Glencoe Science Level Blue

Chapter 12: The Solar System

The Solar System

1
Which of Jupiter's four largest moon's oceans do scientists hope to explore in the near future?
A)Ganymede
B)Io
C)Europa
D)Callisto
2
Why is Venus often called Earth's twin?
A)because of similar temperatures
B)because of its similar topography
C)because life also existed there at one time
D)because of its similar size
3
One of the main differences between the outer and inner planets is __________.
A)the outer planets have rings, and the inner planets don't
B)the outer planets are gas planets
C)the inner planets are all terrestrial
D)the inner planets are much bigger than the outer planets
4
Why is Venus hot?
A)because of its closeness to the Sun
B)because of the carbon dioxide in the atmosphere
C)because of its position in the solar system
D)because of the volcanoes
5
Who developed the sun-centered model of the solar system?
A)Nicholas Copernicus
B)Galileo Galilei
C)Johannes Kepler
D)Clyde Tombaugh
6
What causes Mars to appear reddish?
A)the iron oxide surface
B)its position in the solar system
C)the carbon dioxide in the atmosphere
D)its distance from the Sun
7
What happened to the dust and gas that did not contribute to forming the Sun?
A)It created other stars.
B)It was all burned up by the Sun.
C)It was lost forever.
D)It created the planets.
8
Why does Mercury have such a thin atmosphere?
A)because of its extreme temperatures
B)because of its rocky cliffs
C)because of its small size and gravitational pull
D)because of its iron core
9
The Great Red Spot on Jupiter is __________.
A)a mountain range
B)a tremendous storm
C)an ocean of liquid hydrogen
D)a volcano
10
How can Saturn be the second largest planet, as well as the lowest in density?
A)It is made of a large, rocky core.
B)It is composed mostly of hydrogen and helium
C)It is made mostly of water vapor.
D)It is composed mostly of methane and ammonia
11
What is the difference between meteors and comets?
A)Comets are made of frozen ice and rock and meteors are made of rock.
B)Most comets are found outside the solar system, and meteors are found within.
C)Meteors can burn up as they enter a planet's atmosphere and comets rarely enter a planet's atmosphere.
D)all answers are correct
12
How many moons does Pluto have?
A)none
B)three
C)two
D)one
13
Which planet did the Viking probes explore?
A)Mars
B)Venus
C)Jupiter
D)Mercury
14
What evidence of water on Mars did the Mars Pathfinder find?
A)water that is possibly frozen into the crust at Mars's poles
B)all answers are correct
C)features like gullies
D)Samples of Martian crust indicated that iron had been leached out by groundwater.
15
Why do scientists think is the cause of Uranus's titled orbit?
A)It collided with another object in space.
B)It's a result of its distance from the Sun.
C)It was created that way.
D)The temperatures out in space caused the planet to tilt.
16
What caused the dense cloud scientists hypothesize created our solar system to increase in temperature as it condensed?
A)increasing density
B)increasing speed
C)increasing friction
D)increasing mass
17
How many planets are in our solar system?
A)nine
B)eight
C)unknown
D)ten
18
Which of Jupiter's four largest moons is the most volcanically active?
A)Europa
B)Ganymede
C)Callisto
D)Io
19
Scientists theorize that Jupiter's core is __________.
A)made of hydrogen and helium
B)rocky
C)made of ammonia and methane
D)made of water vapor
20
When atoms combine to form heavier atoms, _________ occurs.
A)friction
B)fission
C)refraction
D)fusion
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