By definition, the removal of oxygen from a compound is called
A) neutralization.
B) reduction.
C) oxidation.
D) displacement.
The far side of the Moon
A) has never been seen.
B) has more craters than the near side.
C) looks just like the near side.
D) is always dark.
A golfer hits a ball on a level fairway at an angle of 35 relative to the horizontal, and it
lands on the green. Another golfer hits a ball with the same speed but at an angle of 55,
and it lands on the green by the other ball. Which statement is accurate for this
situation?
A) One ball is in the air longer than the other.
B) One ball experiences a greater acceleration while in free flight.
C) One ball experiences a smaller acceleration while in free flight.
D) Two balls hit at the same speed but different angles will always land in the same
location.
E) Two balls hit at the same speed but different angles can never land in the same
location.
How many constitutional isomers that are dibromoethanes exist?
A) 3
B) 4
C) 5
D) 2
E) 6
An object of mass 6 kg has a speed of 4 m/s and moves a distance of 2 m. What is its
kinetic energy in joules?
A) 48
B) 24
C) 17
D) 12
Most earthquake damage is caused by
A) tsunamis.
B) surface waves.
C) P waves.
D) S waves.
An object is placed 10 cm to the left of a converging spherical lens. The lens has a focal
length of f= 25 cm. Where is the image formed?
A) 7.1 cm to the right of the lens
B) 7.1 cm to the left of the lens
C) 17 cm to the right of the lens
D) 17 cm to the left of the lens
In which of the following compounds would hydrogen bonding not be expected among
the molecules?
A) NH3
B) CH4
C) H2O
D) HF
An ideal gas is confined to a container with an adjustable volume. If the number of
molecules and the temperature are held constant, by what factor will the volume change
when the pressure is quintupled?
A) 25
B) 0.2
C) 0.04
D) 5
Remanent magnetism is present in rocks that contain the mineral named
A) magnetite.
B) quartz.
C) hematite.
D) calcite.
If the magnitude difference between one star and another is 5, the stars differ in
brightness by a factor of
A) 2.51.
B) 10.
C) 4.
D) 100.
Take a cup of water, add sugar, and stir. Continue adding sugar and stirring until the
sugar crystals no longer dissolve. Then apply heat to dissolve the remaining crystals. If
the resulting solution is allowed to slowly cool, the solution is said to be
A) an unsaturated solution.
B) a saturated solution.
C) a supersaturated solution.
D) none of these.
The fast, downslope movement of large blocks of weathered materials is known as a
A) solifluction.
B) slump.
C) rock flow.
D) landslide.
Twelve hours of daytime and twelve hours of nighttime occur at every location on Earth
whenever the Sun reaches the
A) north or south celestial pole.
B) celestial prime meridian.
C) vernal or autumnal equinox.
D) ecliptic.
Earth’s inner core is
A) liquid.
B) part solid and part liquid.
C) solid.
D) molten.
Light can travel to Earth from a distant star, but sound cannot. Why is this?
A) Light is an electromagnetic wave, and sound requires a medium.
B) The Sun does not make sound.
C) Light is a longitudinal wave, and sound is a transverse wave.
D) The statement is false; both light and sound can travel in empty space.
The study of rocks is called
A) petrology.
B) mineralogy.
C) paleontology.
D) geology.
Element A, mass 5.00 g, reacts exactly with 2.00 g of element B to form 7.00 g of
compound AB. If 10.00 g of element A are reacted with 2.00 g of element B to form the
same compound, what mass of compound AB will be formed?
A) 7.00 g
B) 5.00 g
C) 17.00 g
D) 12.00 g
Which of the Galilean moons has volcanic activity?
A) Io
B) Europa
C) Ganymede
D) Callisto
An automobile travels due north with a constant speed of 76 km/h. All forces
considered, the unbalanced force acting on the auto is
A) zero.
B) southward.
C) northward.
D) downward.
E) upward.
The region of the electromagnetic spectrum with frequencies just greater than those in
the microwaves region is the ______________ region.
A) infrared
B) ultraviolet
C) x-rays
D) gamma rays
E) visible
The preferred name for N2O (commonly called nitrous oxide) is
A) nitrogen(II) oxide.
B) nitric acid.
C) nitric oxide.
D) dinitrogen oxide.
The name of which astronomer is most closely linked with that of Ejnar Hertzsprung?
A) Johannes Kepler
B) Henrietta Leavitt
C) Henry Russell
D) Edwin Hubble
When the equation Al + O2Al2O3is balanced, the coefficient of Al2O3is
A) 1
B) 2
C) 3
D) 4
An altocumulus cloud belongs to which cloud family?
A) Low
B) Clouds of vertical development
C) High
D) Middle
The remaining core of a planetary nebula is called a _______________.
A) white dwarf
B) neutron star
C) black hole
D) red giant
The reaction is an example of
A) fission.
B) alpha emission.
C) naturally occurring neutron decay.
D) fusion.
A faint white dwarf that temporarily increases in brightness as a consequence of nuclear
explosions on its surface is termed
A) a nova.
B) a Type II supernova.
C) a bright nebula.
D) a red giant.
What electric charge is characteristic for an ion of F?
A) 7+
B) 0
C) 1″
D) 1+
Which of the following is the hardest mineral?
A) Quartz
B) Diamond
C) Talc
D) Gypsum
The process of melting lead is an example of
A) a physical change.
B) a chemical change.
C) a physical property.
D) a chemical property.
Storms
A) develop as a consequence of frontal activity.
B) are atmospheric disturbances.
C) develop within a single air mass.
D) all of the above
The “X” in X-ray stands for ______________.
Snowstorms accompanied by high winds and low temperatures are called
______________.
The half-life of is 14 min. How many minutes would it take for the activity of a
sample of this radionuclide to decrease from 1200 cpm to 150 cpm?
In general, the speed of sound increases as the density of a medium _____________.
The major credit for the development of the periodic table goes to a scientist named
______________.
Albedo changes may result from ______________ pollution.
A wind vane points in the direction ______________ the wind is blowing.
Proxima Centauri, the nearest star to the Sun, exhibits an annual parallax of 0.76 arcsec.
Determine the distance to Proxima Centauri in parsecs.
Earth’s atmosphere is 78% ______________.
A wave in which the particle displacement is perpendicular to the wave motion is called
a(n) ______________ wave.
An alcohol is distinguished by having one or more ______________ groups in the
molecule.
The planet ______________ has retrograde motion.
The speed of light in a particular transparent medium is 5/8 the speed of light in a
vacuum. What is the index of refraction of the material?
Isotopes of the element named ______________ probably will be the fuel for the first
commercial fusion reactors.
A stone is dropped from a bridge 15 m above a river. With what speed does the stone hit
the water?
A common property used to measure temperature is the ______________ of materials.