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As comets approach and move around the Sun, the coma and the tail ______________
in size.
A) decrease
B) increase
C) remain the same
D) none of the above
A volcano with a low, gently sloping profile is a
A) composite volcano.
B) stratovolcano.
C) shield volcano.
D) cinder cone.
Work is defined as force times
A) distance.
B) time.
C) parallel distance.
D) perpendicular distance.
Identify each of the following molecules as either polar or nonpolar.
a. ClO
b. N2
c. Cl2
d. CH4
The relationship between mass and weight is given by the equation
A) m = wg.
B) w = m/g.
C) g = mw.
D) w = mg.
The closest star to the Sun is about how far away?
A) 17.7 light-years
B) 0.52 light-years
C) 33.6 light-years
D) 4.3 light-years
Which of the following is the softest mineral on the Mohs scale?
A) Talc
B) Gypsum
C) Diamond
D) Quartz
A Doppler red shift indicates
A) a shift toward lower frequencies.
B) a shift toward shorter wavelengths.
C) that a light source is approaching relative to the observer.
D) none of these.
The percentage composition by mass of water is approximately
A) 2% H and 1% O.
B) 11% H and 89% O.
C) 1% H and 99% O.
D) 2% H and 16% O.
How many nucleons are there in an atom of ?
A) 92
B) 143
C) 235
D) None of these
The number of daylight hours before 12 noon is ______________ the number of
daylight hours past 12 noon.
A) greater than
B) less than
C) approximately the same as
The Celsius degree is
A) the same size as the Fahrenheit degree.
B) larger than the kelvin.
C) the same size as the kelvin.
D) smaller than the Fahrenheit degree.
A sea breeze on a coast is the result of
A) Rayleigh scattering.
B) a convection cycle.
C) the Coriolis force.
D) friction or drag.
The Lewis symbol would be characteristic of which group?
A) 6A
B) 8A
C) 3A
D) 7A
Short-period comets, such as Halley's comet, are believed to come from
______________.
A) the Kuiper Belt
B) the Oort cloud
C) the asteroid belt
D) Earth
Which of the following is usually burned up in Earth's atmosphere?
A) Asteroid
B) Meteoroid
C) Meteor
D) Meteorite
One watt is equal to one joule per ______________.
A) second
B) newton
C) hour
D) kilogram
An ammonia molecule is
A) pyramidal and polar.
B) pyramidal and nonpolar.
C) flat and polar.
D) flat and nonpolar.
The longest-daylight day for people in the Northern Hemisphere at latitudes greater
than 30N occurs at the
A) summer solstice.
B) vernal equinox.
C) winter solstice.
D) autumnal equinox.
The speed of light in a material is 2.35 x 108 m/s. What is the index of refraction of this
material?
A) 1.28
B) 0.783
C) 2.35
D) 0.294
The SI unit of heat is the
A) calorie.
B) joule.
C) kilocalorie.
D) Btu.
Which of the following is true? The number of daylight hours depends on
A) the International Date Line.
B) the longitude.
C) the latitude.
D) all of these.
The planet with the Great Red Spot is
A) Jupiter.
B) Neptune.
C) Uranus.
D) Saturn.
E) Mars.
The Doppler effect is observed only when
A) the source of a wave moves toward a stationary observer.
B) there is relative motion between the source of a wave and an observer.
C) an observer moves toward the stationary source of a wave.
D) both the source of a wave and an observer are moving toward each other.
Which type of atom is the standard on which the atomic mass scale is based?
A) 12C
B) 16O
C) 1H
D) 56Fe
What is the hardness of talc on the Mohs scale?
A) 1
B) 4
C) 7
D) 10
After four half-lives have elapsed, what fraction of the original amount has changed
into another element?
A) 3/4
B) 7/8
C) 15/16
D) None of these
One kilogram is the same as
A) 1000 g.
B) 1/1000 kg.
C) 10,000 g.
D) 0.001 g.
Which of the following statements is nottrue?
A) Displacement has a direction and a magnitude.
B) Acceleration has a magnitude only.
C) Speed has a magnitude only.
D) Velocity has a magnitude and a direction.
The Moon's orbital plane is inclined to Earth's orbital plane by
A) 0.
B) 5.
C) 23.5.
D) 30.
In the equation ac= v2/rfor centripetal acceleration, the rstands for
A) diameter.
B) distance.
C) radius.
D) rate.
The discovery of seafloor spreading led to acceptance of the theory of
A) plate tectonics.
B) volcanism.
C) convergence.
D) divergence.
What is the formula of the compound formed from the ions of aluminum and oxygen?
A) Al2O3
B) AlO
C) AlO3
D) None of these
Diamond, graphite, and buckyballs are
A) isotopes.
B) allotropes.
C) isomeres.
D) diatomic.
The north pole of a compass points toward Earth's magnetic ______________ pole.
If two protons are moved 3 times farther apart, the electrical force between them is
what factor of the original force?
Proof that Earth revolves around the Sun is obtained by the use of ______________ and
the ______________.
The Fahrenheit scale has a ___________ degree size than the Celsius scale.
The downslope movement of an unbroken block of rock or soil, which leaves a curved
depression on the slope, is called a(n) ______________.
The voltage for typical home appliances is ______________.
For Newton's third law, the action and reaction forces are equal in magnitude and
______________ in direction.
A metric ton is ______________ kg.
Earthquake waves are monitored by an instrument called a(n) ______________.
In the United States, the southernmost point of the Sun is known as the
______________.
______________ is the apparent motion that occurs between two fixed objects when
the observer changes position.
Atomic nuclei that decay of their own accord are said to be ______________.
Short-period comets, such as Halley's Comet, are believed to come from the
______________.
The meter is defined in terms of the speed of ______________.
The number of neutrons available to cause fission in a nuclear reactor is adjusted by
inserting or withdrawing the ______________.
The element named ______________ was detected spectroscopically on the Sun before
it was found on Earth.
Tsunami is the correct term for what was formerly referred to as a(n) ______________
wave.
