According to the Schrdinger equation, the probability of finding a hydrogen atom’s
ground-state electron 0.053 nm from the proton is
A) zero.
B) high, but not 100%.
C) low, but not zero.
D) 100%.
Except for hydrogen and helium, atoms in chemical combination tend to have
______________ electrons in their outer shell.
A) 8
B) 14
C) 6
D) 2
Breaks, or gaps, in the rock record at a given locality are called
A) unconformities.
B) preconformities.
C) nonconformities.
D) disconformities.
A radar pulse returns 6.0 x 10-4 s after it was sent out and reflected by an object. What
is the separation distance of the radar source and the object?
A) 1.8 x 105m
B) 9 x 104m
C) 1.1 x 10“3m
D) 5.6 x 10“4m
One product of photosynthesis is
A) hydrogen.
B) oxygen.
C) carbon dioxide.
D) methane.
Rocks that formed from the cooling of molten material are classified as
A) discordant.
B) metamorphic.
C) sedimentary.
D) igneous.
The Paleocene is a(n)
A) epoch.
B) era.
C) eon.
D) period.
Match the general formula with the name of the class.
______ a. esters 1. ROH
______ b. carboxylic acids 2. RCOOR
______ c. amides 3. RX
______ d. amines 4. RCOOH
______ e. alcohols 5. RNH2
______ f. alkyl halides 6. RCONHR
Living next to a lake near volcanic activity can be deadly. There can be large amounts
of CO2 dissolved in the water. An earthquake, landslide, or even rapid cooling can
trigger the release of the CO2, causing death nearby. The water of the lake in these cases
is
A) an unsaturated solution.
B) a saturated solution.
C) a supersaturated solution.
D) a completely unsaturated solution.
What elementary particle has no charge, travels at or near the speed of light, and hardly
ever interacts with other particles?
A) Positron
B) Plasmon
C) Deuteron
D) Neutrino
Which of the following could be the molecular formula for an alkane?
A) C3H3
B) C5H10
C) C6H11
D) C8H14
E) C7H16
An average lapse rate of 2.7 F/1000 ft is equivalent to
A) 1.5 C/m.
B) 4.0 C/1000 ft.
C) 5.0 C/km.
D) 6.5 C/1000 m.
A primary force that produces air motion is
A) gravity.
B) the Coriolis force.
C) friction.
D) the electromagnetic force.
1-Bromobutane and 4-bromobutane are,
A) the same compound.
B) neither isomers nor the same compound.
C) isomers.
The full moon by definition occurs
A) for only a day.
B) for 7-3/8 days.
C) only for an instant.
D) only once every month.
The current definition of a kilogram is the mass of a platinum-iridium cylinder kept in
A) the United States.
B) France.
C) England.
D) Japan.
The tropical year is shorter than the sidereal year because Earth’s
A) orbit is an ellipse rather than a true circle.
B) axis precesses westward.
C) orbital speed is not constant.
D) axis is tilted by 23.5.
The Moon
A) revolves about Earth from west to east.
B) has a day equal to 29.5 Earth days.
C) has an elliptical orbit about Earth.
D) all of these.
How many protons are there in an atom of ?
A) 12
B) 34
C) 23
D) 11
The estimated number of stars in the Milky Way is about how many billion?
A) 1 to 2
B) 100 to 200
C) 10 to 20
D) 1000 to 2000
The Jurassic is a(n)
A) epoch.
B) era.
C) eon.
D) period.
Which one of the following is notan area of physics?
A) Mechanics
B) Optics
C) Algebra
D) Acoustics
When the equation Ga + Br2GaBr3is balanced, the total of all the coefficients (both
written and “understood”) is
A) 4.
B) 3.
C) 6.
D) 7.
Sirius is a binary star, consisting of Sirius A and Sirius B. Sirius B is a
A) red giant.
B) white dwarf.
C) planetary nebula.
D) neutron star.
If work is done on an electric charge, a ______________ is present.
A) resistance
B) current
C) voltage
D) transformer
E) bigger charge
Rain that freezes on striking a cold surface gives rise to a(n) ______________ storm.
A) hail
B) rain
C) ice
D) snow
At which latitude is the noonday Sun overhead only once a year?
A) 10S
B) 23S
C) 4N
D) 30N
The flattened, rotating disk of gas and dust around the protosun, from which planets
were believed to have formed, is called the
A) solar nebula.
B) planetary nebula.
C) condensation nebula.
D) primordial nebula.
Spring tides occur
A) only in March.
B) when Earth, the Moon, and the Sun line up.
C) fewer than 10 times a year.
D) once a month.
The Triassic is a(n)
A) epoch.
B) era.
C) eon.
D) period.
G (big G) is not a(n) ____________, as g (little g) is.
Geologists view the section of Earth called the ______________ as consisting of a
number of close-fitting plates.
The flat, distorted maps of the world are _____________.
The common name for NH3 is ______________.
The symbol for the element whose atoms contain 28 protons is ______________.
The greater the mass of a star, the _______________ it moves through its life cycle.
S seismic waves can travel only through ______________ material.
A set value for a fundamental quantity is called a(n) ______________ unit.
On a trip, a family travels 200 km in 2.5 h on the first day, 300 km in 4.0 h on the
second day, and 250 km in 3.5 h on the third day. What was the average speed, in
kilometers per hour, for the total trip?
The angle measured from the horizon to the line of sight to the celestial object is called
the ______________.
Rain that freezes upon striking a cold surface gives rise to a(n) ______________ storm.
A(n) __________ converts electrical energy into mechanical energy.
Sea lilies are more scientifically called _________________.
Sunlight reflected from interplanetary dust results in the appearance of
______________.
A tornado ______________ is issued when a tornado has been sighted or indicated on
radar.