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In a debate, is the statement "It's only a theory" a valid argument point against a theory
(as in "The theory of evolution is wrong because it's only a theory")?
A) Yes, theories are weak.
B) No, theories are strong.
C) No, theories are weak.
D) Yes, theories are meaningless.
The major source of CO pollution is
A) combustion for electrical generation.
B) industry.
C) domestic heating.
D) transportation.
If the instantaneous velocity of an object is constant, then so is its
A) velocity.
B) distance.
C) acceleration.
D) displacement.
Which of the following could be the molecular formula for an alkane?
A) C6H6
B) C6H12
C) C6H11
D) C5H8
E) C4H10
To which group of polymers does Dacron belong?
A) Natural
B) Hydrolytic
C) Addition
D) Condensation
The cataclysmic explosion of a star that throws most of its matter into space is called a
_______________.
A) supernova
B) solar flare
C) solar blast
D) novaton
Which of the following units is used to express atmospheric pressure?
A) Torr only
B) Millibar only
C) Inches of Hg only
D) All of these
Which of the following is not a unit of power?
A) ft lb/s
B) N m
C) J/s
D) watt
Which of the following instruments detects and measures radioactivity?
A) Geiger counter
B) Cyclotron
C) Tokamak
D) Mass spectrometer
At which latitude is the noonday Sun overhead twice a year?
A) 30S
B) 23S
C) 24N
D) 30N
A loop-like bend in a river channel is called
A) a meander.
B) a stream.
C) a detour.
D) none of these.
Which of the following is nota standard metric unit?
A) Kilogram
B) Meter
C) Second
D) Gram
Which of the following atoms normally has one covalent bond to it?
A) At
B) O
C) Si
D) N
E) Kr
The earliest evidence of ancient life, blue-green algae, are
A) cyanobacteria.
B) amber.
C) foraminifera.
D) coal.
The longest-daylight day for people in the Northern Hemisphere at latitudes greater
than 25N occurs when the noon Sun is overhead at the
A) Greenwich meridian.
B) Tropic of Cancer.
C) equator.
D) Tropic of Capricorn.
Which of the following polyatomic ions has a doubly negative charge?
A) Acetate
B) Sulfate
C) Phosphate
D) Ammonium
The Sun is a(n)
A) cluster.
B) planet.
C) star.
D) galaxy.
During a thunderstorm, an observer notes that 20 s elapsed between the lightning flash
and the sound of the thunder. What is the approximate distance, in miles, from the
observer to the lightning?
A) 20 mi
B) 100 mi
C) 4 mi
D) 400 mi
Neutrons are good "projectiles" for inducing nuclear reactions because they
A) have no electric charge.
B) are themselves unstable.
C) are highly energetic.
D) have no mass.
The process of leveling of the Earth by the wearing away of high places and the
transportation of sediment to lower places is known as
A) mass wasting.
B) the hydrologic cycle.
C) degradation.
D) gradation.
The leastdiffraction occurs for
A)
< d.
B)
= d.
C)
> d.
D) none of these; that is, it makes no difference.
The ionic compound made of Fe3+ and CO3
2- ions would have the formula
A) Fe3(CO3)2.
B) FeCO3.
C) Fe2(CO3)3.
D) none of these
A(n) ______________ is an elementary particle with a charge of +1.6 x 10-19C.
A) electron
B) neutron
C) proton
D) atom
The principal gases responsible for the greenhouse effect are
A) water vapor and oxygen.
B) oxygen and nitrogen.
C) carbon dioxide and nitrogen.
D) carbon dioxide and water vapor.
A home fireplace loses most of its heat by
A) radiation into the room.
B) convection up the chimney.
C) radiation up the chimney.
D) conduction to the sides of the fireplace.
An object travels in a circle of radius 10.0 m with a constant speed of 3.0 m/s. What is
the direction of its acceleration?
A) Toward the center of the circle
B) Normal to the plane of the circle
C) Insufficient data given for determination
D) Tangential to the circle
E) None of these
A substance that increases the rate of a chemical reaction but is notconsumed in the
reaction is called
A) an oxidizing agent.
B) a catalyst.
C) an activation agent.
D) a reducing agent.
Average speed multiplied bytime gives
A) average acceleration.
B) displacement.
C) instantaneous speed.
D) distance.
In a heat pump,
A) heat is used to do work.
B) heat flows spontaneously.
C) the same process is used as in a heat engine.
D) work is used to transfer heat.
In order, from top to bottom, in the activity series come Li, K, Ba, Na, Al, Zn, Sn, and
Pb. Therefore,
A) tin is more active than lead.
B) zinc is more active than aluminum.
C) potassium is more active than lithium.
D) sodium is more active than barium.
Tracks, borings, and burrows are examples of
A) replaced remains.
B) index fossils.
C) trace fossils.
D) microfossils.
When there is a net absorption of energy in a chemical reaction, it is called a(n)
______________ reaction.
A) exothermic
B) activation
C) endothermic
D) combustion
A temperature of degrees "60 Fahrenheit is equivalent to _____ Kelvin.
A) 221.9
B) 213.0
C) "51.1
D) "333.0
A waning crescent moon can appear on an observer's meridian between
______________ and ______________. (Answers in times of day.)
A(n) ______________ converts mechanical energy into electrical energy.
The color of a mineral's powder is called its _____________.
Use the following to answer questions 73-77:
Temperatures 1 and 2 are the ______________ and the ______________, respectively.
______________ is the major moon of Neptune.
A high tide is occurring at Charleston, South Carolina (80W,33N). What two longitudes
are experiencing low tide?
A river's suspended load and bed load may accumulate at its mouth and form a(n)
______________.
The atomic mass of a hypothetical element consisting of 50% 30X and 50% 32X would
be about ______________ u.
The principal quantum number is symbolized by the letter ______________.
A quantity that is capable of producing motion or a change in motion is called a(n)
______________.
The continuous-chain alkane with the formula C6H14is named ______________.
What does 6 1012times 3 10-9divided by 2 10-17equal?
In chemical equations, numbers placed before formulas are known as ______________.
When a fat is treated with NaOH, the ester bonds break to form glycerol and the sodium
salts of fatty acids, which are known as ______________.
Ice is less dense than liquid water because of ______________ bonding.
A radar pulse returns 3.0 x 10-4 s after it was sent out and reflected by an object. What
is the separation distance of the radar source and the object?
Seafloor spreading occurs along ______________.
An indication of an object's inertia is given by its ______________.
The Petrified National Forest is found in the state of ______________.
An air mass forming over the Gulf of Mexico would be classified as ______________.
