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The elapsed time between two successive crossings of the same meridian by the Sun is
known as ______________ day.
A) one sidereal
B) an apparent solar
C) a 24-hour
D) a mean solar
The word sciencecomes from the Latin word meaning
A) "experiment."
B) "investigate."
C) "knowledge."
D) "debate."
When the equation Al + O2Al2O3is balanced, the coefficient of O2is
A) 1
B) 2
C) 3
D) 4
The mass of a cubic meter of water is
A) 1 metric ton.
B) 100 kg.
C) 100 L.
D) 1 lb.
Which of the following is the most variable constituent of air?
A) Argon
B) Oxygen
C) Water vapor
D) Nitrogen
If Earth's axis were tilted at 30, the daylight hours in Washington, D.C., in June would
A) remain the same.
B) be greater.
C) be less.
D) be equal to the hours of darkness.
How much heat is necessary to change 30 g of water at 100°C into steam at 100°C?
A) 0.24 kcal
B) 16200 kcal
C) 16.2 kcal
D) 2.4 kcal
How many constitutional isomers that are dibromocyclopropanes exist?
A) 3
B) 8
C) 4
D) 2
E) 5
Kepler's second law of planetary motion is known as the law of
A) ellipses.
B) equal areas.
C) harmonic periods.
D) gravitation.
A solution of 5% acetic acid and 95% water is called
A) chloroform.
B) antifreeze.
C) vinegar.
D) gasohol.
E) alcohol.
The transition between the stratosphere and the troposphere is called the
A) stratopause.
B) tropopause.
C) mesopause.
D) thermopause.
The Paleozoic era ended with an event called the
A) Chicxulub Impact.
B) Cambrian Explosion.
C) Great Dying.
D) Pangaean Rift.
The low-pressure center of a hurricane is called the
A) eye.
B) vortex.
C) lid.
D) cap.
The substances that are diminished in a chemical reaction are called the
A) products.
B) reactants.
C) chemicals.
D) precipitates.
Latitude is the angular measurement in degrees
A) east or west of the prime meridian.
B) north or south of the prime meridian.
C) north or south of the equator.
D) north or south of the celestial equator.
Any indication of prehistoric life preserved in rock is called
A) a shale.
B) a radionuclide.
C) a fossil.
D) none of these.
Spring tides occur close to the time of ______________ moon.
A) the new
B) the first-quarter
C) both the new and the full
D) the last-quarter
When fast electrons strike a metal target, what are produced?
A) Radio waves
B) Gamma rays
C) X-rays
D) Microwaves
The speed of light in a particular transparent medium is 1/8 the speed of light in a
vacuum. What is the index of refraction of the material?
A) 2.7
B) 0.38
C) 8
D) 0.13
Which of the following would be the same for a person on the Moon rather than on
Earth?
A) Maximum jumping height
B) Weight
C) The amount of time for an object to fall 2 meters from rest
D) Mass
E) Gravitational acceleration
Which of the following is nota carbohydrate?
A) Maltose
B) Glucose
C) Fructose
D) Glyceryl tristearate
Which of the following is(are) drawbacks to the use of methane hydrate as a fuel?
A) When melted, it produces methane, a greenhouse gas.
B) It is difficult to mine as a solid located at the bottom of the oceans.
C) It is mixed with water.
D) All of these are drawbacks associated with methane hydrate.
The greatest diffraction occurs for
A)
< d.
B)
= d.
C)
> d.
D) none of these; that is, it makes no difference.
The major moons of ______________ were named after literary characters.
A) Mars
B) Jupiter
C) Saturn
D) Uranus
E) Neptune
Two of your classmates, each 82 kg, are separated by 2 meters. The gravitational force
of attraction between them in nano-newtons is
A) 2.7 nN
B) 1.4 nN
C) 0.0 nN
D) 164.7 nN
E) 112.1 nN
The standard unit of time in the mks system is the
A) meter
B) kilogram
C) second
D) minute
E) microsecond
Earth's axis is tilted ______________ degrees from the normal to the ecliptic plane.
A) zero
B) 90
C) 45
D) 23.5
To avoid toxic vapor, one can use a(n) ____________ barometer to measure pressure.
A) mercury
B) Galileo
C) aneroid
D) Torricelli
A successfully tested hypothesis may take on the status of a(n)
A) experimental result.
B) theory.
C) scientific law.
D) concept.
E) superior hypothesis.
The most abundant rocks in Earth's crust are the
A) sulfides.
B) oxides.
C) carbonates.
D) silicates.
The moons of Mars are believed to be captured ______________.
The shell electron configuration for an argon atom is ______________.
Which is longer, a meter or a yard?
At the time of the summer solstice, all latitudes from ______________ to 90N are
having 24 hours of daylight.
Small glaciers, called ______________ glaciers, form along mountains in hollow
depressions that are protected from the Sun.
The oldest algal fossils are found on the continent of ______________.
The sharply defined boundary that separates the crust from the mantle is called the
______________.
An object 30 cm in front of a concave spherical mirror (f= 10 cm) is moved toward the
mirror until it is 20 cm from it. Sketch ray diagrams for these cases and estimate the
factor by which the image magnification changes.
When the absolute magnitudes, or brightnesses, of stars are plotted against their surface
temperatures or colors, we obtain a(n) _______________ diagram.
Given that 1 L = 0.266 gal, the conversion factor for converting gallons to liters would
be __________________.
A class of pollutants formed at high temperatures (nearly complete combustion) in the
presence of air is ______________.
If 20.0 g of compound XY decomposes to form 12.0 g of element X and 8.00 g of
element Y, ______________ g of element X will be formed by the decomposition of
40.0 g of compound XY.
A reaction will occur when a piece of Mg is placed in aqueous Zn(NO3)2if Mg is
______________ Zn in the activity series.
Lightning between a cloud and the surrounding air is called ______________.
The dipole arrow in an FO bond would point toward the ______________ atom.
Newton's third law of motion states that whenever one object exerts a force upon a
second object, the second object exerts a(n) ______________ and ______________
force upon the first object.
Smog is a mixture of ______________ and ______________.
