A spinning cloud of interstellar gas tends to
A) disperse.
B) flatten.
C) turn into a sphere.
D) condense.
Answer:
An object travels 8 m in the 1st second of travel, 8 m again during the 2nd second of
travel, and 8 m again during the 3rd second. Its acceleration is
A) 0 m/s2.
B) 5 m/s2.
C) 8 m/s2.
D) 10 m/s2.
E) more than 10 m/s2.
Answer:
When a battery does 24 J of work on 10 C of charge, the voltage it supplies is
A) 2.4 V.
B) 4.2 V.
C) 24 V.
D) 240 V.
E) none of the above
Answer:
The fundamental frequency of a violin string is 440 hertz. The frequency of its second
harmonic is
A) 220 hertz.
B) 440 hertz.
C) 880 hertz.
D) none of the above
Answer:
Science, art, and religion need not contradict one another because
A) all three operate in different domains.
B) choosing the correct one allows you can forget the other two.
C) choosing religion and art allows you to dismiss science.
D) choosing science means that you can forget about religion and art.
Answer:
The source of all wave motion is
A) a wave pattern.
B) a harmonic object.
C) something vibrating.
D) a region of variable high and low pressure.
E) none of the above
Answer:
A sedimentary rock can turn into an igneous rock by
A) compaction and cementation.
B) compaction.
C) melting and cooling.
D) weathering and lithification.
Answer:
The temperature of water rises when 2.00 calories are added. It will rise the same when
A) 4.19 J are added.
B) 8.38 J are added.
C) 83.4 J are added.
Answer:
The process of convection occurs in
A) solids.
B) liquids.
C) gases.
D) fluids.
E) none of the above
Answer:
Secondary waves can travel through all areas of Earth except the
A) surface.
B) outer core.
C) inner core.
D) mantle.
Answer:
A black hole is
A) an empty region of space with a huge gravitational field.
B) a small region that has the mass of many galaxies.
C) the remains of a giant collapsed star.
Answer:
What is the lowest level to which water can erode land?
A) sea level
B) the bottom of the stream channel
C) the level of the delta
D) none of the above
Answer:
Identical waves superimposed out of phase produce a wave of decreased
A) amplitude.
B) frequency.
C) wavelength.
D) all of the above
E) none of the above
Answer:
Some older cars vibrate loudly when driving at particular speeds. For example, at 65
mph the car may be most quiet, but at 60 mph the car rattles uncomfortably. How is this
analogous to the quantized energy levels of an electron in an atom?
A) A car is designed for maximum performance at particular speeds under given road
conditions. Likewise, electron energy level transitions are smooth if they occur while
the atom is in a low energy state. Changing the speed of the car for the road conditions
is similar to subjecting the atom to unusual energy conditions.
B) New cars and small atoms don’t share this behavior because modern technology
produces better cars and small atoms don’t have enough electrons to move among
quantized energy levels to cause vibration.
C) The vibrating car is analogous to one of the energy levels of the electron, which is
the point at which the electron experiences resonance.
D) There can be no analogy between a vibrating car and the quantized energy level of
an electron in an atom since electrons don’t vibrate. Doing so would cause the atom to
break apart.
Answer:
The water table is found at the top of the
A) contact between an aquifer and an underlying, impermeable rock.
B) zone of aeration.
C) zone of saturation.
D) permeability zone.
Answer:
A volume of helium gas has a temperature of 0C. The same gas twice as hot has a
temperature of
A) 0C.
B) 2C.
C) 100C.
D) 273C.
E) none of the above
Answer:
The direction of natural processes is from states of
A) higher order to lower order.
B) lower order to higher order.
C) disorganization to organization.
D) imbalance to equilibrium.
Answer:
If the frequency of a certain wave is 10 Hz, its period is
A) 0.1 s.
B) 10 s.
C) 100 s.
D) none of the above
Answer:
Coastal lands bordering the oceans generally have
A) colder temperatures than lands away from the ocean.
B) more moderate temperature variations than inland areas.
C) more scenery than land in the continental interior.
D) tropical temperatures due to the high heat capacity of water.
Answer:
Is it at all possible for a hydrogen nucleus to emit an alpha particle?
A) yes, because alpha particles are the simplest form of radiation
B) no, because it would require the nuclear fission of hydrogen, which is impossible
C) yes, but it does not occur very frequently
D) no, because it does not contain enough nucleons
Answer:
Earth’s earliest atmosphere was most likely composed of hydrogen, helium,
A) oxygen, and nitrogen.
B) methane, and nitrogen.
C) methane, and ammonia.
D) oxygen, and ozone.
Answer:
The thickness of Earth’s crust
A) varies from 10 km under the continents to 60 km under the oceans.
B) on average is about 10 km.
C) on average is about 60 km.
D) varies from 10 km under the oceans to 60 km under the continents.
Answer:
The sloshing of electrons inside a generator needs
A) an outside source of energy.
B) a copper lattice.
C) positive ions.
D) none of the above
Answer:
The largest volumes of magma extruded on the continents are
A) flood and plateau basalts.
B) central-vent type volcanoes.
C) batholiths.
D) from volcanoes with a high silica content.
Answer:
Which of the following molecules contains a phenol?
A) a
B) b
C) c
D) b and c
E) all of them
Answer:
What is molarity?
A) the number of moles of solute per liter of solution
B) the number of grams of solute per liter of solution
C) the number of moles of solute per liter of solvent
D) the number of liters of solute per mole of solution
E) none of the above
Answer:
Waves emitted by the Sun and terrestrial wave emissions are
A) the same except for their frequencies and wavelengths.
B) entirely different kinds of waves.
C) identical.
Answer:
A weather map has many symbols and lines. Isobars are lines that
A) depict wind speed and direction.
B) connect points of equal temperature.
C) connect points of equal pressure.
D) none of the above
Answer:
If it takes 20 beryllium atoms to equal the mass of two krypton atoms, what is the
relative mass of beryllium compared to krypton?
A) 1/10
B) 1/20
C) 40 times
D) 100 times
E) 10 times
Answer:
Sand dunes form as wind
A) disperses sand.
B) blows sand from the back to the front of the dune.
C) blows sand from the front to the back of the dune.
D) interrupts the normal sequence of deposition.
Answer:
Fossils can be used to determine the relative age of rock layers because they are
A) found in a definite order.
B) deposited horizontally, one fossil at time.
C) radioactive.
D) found in sedimentary rocks.
Answer: