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The imaginary line encircling Earth at its surface, halfway between the north and south
geographic poles, is called the
A) meridian.
B) equator.
C) International Date Line.
D) longitude.
E) latitude.
Which of the following is(are) believed to be material that never collected into a single
planet?
A) Asteroids
B) Meteoroids
C) Comets
D) Interplanetary dust
An object in uniform circular motion has
A) constant acceleration.
B) variable radial distances.
C) constant velocity.
D) constant speed.
A loop-like bend in a river channel is called a
A) rounder.
B) cirque.
C) wander.
D) meander.
In measuring any temperature less than 500 Fahrenheit, which of the following scales
will have the highest numeric reading?
A) Fahrenheit
B) Celsius
C) Kelvin
D) None of these
A method of expressing the accuracy of measured quantities is
A) metric prefixes.
B) derived units.
C) significant figures.
D) conversion factors.
The term Cambrian explosion refers to
A) an asteroid impact.
B) the breakup of a supercontinent.
C) intense, widespread volcanic activity.
D) a proliferation of life forms.
An automobile air bag
A) increases the contact time in stopping a person.
B) reduces the impact force in a collision.
C) increases the surface area of the impact force.
D) does all of the above.
Transverse seismic body waves are known by the letter ______________.
A) B
B) P
C) S
D) T
Which of the following could be the molecular formula for an alkene?
A) C5H5
B) C2H4
C) C3H5
D) C2H2
E) C3H8
If the voltage across a resistor is doubled, the current will
A) remain the same.
B) be cut to one-fourth.
C) be cut in half.
D) be doubled.
E) be quadrupled.
The equation 1H2SO41H2O + 4O2is not appropriately written because
A) oxygen is not diatomic.
B) fractional coefficients are not generally used.
C) the number of atoms of each element on each side is not the same.
D) the simplest set of coefficients has not been used.
Which of the following is not one of the three types of plate boundaries?
A) Diverging
B) Converging
C) Fault-block
D) Transform
For a temperature of "40°F, what are the corresponding temperatures on the
a. Celsius scale?
b. Kelvin scale?
Which of the following represents the shortest distance?
A) One parsec
B) One astronomical unit
C) One light-year
D) One right ascension
The Big Dipper is a(n)
A) cluster of galaxies.
B) constellation.
C) galaxy.
D) asterism.
Chloroform can be broken down by chemical means but not by physical methods. Thus
chloroform is
A) a homogeneous mixture.
B) an element.
C) a compound.
D) a heterogeneous mixture.
Which of the following could be the formula of an alkyne?
A) C6H6
B) C6H10
C) C6H12
D) C6H14
Radio waves, of sufficient frequency, pass through which of the following ion layers?
A) C
B) D
C) E
D) F
An object is dropped (g= 9.80 m/s2) and falls for 5.00 s before hitting the ground.
a. How far has the object fallen?
b. What is the final velocity?
c. What is the final acceleration?
When an oscillator is driven in resonance,
A) there are no standing waves.
B) any driving frequency may be used.
C) all natural frequencies are present.
D) there is maximum energy transfer.
How many moles of He would 3.01 x 1023 helium atoms be?
A) 2.00
B) 4.00
C) 0.50
D) 1.00
E) None of these
The oldest era in the Phanerozoic eon is the ______________ era.
The electric company charges a home on the basis of consumption of
A) resistance.
B) energy.
C) current.
D) voltage.
E) power.
The Paleocene is a(n)
A) epoch.
B) era.
C) eon.
D) period.
When a material is found to have no definite volume and no definite shape, what is the
phase of the material?
A) Gas
B) Liquid
C) Plasma
D) Solid
The angular momentum of a body is constant if the
A) net torque is zero.
B) net force is constant.
C) net torque is constant.
D) net force is zero.
The unsaturated zone of soil above the water table is known as the zone of
A) permeability.
B) unsaturation.
C) presaturation.
D) aeration.
An object is placed 20 cm from a converging spherical lens. Sketch ray diagrams and
give the general characteristics of the image for (a) a lens with a focal length of f= 15
cm and (b) a lens with a focal length of f= 25 cm.
Which of the following sound frequencies lie(s) outside the audible range?
A) 25 Hz
B) 35 kHz
C) 4800 Hz
D) All of these
At approximately what temperature does water have its greatest density?
A) 4°C
B) 100°C
C) 0°C
D) None of these; the density of water is constant at all temperatures.
A heat engine
A) converts heat to work.
B) converts heat to internal energy.
C) transfers heat from a low-temperature reservoir.
D) converts work to heat.
If the activity of a sample of 232Th decreases from 1000 cpm to 500 cpm in 60 min, in
another 60 min its activity will be
A) 500 cpm.
B) 0 cpm.
C) 250 cpm.
D) 125 cpm.
The transition between the troposphere and the stratosphere is called the
A) stratopause.
B) tropopause.
C) mesopause.
D) thermopause.
The Cascade Mountains in the northwestern United States are examples of
______________ mountains.
______________ has the general formula (C6H10O5)n, where nmay take on values up
to 3000.
Power may be expressed as _____________ times resistance.
The term ______________ refers to the tendency of some mineral to break along flat
planes at definite angles.
A liter of water at room temperature (20°C) is heated to its boiling temperature. How
many kilocalories of heat are required?
Hydrocarbons are first divided into aromatic and ______________ hydrocarbons.
The absolute moisture content of the air is 7.7 g/ft3 on a day when the air temperature is
75F. What is the relative humidity?
Frost wedging is a common type of ______________ weathering.
The major moons of ______________ were named after literary characters.
Newton's law of gravitation applies to all ______________.
The dying glow of the Big Bang is called the _______________.
Because of the ______________ zones formed by S and P waves as they travel through
Earth, the outer core is thought to be a viscous liquid.
The alpha scattering experiment resulted in the discovery of the ______________.
The Moon's albedo is ______________.
The energy of the electron in the hydrogen atom has only certain ______________
values.
If the wave frequency is doubled, the period of the wave is ______________.
Balance the chemical equation: Cu + Al2O3CuO + Al
The central core of the atom is called the ______________.
When the Moon appears on an observer's meridian at midnight, it is called a(n)
______________ moon.
