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Hawaii's weather is chiefly affected by what type of air mass?
A) mA
B) mP
C) cP
D) mT
What was the nationality of the first persons who we know speculated about
"elements"?
A) Chinese
B) Egyptian
C) Greek
D) Roman
Which of the following is the symbol for an alkali metal?
A) Al
B) Cl
C) K
D) Ca
When an unstable Cf nucleus undergoes beta decay, the nucleus formed is that of
A) Cf.
B) Fm.
C) Bk.
D) Cm.
E) Es.
The index of refraction of transparent materials is
A) equal to 1.
B) greater than 1.
C) less than 1.
D) any of these.
The Sun has an apparent magnitude of about
A) minus 1.4.
B) minus 27.
C) 1.4.
D) 15.6.
A common fuel impurity in fossil fuels is
A) sulfur.
B) radon.
C) carbon.
D) hydrogen.
The Alps are examples of which type of mountain?
A) Fold
B) Volcanic
C) Fault-block
D) None of these
The term stimulated emissionwould be used in explaining the operation of
A) an electron microscope.
B) an X-ray tube.
C) a microwave oven.
D) a laser.
When sodium and chlorine react to form sodium chloride, an ionic compound,
A) each sodium atom loses two electrons.
B) each sodium atom loses one electron.
C) each chlorine atom loses one electron.
D) each chlorine atom loses two electrons.
5 steps on the Richter scale represents about how many times more energy?
A) 32000
B) 32000000
C) 31900000
D) 500
What happens to the atomic number (Z) and the mass number (A) when a nucleus emits
an alpha particle?
A) Zincreases by 1; Ais unchanged.
B) Zis unchanged; Ais unchanged.
C) Zdecreases by 2; Adecreases by 4.
D) Zdecreases by 1; Ais unchanged.
The formula mass of water, H2O, is
A) 18 u.
B) 9 u.
C) 10 u.
D) 17 u.
Which of the following could be the molecular formula for an alkene?
A) C7H7
B) C6H12
C) C3H5
D) C3H4
E) C7H16
A tornado ______________ is issued when a tornado has been sighted or indicated on
radar.
A) warning
B) notice
C) advisory
D) ticket
The most modern definition of element is
A) a substance that cannot be further separated by chemical methods.
B) the simplest form of matter.
C) a substance in which all the atoms have the same number of protons.
D) a substance that contains no neutrons.
Only two elements, mercury and ______________, are liquid at room temperature and
atmospheric pressure.
A) sodium
B) bromine
C) phosphorus
D) iodine
Which of the following statements is true of the angles of incidence and reflection?
A) They are not related
B) They can never be equal
C) They are always equal
D) They add to 90.
To which group of polymers does Teflon belong?
A) Natural
B) Hydrolytic
C) Addition
D) Condensation
How many constitutional isomers that are trifluoroethanes exist?
A) 3
B) 2
C) 4
D) 8
E) 5
Which type of reaction is 4Al + 3O22Al2O3?
A) Decomposition
B) Combination
C) Double-replacement
D) Single-replacement
How many valence electrons does an atom of phosphorus have?
A) 15
B) 5
C) zero
D) 3
When the Moon appears on an observer's meridian at 4 A.M., the Moon is in the
______________ phase.
Nimbus means
A) "poorly formed."
B) "curl."
C) "heap."
D) none of these.
Distance covered per unit of time is called
A) speed.
B) acceleration.
C) velocity.
D) displacement.
When an electron in an atom is excited from a lower energy level to a higher one, a
______________ is ______________.
A) proton; absorbed
B) proton; emitted
C) photon; absorbed
D) photon; emitted
What type of faulting results from expansive stresses?
A) Reverse
B) Normal
C) Strike-slip
D) Abnormal
Defects in the subsequent offspring of the recipient of radiation are called
______________ effects.
A) genetic
B) latent
C) somatic
D) threshold
If atoms unite by transfer of electrons, they form
A) an organic compound.
B) an ionic compound.
C) a polar molecule.
D) a covalent compound.
Dispersion occurs in a medium because
A) the index of refraction depends on wave amplitude.
B) of regular reflection.
C) of diffuse reflection.
D) the index of refraction depends on the wavelength.
A Doppler red shift indicates
A) a shift toward higher frequencies.
B) a shift toward shorter wavelengths.
C) that a light source is receding relative to the observer.
D) none of these.
Which of the following Period 4 elements has the largest atom?
A) Kr
B) Ga
C) Ca
D) Br
6.02 x 1023is known as ______________________.
Work is the process by which energy is ______________.
Name four factors that influence the rate of chemical reactions.
The acceleration of an object with a zero net force acting on it is ______________.
In keeping with Newton's second law of motion, if the force acting on a moving object
is doubled, then its ______________ is doubled.
The appearance of a mineral's surface in reflected light is called its ______________.
Kepler's first law states that Earth's orbit around the Sun takes the shape of a(n)
______________.
A 6.0-kg object exerts a force of 8.0 N on a 2.0-kg object. What is the magnitude of the
force on the 6.0-kg object?
The three allotropes of carbon are graphite, the fullerenes, and ______________.
______________ is the study of planet Earth.
The ______________ lies below the stratosphere.
The periods of the Cenozoic era are divided into time units called ______________.
O3 and O2 are the two ______________ of the element oxygen.
A line of equal longitude is called a(n) ______________.
The number of neutrons in a triton is ______________.
