Unlock document.
This document is partially blurred.
Unlock all pages and 1 million more documents.
Get Access
An ionic compound composed of a cation other than H+and an anion other than OH-is
called a(n)
A) salt.
B) precipitate.
C) conjugate base.
D) electrolyte.
When a net force on a moving object increases, the object will
A) maintain the same velocity.
B) always show an increase in speed.
C) exhibit a change in speed and/or direction.
D) maintain a constant acceleration.
When air is cooled below its dew point without condensation, it is said to be
A) wet.
B) dry.
C) supersaturated.
D) unsaturated.
A freely falling object
A) has a uniformly increasing velocity.
B) is unaffected by gravity.
C) has a uniformly increasing acceleration.
D) has a uniformly increasing displacement.
When the Sun is on the horizon, it is actually lower than it appears because of
A) refraction.
B) dispersion.
C) scattering.
D) reflection.
Which of the following divisions of time cannotbe changed by a human decision?
A) 60 minutes in an hour
B) 365.2422 days in a year
C) 7 days in a week
D) 24 hours in a day
The standard unit of distance in the mks system is the
A) centimeter
B) inch
C) kilometer
D) meter
E) second
In nuclear fusion,
A) light nuclei combine to form a heavier nucleus.
B) a large nucleus splits into two smaller ones.
C) an initial reaction triggers a chain reaction.
D) protons are converted into neutrons and energy.
A series of ocean waves, each 12.0 m from crest to crest and moving past an observer at
a rate of 6.0 waves per second, has what speed?
A) 72 m/s
B) 2 m/s
C) 6 m/s
D) 0.5 m/s
A mineral that has a vitreous luster looks
A) glassy.
B) metallic.
C) earthy.
D) pearly.
Which of the following four objects has the least kinetic energy?
A) An object of mass m moving with speed 4v
B) An object of mass 3m moving with speed 2v
C) An object of mass 4m moving with speed v
D) An object of mass 2m moving with speed 3v
E) None of these; all four objects have the same kinetic energy.
The international time standard is
A) GMT.
B) UTC.
C) solar time.
D) Zulu.
Alcohols are distinguished by the fact that at least one hydrogen atom in a hydrocarbon
has been replaced by a(n)
A) carboxyl group.
B) alkyl group.
C) hydroxyl group.
D) oxygen atom.
The substances that are formed by a chemical reaction are called the
A) products.
B) reactants.
C) chemicals.
D) precipitates.
An increase of 50 dB increases the sound intensity by a factor of
A) 10000.
B) 500000.
C) 100000.
D) 50000.
If all samples of a material have identical properties and composition, it is
A) a compound.
B) an element.
C) a homogeneous mixture.
D) an element or compound.
The ozone layer causes a temperature increase in the
A) thermosphere.
B) mesosphere.
C) troposphere.
D) stratosphere.
Water solutions of which of the following are basic?
A) Soft drinks
B) Baking soda
C) Lemonade
D) Vinegar
Which phenomenon shows that quanta of light, or photons, exist?
A) Diffraction
B) Polarization
C) The photoelectric effect
D) Interference
The bending of waves around corners is called
A) reflection.
B) refraction.
C) diffraction.
D) interference.
A sound with a frequency of 11 Hz is in the ______________ region of the sound
spectrum.
A) infrasonic
B) ultrasonic
C) audible
D) visible
When the term singularityis mentioned, the object under discussion is probably a
A) white dwarf.
B) black hole.
C) neutron star.
D) nova.
Tides occur later each day because of
A) Earth's rotation with respect to the Sun.
B) the Moon's rotation with respect to Earth.
C) Earth's rotation with respect to the Moon.
D) a change in gravitational attraction.
When light enters a denser medium and is refracted,
A) the wavelength is unchanged.
B) the wave speed increases.
C) the frequency is unchanged.
D) the wavelength increases.
When the relative humidity is 100%, the air temperature is equal to
A) the lapse rate.
B) 100F.
C) the dew point temperature.
D) none of these.
The hollow depression left when a shell or bone is dissolved completely out of a rock is
called a(n)
A) groove.
B) hole.
C) cast.
D) mold.
What is the identity of stomach acid?
A) HC2H3O2
B) H2CO3
C) HCl
D) H3PO4
About what percent of Earth's surface is covered by land?
A) 70%
B) 10%
C) 50%
D) 30%
In the equation A = B/C, the A and C are said to be _______________ proportional.
A) directly
B) inversely
C) not
D) exactly
Wave period is the reciprocal of
A) amplitude.
B) frequency.
C) wave velocity.
D) all of these.
A high tide is occurring at Charleston, South Carolina (157W, 54N). At approximately
what other longitude is a high tide occurring?
A) 23E
B) 157E
C) 67E
D) 67W
E) 23W
Images of objects are formed by lenses because of
A) refraction.
B) diffraction.
C) internal reflection.
D) all of these.
According to the law of conservation of energy, energy cannot be ______________ or
______________.
A ball dropped from the top of a building hits the ground 8.0 s later. How high is the
building (in meters)?
The seriousness of an asteroid collision is gauged by the ______________ scale.
Express 100 megadollars in standard powers-of-10 notation.
Liquid density may be measured with a(n) ______________.
When 10 kcal of heat is added to 2.0 kg of a substance, its temperature increases 20° C.
What is the specific heat of the substance?
Calculate the energy, in joules, of photons of light with frequency 6.00 x 1014Hz.
A car travels at a constant speed of 100.0 km/h around a circular track with a diameter
of 1.00 km. What is the magnitude of the car's centripetal acceleration, and what
supplies this?
When rocks and geologic events are placed in chronological order without regard to
actual dates, ______________ geologic time is obtained.
New material filling a mold forms a(n) ______________ of the original shell or bone.
The Great White Spot is a feature of ______________.
Arrange the atoms magnesium, fluorine, strontium, and sulfur in order of increasing
ionization energy.
Plasmas are controlled and manipulated using an approach called ______________
confinement.
The product of one ______________ and one meter is one joule.
Coal, gas, and oil are ______________ fuels.
The central, completely dark portion of a shadow is call the ______________.
After nitrogen and oxygen, the major constituent of the air is___________.
An ionic compound formed from a cation other than H+and an anion other than OH-is
called a(n) ______________.
The Paleozoic era ended and the Mesozoic era began about ______________ million
years ago.
A(n) ______________ is a substance composed of two or more elements chemically
combined in a definite, fixed proportion by mass.
