The celestial prime meridian is an imaginary half-circle running from the north celestial
pole to the south celestial pole and crossing perpendicular to the celestial equator at the
point of the
A) autumnal equinox.
B) summer solstice.
C) vernal equinox.
D) winter solstice.
Standing waves can be set up in a string when two waves that are
A) of the same frequency and amplitude, but are opposite in direction of travel, meet
each other.
B) of the same frequency, amplitude, and direction of travel are also 180 out of phase.
C) of the same frequency, amplitude, and direction of travel meet each other.
D) of the same frequency, amplitude, and velocity meet each other.
Which of the following has the largest albedo?
A) Water
B) Polar ice
C) Fresh snow
D) Dry sand
E) Dark soil
The greater the frequency of light, the greater the ______________ of its photons.
A) velocity
B) speed
C) wavelength
D) energy
The periodic table is most easily understood in terms of the ______________
configurations of the elements.
A) periodic
B) proton
C) neutron
D) electron
The study of fossils is called
A) cryptology.
B) petrology.
C) paleontology.
D) historical biology.
The smallest major planet in the solar system lacks
A) a surface.
B) a solid surface.
C) a moon.
D) a gravitational field.
Ohm’s law gives the relationship between
A) current and voltage.
B) work and current.
C) current and charge.
D) force and current.
One microgram (μg) contains how many grams?
A) 10-3
B) 10-6
C) 10-9
D) 103
Dripstone formations that form on cavern ceilings are called _____________.
A) stalactites
B) stalagmites
C) quartz
D) feldspar
A pair of electrons shared by two atoms forms
A) a metallic bond.
B) a double covalent bond.
C) a single covalent bond.
D) an ionic bond.
About 85% by mass of Earth’s core is composed of the element(s)
A) iron
B) nickel
C) oxygen.
D) silicon.
E) iron and nickel.
The “horns” of the crescent moon point
A) always away from the Sun.
B) in random directions.
C) down toward Earth.
D) always away from Earth.
Which of the following has the highest thermal conductivity?
A) Air
B) A newspaper
C) A rug
D) An aluminum saucepan
A tropical storm becomes a hurricane when its wind speed reaches
A) 50 mi/h.
B) 120 mi/h.
C) 74 mi/h.
D) 100 mi/h.
Enriched uranium is a better nuclear reactor fuel than natural uranium because enriched
uranium contains a greater proportion of
A) 239Pu.
B) 235U.
C) 238U.
D) 2H.
All the following may be represented by vectors except
A) velocity.
B) acceleration.
C) speed.
D) displacement.
The Sun’s photosphere is, by mass, about 25%
A) helium.
B) carbon.
C) hydrogen.
D) oxygen.
By definition, the universe consists of
A) all energy only.
B) all space only.
C) all matter only.
D) all of the above.
An important agent in chemical weathering is
A) carbonic acid.
B) permafrost.
C) wind.
D) frost.
An automobile’s acceleration may be changed by using the
A) windshield wipers.
B) steering wheel.
C) radio.
D) horn.
The equation 4H2O24H2O + 2O2is not appropriately written because
A) oxygen is not diatomic.
B) fractional coefficients are not generally used.
C) the number of atoms of each element on each side is not the same.
D) the simplest set of coefficients has not been used.
If a positively charged object is brought near a suspended, negatively charged object,
the suspended object will be
A) repelled.
B) charged more.
C) discharged.
D) attracted.
The region of the electromagnetic spectrum with wavelengths just greater than those in
the microwaves region is the ______________ region.
A) radio waves
B) ultraviolet
C) x-rays
D) gamma rays
E) visible
The brightest object in the sky is
A) the Sun.
B) the Moon.
C) Venus.
D) Mars.
Seafloor spreading occurs along ______________.
A) fault lines
B) subduction zones
C) mid-ocean ridges
D) none of these
If the magnitude of the velocity of an object increases, we may be sure that during the
time of this increase,
A) the object is accelerated.
B) the acceleration of the object increases.
C) the object is moving in a straight path.
D) the object is changing direction.
E) none of these
Acids give what ions in aqueous solutions?
A) SO4
2-
B) Cl–
C) OH–
D) H+
The angle of incidence of a light wave is
A) different depending on whether there is diffuse or specular reflection.
B) measured from a normal to the surface.
C) equal to the angle of refraction.
D) measured relative to the surface of the material.
An atom that has more protons than electrons is a ______________ ion.
A) neutral
B) positive
C) negative
D) polyatomic
Which answer is incorrect? A base is a substance that, when dissolved in water,
A) reacts with an acid to neutralize its properties.
B) reacts with many metals to liberate O2.
C) changes the color of litmus dye from red to blue.
D) conducts electricity.
The vertical columns in the periodic table are called ______________.
The parallel that is a great circle is the ______________.
Fossilized tree resin is called ______________.
A(n) ______________ fault occurs as the result of expansive forces.
The physical characteristic that is used to distinguish intrusive igneous rocks from
extrusive igneous rocks is _____________.
For a period after June 21, in Hawaii sunrise occurs ______________ each day.
CH3CH2OH is the structural formula for the compound named ______________.
Solar system space is occupied by very small, solid particles that are called
______________.
Volcanoes are so numerous along the margins of the Pacific Ocean that the region has
been dubbed the ______________.
Ideally, the wind direction is ______________ to isobars.
Earth’s radius is about ______________ mi.
A speedometer registers ______________.
The place, or zone, where one plate descends under another plate and into the
asthenosphere is called a(n) ______________ zone.
Group ______________A elements have two valence electrons.