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Suppose a truck is pulling a trailer. Which object is doing work on the other? a. Truck b. Trailer c. Both
d. Neither - CORRECT ANSWER -a. Truck
Consider a water skier being pulled by a rope attached to a boat. Which statement is true? a. The skier is doing work. b. Work is being done on the skier. c. Neither
d. Both - CORRECT ANSWER -b. Work is being done on the skier.
What type of energy does an airplane have due to its speed? a. Gravitational (GravE) b. Kinetic (KinE) c. Thermal (ThermE) d. Chemical (ChemE)
e .Nuclear (NuclE) - CORRECT ANSWER -b. Kinetic (KinE)
What type of energy does an airplane have due to its altitude? a. Gravitational (GravE) b. Kinetic (KinE) c. Thermal (ThermE) d. Chemical (ChemE)
e .Nuclear (NuclE) - CORRECT ANSWER -a. Gravitational (GravE)
What type of energy does an airplane have due to its fuel? a. Gravitational (GravE) b. Kinetic (KinE) c. Thermal (ThermE) d. Chemical (ChemE)
e .Nuclear (NuclE) - CORRECT ANSWER -d. Chemical (ChemE)
What type of energy does an airplane have due to its temperature? a. Gravitational (GravE) b. Kinetic (KinE)
c. Thermal (ThermE) d. Chemical (ChemE)
e .Nuclear (NuclE) - CORRECT ANSWER -c. Thermal (ThermE)
From an energy standpoint, what happens when a set of keys falls toward the ground? a. Gravitational energy is completely destroyed. b. Kinetic energy is created from nothing. c. Gravitational energy is converted to kinetic.
d. Kinetic energy is converted to gravitational. - CORRECT ANSWER -c.
Gravitational energy is converted to kinetic. From an energy standpoint, what happens when a bowler rolls a bowling ball? a. KinE in the ball is created from nothing. b. ChemE in the bowler is completely destroyed. c. ChemE in the bowler is converted to KinE and transferred to the ball.
d. KinE in the ball is converted to ChemE and transferred to the bowler. - CORRECT
ANSWER -c. ChemE in the bowler is converted to KinE and transferred to the ball.
Suppose a book is sliding on a level table and slowing down because of friction. Which type of energy conversion is taking place? a. Gravitational to Thermal b. Thermal to Gravitational c. Thermal to Kinetic d. Kinetic to Thermal e. Kinetic to Gravitational
f. Gravitational to Kinetic - CORRECT ANSWER -d. Kinetic to Thermal
Suppose you throw a ball upward. While the ball is in the air and still moving upward, it is slowing down. Which type of energy conversion is taking place? You can neglect the effects of air resistance. a. Gravitational to Chemical b. Chemical to Gravitational c. Chemical to Kinetic d. Kinetic to Chemical e. Kinetic to Gravitational
f. Gravitational to Kinetic - CORRECT ANSWER -e. Kinetic to Gravitational
Suppose you throw a ball upward. While the ball is in the air and on its way down, it is speeding up. Which type of energy conversion is taking place? You can neglect the effects of air resistance. a. Gravitational to Chemical b. Chemical to Gravitational c. Chemical to Kinetic d. Kinetic to Chemical
Suppose you are launching yourself (jumping) off the ground. Which of the following is true? a. You are doing work on the ground. b. The ground is doing work on you. c. Both.
d. Neither. - CORRECT ANSWER -d. Neither.
Who is doing more work? a. A weightlifter who takes 1 second to lift a weight b. A weightlifter who takes 2 seconds to lift the same weight the same distance
c. Neither - CORRECT ANSWER -c. Neither
Who is exerting more power? a. A weightlifter who takes 1 second to lift a weight b. A weightlifter who takes 2 seconds to lift the same weight the same distance
c. Neither - CORRECT ANSWER -a. A weightlifter who takes 1 second to lift a
weight Suppose you throw a rock. After it hits the ground and comes to a stop, what happened to the energy you gave it? a. It was converted to chemical. b. It was converted to gravitational. c. It was converted to thermal.
d. It was destroyed. - CORRECT ANSWER -c. It was converted to thermal.
Which of the following is not a valid way of stating the 2nd Law of Thermodynamics? a. The total entropy of the Universe increases with time. b. The total entropy of an organism increases with time. c. Thermal energy flows spontaneously from high temperature to low temperature. Ad. heat engine cannot be 100% efficient.
Your body temperature is about 98.6°F. - CORRECT ANSWER -b. The total
entropy of an organism increases with time. Suppose you jump into a body of water with a temperature of 50°F. Which way does thermal energy flow? a. Into your body b. Into the water c. Both
d. Neither - CORRECT ANSWER -b. Into the water
The Theory of Evolution says that species evolve with time. The species of today are much more complex than the species of 3 billion years ago. Does the Theory of Evolution violate the 2nd Law of Thermodynamics? a. Yes, because the entropy of a species must increase with time.
b. No, because organisms dump their entropy into the environment. - CORRECT
ANSWER -b. No, because organisms dump their entropy into the environment.
Consider a person pushing a wall. Who or what is doing work? a. Person b. Wall c. Both
d. Neither - CORRECT ANSWER -d. Neither
If a car is speeding up, what is doing work on it? Consider the car and its combusting gasoline to be separate objects. a. The car itself b. The ground c. The combusting gasoline
d. Nothing - CORRECT ANSWER -c. The combusting gasoline
Which does more work? a. Jack A, which lifts a car b. Jack B, which takes twice the time to lift the same car the same distance
c. Neither - CORRECT ANSWER -c. Neither
Which exerts more power? a. Jack A, which lifts a car b. Jack B, which takes twice the time to lift the same car the same distance
c. Neither - CORRECT ANSWER -a. Jack A, which lifts a car
Protons are positively charged. How would the electric force cause two protons to behave? a. They would be attracted. b. They would be repelled.
c. Neither. - CORRECT ANSWER -b. They would be repelled.
Electrons are negatively charged. How would an electron and a proton interact? a. They would be attracted. b. They would be repelled.
c. Neither. - CORRECT ANSWER -a. They would be attracted.
Suppose an oxygen atom has 8 protons, 8 neutrons, and 8 electrons. How would it be classified? a. Positive ion b. Negative ion
c. Neutral ion - CORRECT ANSWER -c. Neutral ion
Consider a jumping kangaroo. Its feet are still on the ground but it is pushing upward. Which object is doing work on the other? a. The kangaroo is doing work on the ground. b. The kangaroo is doing work on itself. c. The ground is doing work on the kangaroo.
d. None of these - CORRECT ANSWER -d. None of these
Which type of material has electrons that are NOT tightly bound to atoms? a. Insulator
b. Conductor - CORRECT ANSWER -b. Conductor
In what type of current do electrons flow in one direction only? a. DC
b. AC - CORRECT ANSWER -a. DC
If you increase the voltage across a circuit, what will happen? a. Resistance will decrease. b. Resistance will increase. c. Current will decrease.
d. Current will increase. - CORRECT ANSWER -d. Current will increase.
How does a resistor transform energy? a. From electric to gravitational b. From gravitational to electric c. From electric to thermal
d. From thermal to electric - CORRECT ANSWER -c. From electric to thermal
The ampere (or amp) is a unit of... a. Electric potential b. Energy c. Charge d. Current
e. Power - CORRECT ANSWER -d. Current
A watt is a unit of... a. Electric potential b. Energy c. Charge d. Current
e. Power - CORRECT ANSWER -e. Power
What is the electric charge on a proton? a. +1 C b. +1 e
c. 0 d. -1 e
e. -1 C - CORRECT ANSWER -b. +1 e
All oxygen atoms have 8 protons. Suppose an oxygen ion has 5 electrons. What is its charge? a. -8 e b. -5 e c. -3 e d. 0 e. +3 e f. +5 e
g. +8 e - CORRECT ANSWER -e. +3 e
What kind of wave travels longways through a Slinky? a. Longitudinal b. Transverse
c. Both - CORRECT ANSWER -a. Longitudinal
What kind of wave is light? a. Longitudinal
b. Transverse - CORRECT ANSWER -b. Transverse
What is light? a. Particle b. Wave c. Both
d. Neither - CORRECT ANSWER -c. Both
What medium carries light waves? a. Electric field b. Magnetic field c. Both
d. Neither - CORRECT ANSWER -c. Both
Radio waves have a longer wavelength than X-rays. What does that tell us about frequency? a. Radio waves have a higher frequency than X-rays. b. X-rays have a higher frequency than radio waves. c. X-rays and radio waves have the same frequency.
d. More information is needed. - CORRECT ANSWER -b. X-rays have a higher
frequency than radio waves. Red light has a longer wavelength than blue. What does that tell us about speed?
d. There isn't. Science is a hoax. - CORRECT ANSWER -a. CFC's
Which of the following is NOT a greenhouse gas? a. Water vapor (H2O) b. Carbon dioxide (CO2) c. Methane (CH4)
d. Oxygen (O2) - CORRECT ANSWER -d. Oxygen (O2)
Which of the following greenhouse gases contributes most to regulating changes in global climate? a. Water vapor b. Carbon dioxide
c. Methane - CORRECT ANSWER -b. Carbon dioxide
On Feb. 10, 2011, the temperature in Fayetteville reached a record low of -18ºF. Did this cold snap disprove global warming? a. Yes, the global waring models predict warm winters everywhere on the planet every year. b. No, global warming only refers to the average temperature of the oceans. -
CORRECT ANSWER -b. No, global warming only refers to the average
temperature of the oceans.
