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Earth Science Chapter 23 Flashcards | StudBud
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Earth Science Chapter 23
Earth Science Chapter 23
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1
____ are pieces of rocky and metallic materials held together by frozen gases
None of the above
asteroids
meteors
comets
2
Which planet has the lowest surface temps and an atmosphere comprised mostly of nitrogen?
Jupiter
Neptune
Uranus
Saturn
3
According to scientists, the solar system formed from:
colliding nebulae
colliding planetisimals
a rotating disk of dust and gases
rotating stars
4
Planets were originally formed when bits of matter collided and clumped together to form ___
aliens
Nubulae
Planetismals
superplanets
5
what are the Terrestrial planets?
Jupiter, Saturn, Uranus, Neptune
Mercury, Venus, Uranus, and Neptune
Mercury, Venus, Earth and Mars
Mercury, Venus, Earth and Saturn
6
When viewed from Earth, Mars appears to change colors. This most likely happens because:
Gases in dense Martian atmosphere are constantly changing
weeks-long dust storms cause the atmosphere to change colors
Volcanic activity produces thick gas clouds
active volcanoes on Mars surface randomly flood the surface
7
Briefly describe the Nebular Theory:
None of the Above
suggests the solar system formed from rotating dust
An asteroid formed the solar system
suggests that a big explosion formed the solar system
8
Scientists have been able to estimate the age of our solar system by dating:
meteors
meteorites
comets
asteroids
9
One planet, ___, cannot be classified as either a terrestrial or Jovian planet.
Earth
Pluto
Mars
Planetismo
10
The Kuiper Belt is the region beyond Neptune containing:
comets with short orbit periods
A dense collection of meteoroids
Comets with unusually large nuclei
meteors smaller than 1 km across
11
Pluto's unusual orbit causes it to occasionally travel inside the orbit of ____
Saturn
Neptune
Uranus
Venus
12
Which of the following is true about comets?
The orbits of comets do not take them past Jovian planets
The Oort cloud of comets is found between Neptune and Pluto
All comets have long tails made of vaporizing gases
Comets are held together by frozen gases
13
Which is 1 difference between the way terrestrial and Jovian planets were formed?
The Jovian planets formed only from bits of ice
Terrestrial planets formed from metals and silicate minerals
The terrestrial planets formed only from bits of ice
Jovian planets formed only from metals and silicate minerals
14
____ satellite system resembles a miniature solar system with at least 28 moons.
Jupiter's
Neptune's
Mars'
Earth's
15
One reason that life as we know it is unlikely to exist on Venus is because:
there is no atmosphere
the surface temperature is too low
the surface has too much ice covering it
the surface temperature is too high
16
Because of its many similarities to Earth, ___ is referred to as "Earth's twin".
Venus
Mars
Neptune
Mercury
17
The period of rotation for any of the Jovian planets is ____ than Earth's period of rotation.
longer
erraticer
shorter
crazier
18
Which of the following is NOT considered a terrestrial planet?
Mercury
Mars
Neptune
Venus
19
The total mass of all asteroids is estimated to be only 1/1000 that of ______
Earth
Mars
Pluto
Mercury
20
Which of the following is NOT a source of meteoroids:
rocky chunks from neighboring solar systems
material from the asteroid belt
leftover interplanetary debris
the solid remains of comets
21
Which of the Jovian planets have rings?
Saturn, Jupiter, Uranus, and Neptune
Only Saturn and Jupiter
only Saturn and Neptune
Only Saturn, Jupiter, and Uranus
22
Identify Jupiter's largest moons left to right:
Titan, Tritan, Io, Europa
Io, Titan, Trian, Europa
Io, Europa, Ganymede, Callisto
Tritan, Titan, Callisto, Io
23
A meteoroid that reaches Earth's surface is called a(n)
comet
asteroid
Meteorite
24
What is the mass of Jupiter?
2 x mass of all terrestrial planets
2.5 x the mass of all planets and their moons
1/2 the mass of all Jovian planets
2.5 x mass of Earth
25
What are all of Saturn's rings made of?
Carbon Dioxide
Gases only
Oxygen
Moonlets of ice and rock
26
Which of the following is true about asteroids:
Asteroids never actually collide with planetary bodies
Recent impact craters on the moon were caused by asteroids
Asteroids rarely pass close to Earth
Most asteroids are no larger than a grain of sand
27
The largest of the terrestrial planets:
Jupiter
Earth
Uranus
Mars
28
Most asteroids lie between the orbits of:
Mars and Jupiter
Mars and Earth
Jupiter and Neptune
Jupiter and Saturn
29
The orbits of most ___ lie between Mars and Jupiter
satellites
asteroids
comets
ISS
30
The Jovian planets are
Mars, Mercury, Earth, Venus
Earth, Venus, Mars, Saturn
Jupiter, Saturn, Uranus, Mercury
Jupiter, Saturn, Uranus, Neptune
31
Some scientists believe that on ____, a thick water-laden atmosphere once surrounded the planet
Mars
Jupiter
Neptune
Venus
32
How does the atmospheres of Terrestrial and Jovian Planets differ?
The sun cannot penetrate Jovian atmospheres
Jovian planets have a thinner atmosphere than terrestrial
Terrestrial planets have thinner atmosphere than Jovian
The Jovian planets have atmosphere with a water cycle
33
How does the diameter of the terrestrial and Jovian planets compare?
All but 1 terrestrial planet have diameters = Jovian planets
The diameters of the Jovian planets are much larger
All but 1 of the Jovian planets have diameters = terrestrial
The diameters of the terrestrial planets are much larger
34
Comets with long orbital periods form a spherical shell around the solar system called the ____
Oort Cloud
Kuiper Belt
Nebula
Eccentric revolution
35
What is a meteor?
A type of rock orbiting earth
small body of matter from space that enters theatmosphere
A type of rock orbiting the sun
A body of matter being pulled into earth
36
Which planet has an axis of rotation parallel with the plane of its orbit?
Neptune
Saturn
Jupiter
Uranus
37
The densities of Jovian planets are:
more than 5.5 x the density of water
not more than about 1.5 x the density of water
not more than about .5 x the density of water
from 3.9 to 5.5 x the density of water
38
The fact that Mercury has no atmosphere is evidence that it:
reflects almost all of the sunlight that strikes it
is composed almost entirely of gases
reflects a small percentage of the sunlight that strikes it
Is much farther from the sun than it appears
39
Formation of the solar sys. from a rotating disk of dust and gases is described by the _ theory
circling
nebular
None of the above
rotating
40
All comets orbit the sun?
False
True
