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A Group 7A element would be most likely to form a covalent bond with elements of
Group
A) 2A.
B) 1A.
C) 8A.
D) 6A.
The ______________ angle added to the altitude angle equals 90.
A) inclination
B) declination
C) altitude
D) zenith
Pangaea is believed to have broken up about how many years ago?
A) 2000 million
B) 2 million
C) 20 million
D) 200 million
An acid added to a base will produce a
A) salt and hydrogen ions.
B) salt and hydroxide ions.
C) salt and water.
D) stronger acid and base.
Which organic compound is represented by a triangle?
A) Trianol
B) Cyclopropane
C) Benzene
D) Cyclobutane
E) Methane
In organic molecules, a carbon atom will normally form how many bonds?
A) 1
B) 4
C) 3
D) 2
E) 0
The Oligocene is a(n)
A) epoch.
B) era.
C) eon.
D) period.
The rate of a chemical reaction would be decreasedby
A) stirring the reactants.
B) increasing the concentration of the reactants.
C) adding a catalyst to the reactants.
D) cooling the reactants.
The Moon is thought to be
A) older than Earth.
B) the same age as Earth.
C) younger than Earth.
D) infinitely old.
The process of leveling of the Earth by the wearing away of high places and the
transportation to and deposition of sediments at lower levels is called
A) gradation.
B) weathering.
C) erosion.
D) none of the above.
Dikes are examples of ______________ plutons.
A) discordant
B) concordant
C) recordant
D) precordant
A pint of water (on Earth) is approximately
A) 1 pound.
B) 1 gram.
C) 1 kilogram.
D) 1 quart.
An example of a diatomic molecule of a compound is
A) P4.
B) NO2.
C) N2.
D) CO.
A mid-ocean ridge is formed at the boundary of two plates
A) that are separating from one another.
B) that are sliding horizontally past one another.
C) where one is pushing over the top of the other.
D) that are basically at rest.
Which of the following were marine invertebrates that looked like plants and left fossil
segments sometimes called "Indian money"?
A) Trilobites
B) Gastropods
C) Crinoids
D) Brachiopods
Discrete wavelengths of light are emitted by an excited gas because
A) the speed of light is constant in a given medium.
B) light can behave either as a wave or as a particle.
C) electron energy levels are quantized.
D) the intensity of radiation is proportional to the second power of the frequency.
The angle between true north and the direction in which a compass needle points is
called the angle of
A) attack.
B) inclination.
C) declination.
D) dip.
Which of the following Period 4 elements has the smallest atom?
A) Kr
B) Ga
C) Ca
D) Br
The Sun projects charged particles into space, giving rise to a flow of radiation called
the
A) heliosphere.
B) solar wind.
C) corona.
D) chromosphere.
The essentials of the first law of motion were initially developed by
A) Aristotle.
B) Galileo.
C) Newton.
D) an unknown scientist.
A stream of a certain liquid compound is not attracted to an electrically charged rod.
The compound is probably
A) metallic.
B) ionic.
C) nonpolar covalent.
D) polar covalent.
Nix and Hydra are moons of ______________ .
A) Earth
B) Venus
C) Neptune
D) Mars
E) Pluto
A system may
A) be isolated.
B) have real boundaries.
C) have imaginary boundaries.
D) all of these
The direction of the magnetic field of a bar magnet is
A) in the direction a compass would point.
B) in any direction.
C) away from the south pole.
D) toward the north pole.
The Lewis symbol would be characteristic of which group?
A) 6A
B) 8A
C) 3A
D) 7A
It is believed that excessive CO2 emissions will cause
A) a decrease in Earth's average temperature.
B) a decrease in Earth's average rainfall.
C) an increase in Earth's average rainfall.
D) an increase in Earth's average temperature.
A terrestrial planet that has seasonal changes is
A) Venus.
B) Mars.
C) Mercury.
D) Saturn.
When a meteoroid enters Earth's atmosphere, it is called a(n) ______________.
A) meteor or "shooting star"
B) asteroid
C) star
D) planet
E) dwarf planet
The ozone layer lies in the
A) stratosphere.
B) troposphere.
C) mesosphere.
D) thermosphere.
Chemical sedimentary rocks are classified into what two categories?
A) Organic and inorganic
B) Fine and coarse
C) Intrusive and extrusive
D) Concordant and discordant
For a specific element, photons of how many different energies could be emitted by
electrons in the n= 3 level as they return to the n= 1 level?
A) 1
B) 4
C) 2
D) 3
The threshold of hearing is
A) 0 dB.
B) 180 dB.
C) 200 dB.
D) 70 dB.
E) 1 dB.
The Ulyssesspace probe of the Sun encountered the planet Jupiter in 1998 and returned
to make a second sweep over the Sun's poles in 2000"2001. Determine the time (in
seconds and minutes) that it took a radio signal to reach Earth when the space probe
was at Jupiter. (Use 778 106km for the distance from the space probe to Earth. The
distance varies because Earth and Jupiter are orbiting the Sun.)
What is the frequency of yellow-green light that has a wavelength of 550 nm?
Hydrocarbons with the general formula CnH2n+2are called ______________.
All waves transfer ______________.
How many times greater is the speed of red light (
= 700 nm) than the speed of violet
light (
= 400 nm) in a vacuum?
The low-pressure center of a hurricane is called the ______________.
A general name for an intrusive igneous rock formation is ______________.
A(n) ______________ quantity has both magnitude and direction.
A solid solution of two or more metals is called a(n) ______________.
State which element is oxidized and which is reduced in the reaction Al + 3F22AlF3.
______________ tides occur during the first-quarter and last-quarter moon phases.
A wave with a frequency of 5 Hz will have a period of ______________ s.
An important radiometric dating process is the decay of potassium-40 to
______________-40.
______________ faulting occurs as the result of forces parallel to the fault plane.
A sample of gas has its number of molecules halved, its Kelvin temperature doubled,
and its volume halved. What is the new pressure, relative to the original pressure?
A horsepower is a unit of power equal to 550 ______________.
Use the following to answer questions 73-77:
The substance is entirely a solid between points ______________ and
______________.
The expression V= IRis called ______________.
