straight bright light left by a large burning meteor fireball
also known as the dust trail of meteors
afterglow
136
luminous phenomenon observed when a small solid particle enter Earth's atmosphere and burns up
meteor
137
remains of a meteoroid found on Earth
meteorite
138
Which of the following can be touched:
a. meteorite
b. meteoroid
c. meteor
d. meteozoid
a.
139
features on Earth offer clear evidence that comets and asteroids have struck its surface
rayed craters
140
Most meteor showers are associated with the orbits of -----
comets
141
T or F: A meteor is visible because of its high temperature as it glows in Earth's atmosphere
T
142
T or F: Comets look fuzzy while asteroids appear as moving points of light
T
143
T or F: Comets have higher densities than asteroids
F
144
T or F: The average distance of a comet from the sun is far greater than those of asteroids
T
145
T or F: A comet's orbit tend to be more eccentric than those of asteroids.
T
146
T or F: Meteor showers are named after the background constellation with which they are observed
T
147
T or F: Comets are made of frozen ice and rock while meteors are made of rock.
T
148
T or F: Comets rarely enter a planet's atmosphere.
T
149
T or F: Most comets are found outside the solar system and meteors are found within
T
150
Meteoroids usually come from --------- or -----------
comets, asteroids
151
small pieces of rock that travel through space with no predictable or recognizable path
meteoroids
152
A comet's ---- can measure 62 000 miles or more in diameter
head
153
As a comet moves away from the sun, it returns to ---- -------
cold storage
154
T or F: Only a tiny portion of the Oort cloud comets pass into the inner solar system
T
155
largest discovered fragment of the 150-foot meteor that created Meteor Crater
Holsinger Meteorite
156
comets that leave their original orbits and approach the Sun generally settle into new trajectories
periodic comets
157
What do comets have in common with deep fried ice cream?
They're both crispy on the outside, with soft, cold interiors.
158
T or F: Asteroids are similar to comets because they have visible comas (fuzzy outline and tail) like comets do.
F - similar but do not have visible comas
159
name of the maker of this reviewer
Dana Praise C. Guerrero
