CSET Multiple Subjects: Subtest 2 –Science
Exam Practice Questions and Correct
Answers Already Graded A+|Assured
Success
Eclipses - CORRECT ANSWER--Ancient astronomers found that eclipses
occurred periodically and learned to predict them accurately
-Lunar and solar
Lunar eclipse - CORRECT ANSWER--Darkens the moon as the earth passes
between it and the sun, casting a shadow on the moon
-An eclipse of the moon may be seen from anywhere the moon is visible, about
half of the earth
,Solar eclipse - CORRECT ANSWER--Takes place when the moon passes
between the earth and the sun, with the moon blocking the sunlight for about
two minutes
-A total eclipse of the sun may be seen only from a small zone on the earth
Planets - CORRECT ANSWER--Divided into two main types: large, low-density
gas giants and smaller, rocky terrestrials
-There are at least 341 identified planets, 8 of which are in the Solar System
Solar System - CORRECT ANSWER--4 terrestrials: Mercury, Venus, Mars, Earth
-4 gas giants: Jupiter, Saturn, Uranus, Neptune
-At least 5 dwarf planets: Ceres, Pluto, Makemake, Haumea, Eris
Venus - CORRECT ANSWER--Takes approx. seven and a half earth months for
Venus to revolve around the sun
-Takes approx. eight earth months to rotate on its axis
-Therefore, a day on Venus is longer than a year
-Similar in size to Earth
-One of the few planets that rotate from east to west
,-Similar in size to Earth
-Atmosphere is primarily composed of carbon dioxide
-This thick atmosphere traps heat due to the greenhouse effect
-The Magellan probe reached Venus in 1990 and provided detailed images of the
planet
Comet - CORRECT ANSWER--A small Solar System body that orbits the Sun
-When close enough to the sun, exhibits a visible coma (atmosphere) or a tail,
both primarily from the effects of solar radiation upon the comet's nucleus
-Comet nuclei are loose collections of ice, dust, and small rocky particles,
measuring a few kilometers or tens of kilometers across
-Have a variety of different orbital periods, ranging from a few years, to hundreds
of thousands of years, while some are believed to pass through the inner Solar
System only once before being thrown out into interstellar space
Short-period comets - CORRECT ANSWER-Thought to originate in the Kuiper
Belt, or associated scattered discs, which lie beyond the orbit of Neptune
Long-period comets - CORRECT ANSWER--Believed to originate at a much
greater distance from the Sun, in a cloud (the Oort cloud) consisting of debris left
over from the condensation of solar nebula
, -Comets are thrown from the outer planets or nearby stars, or as a result of
collisions
Asteroids - CORRECT ANSWER--Sometimes called minor planets or planetoids
-Bodies—primarily of the inner Solar System—that are smaller than planets but
larger than meteoroids, excluding comets
-The distinction between asteroids and comets is made by visual appearance;
when discovered, comets show a perceptible coma while asteroids do not
Earth - CORRECT ANSWER--Travels in an orbit that is slightly elliptical (oval),
and so the distance from the sun ranges from 91.5 to 94.5 million miles
-Its daily rotation deforms the earth to a flattened spheroid, with a polar radius
slightly less than the equatorial radius
Locations of the surface are described by a grid of latitude and longitude lines
Gravity and inertia - CORRECT ANSWER--Both gravity and inertia work
together to keep planets in orbit around the sun
-Inertia makes a planet travel in a straight line
-By definition, inertia is the tendency of a moving object to stay in a straight line
or a stationary object to remain in place
-However, the power of the sun's gravity pulls the planets toward the sun
Exam Practice Questions and Correct
Answers Already Graded A+|Assured
Success
Eclipses - CORRECT ANSWER--Ancient astronomers found that eclipses
occurred periodically and learned to predict them accurately
-Lunar and solar
Lunar eclipse - CORRECT ANSWER--Darkens the moon as the earth passes
between it and the sun, casting a shadow on the moon
-An eclipse of the moon may be seen from anywhere the moon is visible, about
half of the earth
,Solar eclipse - CORRECT ANSWER--Takes place when the moon passes
between the earth and the sun, with the moon blocking the sunlight for about
two minutes
-A total eclipse of the sun may be seen only from a small zone on the earth
Planets - CORRECT ANSWER--Divided into two main types: large, low-density
gas giants and smaller, rocky terrestrials
-There are at least 341 identified planets, 8 of which are in the Solar System
Solar System - CORRECT ANSWER--4 terrestrials: Mercury, Venus, Mars, Earth
-4 gas giants: Jupiter, Saturn, Uranus, Neptune
-At least 5 dwarf planets: Ceres, Pluto, Makemake, Haumea, Eris
Venus - CORRECT ANSWER--Takes approx. seven and a half earth months for
Venus to revolve around the sun
-Takes approx. eight earth months to rotate on its axis
-Therefore, a day on Venus is longer than a year
-Similar in size to Earth
-One of the few planets that rotate from east to west
,-Similar in size to Earth
-Atmosphere is primarily composed of carbon dioxide
-This thick atmosphere traps heat due to the greenhouse effect
-The Magellan probe reached Venus in 1990 and provided detailed images of the
planet
Comet - CORRECT ANSWER--A small Solar System body that orbits the Sun
-When close enough to the sun, exhibits a visible coma (atmosphere) or a tail,
both primarily from the effects of solar radiation upon the comet's nucleus
-Comet nuclei are loose collections of ice, dust, and small rocky particles,
measuring a few kilometers or tens of kilometers across
-Have a variety of different orbital periods, ranging from a few years, to hundreds
of thousands of years, while some are believed to pass through the inner Solar
System only once before being thrown out into interstellar space
Short-period comets - CORRECT ANSWER-Thought to originate in the Kuiper
Belt, or associated scattered discs, which lie beyond the orbit of Neptune
Long-period comets - CORRECT ANSWER--Believed to originate at a much
greater distance from the Sun, in a cloud (the Oort cloud) consisting of debris left
over from the condensation of solar nebula
, -Comets are thrown from the outer planets or nearby stars, or as a result of
collisions
Asteroids - CORRECT ANSWER--Sometimes called minor planets or planetoids
-Bodies—primarily of the inner Solar System—that are smaller than planets but
larger than meteoroids, excluding comets
-The distinction between asteroids and comets is made by visual appearance;
when discovered, comets show a perceptible coma while asteroids do not
Earth - CORRECT ANSWER--Travels in an orbit that is slightly elliptical (oval),
and so the distance from the sun ranges from 91.5 to 94.5 million miles
-Its daily rotation deforms the earth to a flattened spheroid, with a polar radius
slightly less than the equatorial radius
Locations of the surface are described by a grid of latitude and longitude lines
Gravity and inertia - CORRECT ANSWER--Both gravity and inertia work
together to keep planets in orbit around the sun
-Inertia makes a planet travel in a straight line
-By definition, inertia is the tendency of a moving object to stay in a straight line
or a stationary object to remain in place
-However, the power of the sun's gravity pulls the planets toward the sun
