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The kinetic energy of a pendulum is least
A) when its potential energy is least.
B) at the top of its swing.
C) at the bottom of its swing.
D) when its total energy is greatest.
"Weightlessness" occurs when an object
A) has zero acceleration.
B) is in free fall.
C) is midway between Earth and the Moon.
D) loses weight.
The symbol for carbon is
A) Ca.
B) Cr.
C) Co.
D) C.
A ______________ is always longer than a ______________ .
A) solar day; sidereal day
B) solar day; mean solar day
C) sidereal day; solar day
D) mean solar day; solar day
An endoergic reaction
A) releases energy.
B) requires a high temperature.
C) occurs only in stars.
D) absorbs energy.
The process by which raindrops are formed by the collision of droplets is called
A) the Bergeron process.
B) fusion.
C) fission.
D) coalescence.
The relative humidity is 100% when
A) the psychrometer wet-bulb temperature is depressed.
B) the actual moisture content is equal to the maximum moisture capacity.
C) the air temperature is above the dew point temperature.
D) the air temperature is 100F.
The insulation in walls uses which of the following methods to prevent heat transfer?
A) Conduction
B) Convection
C) Radiation
D) Conduction and convection
E) All of these
Radioactivity was discovered in
A) Berlin.
B) Berkeley.
C) Paris.
D) Cambridge.
A sound with a frequency of 1000 Hz is in the ______________ region of the sound
spectrum.
A) infrasonic
B) ultrasonic
C) audible
D) visible
The strong nuclear force is
A) strongly repulsive for distances less than 10-14m and strongly attractive for larger
distances.
B) zero for distances less than 10-14m and strongly attractive for larger distances.
C) strongly attractive for distances less than 10-14m and zero for larger distances.
D) strongly attractive for distances less than 10-14m and repulsive for larger distances.
The second most abundant element in the Earth's atmosphere is
A) oxygen.
B) argon.
C) nitrogen.
D) carbon dioxide.
A class of pollutants formed at high temperatures (nearly complete combustion) in the
presence of air is
A) sulfur oxides.
B) carbon oxides.
C) iron oxides.
D) nitrogen oxides.
The element barium should produce compounds most similar to those of
A) sodium.
B) nitrogen.
C) carbon.
D) calcium.
What happens to a sample of water when it is heated between 4°C and 100°C?
A) Its volume increases.
B) Its volume is reduced.
C) It vaporizes.
D) Nothing changes except its temperature.
An object's weight would be different on Earth and on the Moon. Which of the
following would also be different?
A) Mass density
B) Mass
C) Length
D) Volume
E) None of these
A cubic centimeter of pure water at maximum density has a mass of
A) 1 g.
B) 1 kg.
C) 1 cg.
D) 1 lb.
E) none of these
An usually results in
A) more rainfall for South America.
B) warmer water in the western Pacific.
C) less rainfall for Australia.
D) all of the above.
E) none of the above.
The percentage volume of unoccupied space in a material is called its
A) traction.
B) porosity.
C) permeability.
D) salinity.
The distance traveled by a dropped object in free fall is directly proportional to
A) the time squared.
B) its weight.
C) its mass.
D) none of these.
Wave frequency could be given in
A) 1/s.
B) s-1
C) Hz.
D) any of these.
What is bought from an electric company?
A) Electrical energy
B) Electric charge
C) Electrical power
D) None of these
When an unstable Ce nucleus undergoes beta decay, the nucleus formed is that of
A) Cerium.
B) Neodymium.
C) Lanthanum.
D) Barium.
E) Praeseodymium.
The energy necessary to start a chemical reaction is called the ______________ energy.
A) exothermic
B) activation
C) endothermic
D) combustion
The symbol for lead is
A) Pb.
B) La.
C) Li.
D) Xe.
The two major types of weathering studied in this chapter are mechanical weathering
and ______________ weathering.
A) stream
B) chemical
C) abrasion
D) adverse
If an object moves with constant velocity,
A) its speed is constant.
B) its direction is constant.
C) its average speed is constant.
D) its distance traveled per unit time is constant.
E) all of these
A solution with a pH of 14 is
A) strongly acidic.
B) weakly basic.
C) strongly basic.
D) weakly acidic.
Which of the following is nota property of an aqueous solution of an acid?
A) Reacts with many metals to liberate hydrogen gas
B) Changes the color of litmus dye from red to blue
C) Tastes sour
D) Conducts an electric current
Which of the following is not one of the three basic types of materials emitted when a
volcano erupts?
A) Lava
B) Breccia
C) Gas
D) Pyroclastics
Which of the following nuclides would be stable?
Which laboratory observation would most support the kinetic theory's assumption that
gas molecules have little attraction for one another?
A) A gas expands when the pressure on it is released.
B) A gas with a lower formula mass diffuses more rapidly than one with a higher
formula mass.
C) A gas exerts the same pressure on each part of a container's wall.
D) A gas has mass.
Power is
A) work divided by time.
B) velocity multiplied by time.
C) momentum divided by time.
D) energy multiplied by time.
Which of the following statements isfalse?
A) Sills are discordant rock bodies.
B) Sills are formed from magma.
C) Sills are tabular in shape.
D) Sills consist of intrusive igneous rock.
An atom or chemical combination of atoms with a net electric charge is called a(n)
______________.
Before it was found that when a substance burns, it is combining with oxygen, it was
hypothesized that the burning material released a substance called ______________.
The energy balance in a thermodynamic process is expressed in the ______________.
The metric system is a(n)____________ system.
The two types of mechanical energy are ______________ and ______________.
Solids emitted by volcanoes can range in size from fine dust to boulders. Such solids
are known collectively as ______________.
Complete the equation: *______________
If the energy of n= 6 is "0.378 eV and that of n= 4 is "0.850 eV in a hydrogen atom, a
transition from n= 6 to n= 4 will emit a photon of what energy?
A sound wave in air travels at a speed of 340 m/s. If the wavelength is 0.100 m, in what
range of the sound spectrum is the wave?
The moons of Mars are ______________; that is, they always keep the same face
toward the planet.
The rock on the upper side of an inclined fault plane is called the hanging wall, and the
rock on the underside is called the ______________.
Draw the structural formula for glycine, the simplest amino acid.
a = F/m is a statement of ______________.
A moving electric charge or a current in a magnetic field may experience a(n)
______________.
A(n) ______________ is equivalent to 3.26 light-years.
A loop-like bend in a river channel is called a(n) ______________.
A wave in which the particle displacement is parallel to the wave motion is called a(n)
______________ wave.
