While driving down the highway a lovebug spatters onto your windshield. Which
undergoes the greater impulse?
A) the lovebug
B) your car
C) both the same
Answer:
All continental landmasses joined together as Pangaea resulted in
A) a reduction in shallow marine habitats.
B) a long duration of high sea level.
C) an increase of seafloor spreading.
D) increased species diversification.
Answer:
When a shower is turned on, the shower curtain moves towards the water spray. This
partly involves
A) capillary action.
B) surface tension.
C) pressure changes in moving fluids.
D) none of the above
Answer:
Rust has a tendency to form when iron in contact with water reacts according to the
following reaction:
4 Fe + 3 O2 → 2 Fe2O3
What is happening at the anodic region?
A) Iron is being oxidized.
B) Oxygen is being oxidized.
C) Oxygen is being reduced.
D) Iron is being reduced.
E) none of the above
Answer:
A 1-kg ball is thrown straight up at 10 m/s. Neglecting air resistance, the net force that
acts on the ball when it is halfway to the top of its path is
A) 1/2 N.
B) 1 N.
C) 5 N.
D) 7.5 N.
E) 10 N.
Answer:
“Sympathetic vibrations” refers to
A) beats.
B) interference.
C) pitch.
D) resonance.
Answer:
Compared with a mercury barometer, the column height for a water barometer would be
A) lower.
B) higher.
C) the same.
Answer:
The amount of light from an incandescent lamp that is transmitted through an ideal
Polaroid filter is half, and through a real Polaroid filter is
A) less than half.
B) more than half.
C) half.
Answer:
Distant dark-colored hills appear blue due to the color of the
A) atmosphere between the observer and the dark hills.
B) selectively reflected light that reaches a distant observer.
C) reflected light that survives scattering.
D) sky that is reflected off the hills.
Answer:
Identify the acid or base behavior of each substance in these reactions:
+ ⇌O + HCl
A) acts as an acid, acts as a base, O acts an acid, HCl acts as a base.
B) acts as an base, acts as a acid, O acts an acid, HCl acts as a base.
C) acts as an acid, acts as a base, O acts an base, HCl acts as a acid.
D) acts as an base, acts as a acid, O acts an base, HCl acts as an acid.
Answer:
Which would you expect to have a higher melting point: sodium chloride, NaCl, or
aluminum oxide, ?
A) The aluminum oxide has a higher melting point because it is a larger molecule and
has a greater number of molecular interactions.
B) NaCl has a higher melting point because it is a solid at room temperature.
C) The aluminum oxide has a higher melting point because of the greater charges of the
ions, and hence the greater force of attractions between them.
D) The aluminum oxide has a higher melting point because of the covalent bonds
within the molecule.
Answer:
Which of the following elements are in the same period as magnesium (Mg)?
A) Cl
B) Ca
C) Mn
D) Sr
E) none of the above
Answer:
When evaporation rate equals the condensation rate, the air is
A) humid.
B) super-saturated.
C) at its water-vapor capacity.
D) cool, with decreasing relative humidity.
Answer:
What molecule loses a proton to form the hydroxide ion, OH ?⁻
A) the oxygen molecule,
B) the water molecule, O
C) the hydrogen peroxide molecule,
D) the hydrogen molecule,
Answer:
How are intermolecular forces and solubility related?
A) Solubility depends on the solvent’s ability to overcome the intermolecular forces in a
solid.
B) Solubility depends on the solute’s ability to overcome the intermolecular forces in
the solvent.
C) Solubility is a measure of how strong a solvent’s intermolecular forces are.
D) Solubility is a measure of how weak the intermolecular forces in the solute are.
E) none of the above
Answer:
The acceleration of a rocket increases as it travels upward from the ground mainly
because
A) gravity becomes weaker with increased distance.
B) the applied force on the rocket increases as fuel is burned.
C) the mass of the rocket decreases as fuel is burned.
Answer:
When a rock thrown straight up reaches the exact top of its path, its velocity is
A) zero and its acceleration is zero.
B) zero and its acceleration is 10 m/s2.
C) about 10 m/s and its acceleration is zero.
D) about 10 m/s and its acceleration is 10 m/s2.
Answer:
As rising air cools, its ability to accommodate water vapor decreases so the
A) relative humidity of the rising air decreases.
B) adiabatic rate stabilizes.
C) air becomes more wet.
D) relative humidity of the rising air increases.
Answer:
The theory of seafloor spreading is supported by
A) geological, biological, and climatological data.
B) paleomagnetic analysis of the ocean’s floor.
C) the change in Earth’s polarity.
D) none of these
Answer:
Wind blowing over the top of a hill
A) increases atmospheric pressure there.
B) decreases atmospheric pressure there.
C) has no affect on atmospheric pressure there.
Answer:
Shield volcanoes are composed of
A) andesitic magma.
B) basaltic magma.
C) granitic magma.
D) silica-rich magma.
Answer:
In a flat universe parallel lines
A) never converge.
B) are concentric to each other.
C) are mirror images.
D) eventually meet.
Answer:
The number of nodes in a standing wave of three wavelengths, not including the
endpoints, is
A) 2.
B) 3.
C) 4.
D) 5.
E) 6.
Answer:
The stress that occurs when material is pulled apart is called
A) compressional stress.
B) tensional stress.
C) shear stress.
D) simple stress.
Answer:
Towering cumulonimbus clouds are a common feature in regions where moist unstable
air is heated from below. Such clouds are produced by
A) convectional lifting.
B) orographic lifting.
C) frontal lifting.
D) none of these
Answer:
The time required for one-half of a radioactive material to decay is called the
A) absolute age.
B) half-life.
C) date age.
D) true-life.
Answer:
If a monkey floating in outer space throws his hat away, the hat and the monkey will
both move
A) away from each other, but at different speeds.
B) away from each other at the same speed.
C) a short distance and then slow down.
D) a short distance and then gain speed.
E) quickly to a stop.
Answer:
Which explanation best describes why Earth observers always see the same face of the
moon?
A) The Moon’s rate of spin matches the rate at which the Moon revolves around Earth.
B) The Moon does not rotate as it circles Earth.
C) We tend only to observe the Moon at night, not during the day.
D) Earth and Moon are partially gravity locked.
Answer:
If you need 3.01 1023 molecules of sucrose, how many liters of a 4.00 molar solution
would you need?
A) 0.125 L
B) 0.250 L
C) 4.00 L
D) 1.00 L
E) none of the above
Answer:
The type of fossilization that occurs when the remains of an organism are replaced by
mineral matter is called
A) carbonization.
B) replacement.
C) an impression.
D) a cast.
Answer: