WorksheetsPhysics and Energy Unit Test Review
Total questions: 38
Worksheet time: 22mins
The picture shows an aerialist walking on a tightrope and holding a balancing bar. An action -reaction pair of forces exists between -
the aerialist's feet and the rope
the rope an the balancing bar
the two ends of the rope
the aerialist's arms and legs
A marble is given potential energy by being placed at location W. When the marble is released, it rolls down the track. At which location does the marble have maximum kinetic energy?
location w
location x
location y
location z
Four boxes are sliding with constant speed before each box experiences an unbalanced force of 8N. Which box would experience the greatest acceleration when the unbalanced force is applied?
The box with a mass of 2 kg
The box with a mass of 4 kg
The box with a mass of 6 kg
The box with a mass of 8 kg
Students slid a small wood block along a flat tabletop for a distance of 1.6m. The data show the motion of the block of wood. Which graph displays the motion of the wood block?
A bicycle rider is traveling up a hill. When the rider reaches the top of the hill, she stops to rest. Then she travels down the hill. The diagram shows the rider in the three different positions. Which of these correctly describes the potential energy and kinetic energy of the bicycle rider?
When the rider is at the top of the hill, her potential energy is the greatest, and her kinetic energy is the least.
As the rider is moves up the hill, her kinetic energy increases, and her potential energy decreases.
When the rider goes down the hill, her potential energy increases, and her kinetic energy decreases.
As the rider reaches the bottom of the hill, her kinetic energy and potential energy decrease.
A leaf fell from a tree branch. The path it followed is shown in the diagram. Which of these best describes why the leaf fell in a crooked path instead of straight down?
Objects with irregular shapes never fall in straight lines.
Air currents and gravity applied changing and unbalanced forces to the leaf.
The upward force of the air on the leaf was greater than the downward force of gravity.
Once the leaf was in motion, it continued moving in the same direction because the forces were balanced.
Two students are working together to build a birdhouse. Student 1 applies a force of 10 N to a wooden board in order to slide it across the table to Student 2. If the force of friction resisting the student's push is 4N, what is the net force acting on the board?
4 N
6 N
10 N
14 N
The graph shows the motion of a ball rolling on a straight track. What was the ball's average speed during the time represented in the graph?
0.2 m/s
0.5 m/s
5.0 m/s
10.0 m/s
The list includes six situations. Which objects in the list experience an unbalanced force?
The book, ball, and car
The ball, car, and bird
The can, swing, and bird
The book, ball, can, and swing
A teacher rubbed a match against a piece of sand paper. The match started to burn. Which statement best describes the energy changes that occurred?
The chemical energy stores in the match changed to thermal energy and radiant energy.
The thermal energy stored in the match changed to radiant energy and chemical energy.
The radiant energy and thermal energy stored in the match changed to mechanical energy.
The radiant energy and thermal energy stored in the match changed to chemical energy.
NASA's space shuttle program was active from 1981 until 2011. The photograph shows rockets carrying a space shuttle off the Launchpad. How can Newton's law of action-reaction best be applied to explain the movement of a rocket?
As the fuel burns, gases push against the rocket, moving it upward.
As the fuel burns, gases move out of the rocket and reduce air resistance.
As the fuel burns, the mass of the rocket decreases.
As the fuel burns, the rocket moves faster.
The main parts of a working clothes dryer are shown in the diagram This appliance dries clothes primarily by converting-
electrical energy to thermal and mechanical energy
mechanical energy to thermal and electrical
electrical to thermal and radiant
none of the above
During a demonstration of Newton's Laws of motion, a student used the setup shown in Figure 1. The student flicked the index card with a fingertip, and the coin fell straight down into a plastic cup as shown in figure 2. Which of these best explains why the coin fell straight down into the cup instead of remaining on the index card?
The coin was at rest until the card was removed, so it tended to remain in the same location. Once the card was gone, the unbalanced force of gravity caused the coin to fall.
Moving the card applied an action force on the coin. Since the card was gone, gravity applied a reaction force on the coin.
The card had less mass than the coin, so a smaller force of gravity acted on the card. The larger force of gravity on the coin made it fall.
The acceleration of the coin falling into the cup was equal and opposite to the acceleration of the card.
Four students were asked to classify the activities of the people in the picture as examples of either potential or kinetic energy. Which student correctly classified the activities?
When a lion eats a zebra and then uses the energy from the zebra to run, this lion's body converts -
electrical energy to chemical
chemical energy to mechanical
chemical energy the radiant
mechanical energy to chemical
The diagram shows a homemade car being pushed with a force of 25 N. The force causes the car to move at a constant speed of 3 m/s. What if the force changed to 35N?
The car will move at a constant speed of 13 m/s
The speed of the car will not change
The speed of the car will increase.
The speed of the car will decrease to 1 m/s
Two cars with difference masses travel at the same speed down a hill toward a stop sign. What will happen when both cars apply brakes at the same time to stop?
The car with the smaller mass will require less force to stop than the car with the larger mass.
The car with the larger mass will maintain its velocity while traveling down the hill.
The car with the smaller mass will take longer to stop than the car with the larger mass.
The car with the larger mass will have less inertia than the car with the smaller mass.
In the classroom demonstration shown, a rubber ball is dropped from Position 1. The ball bounces as shown. At which of these positions does the ball have both the greatest kinetic energy and the least potential energy?
Position 1
Position 2
Position 3
Position 4
What energy transformation occur when propane gas is used to lift the hot air balloon?
Mechanical to radiant to chemical
Chemical to mechanical to thermal
Thermal to chemical to radiant
Chemical to thermal to mechanical
Sometimes tectonic plates do not move easily past one another, and the plates become stuck. Forces build up, and when the plates finally move, tension is released. The sudden movement of the plates is caused by -
the mass of the plates
the weight of the plates
unbalanced forces
gravitational force
Which of these energy is the only one NOT designed to produce both sound and radiant energy?
A family was vacationing in the mountains in a cabin that had no electrical power. They needed boiling water to prepare dried soup mix.
With no electrical energy available, which method would most likely provide enough thermal energy to quickly heat the water to boiling?
using a microwave oven to heat water in a glass jar for 3 minutes
shaking the water in a closed, insulated plastic bottle for 3 minutes
shining a battery-powered flashlight on a metal container of water for 10 minutes
placing a metal pot of water over glowing charcoal in an outdoor grill for 10 minutes
Which object requires only mechanical energy to perform its main function?
A student made a list of activities that involve energy. Which activities on the list are examples of the use of mechanical energy?
1, 4, and 6
2, 4, and 5
1 and 2
3, 5, and 6
An old-fashioned metal toy is shown below. When the candle is lit, the carousel of horses begins to turn. Which of these describes the energy that makes the carousel turn?
Heat from the candle produces currents of warm air
Heat from the candle produces electrical energy
Light from the candle produces mechanical energy
Light from the candle produces wind currents
A student uses a set of headphones to listen to music. Which of these objects uses the same source of energy as the headphones?
A flute using wind energy
A piano using mechanical energy
A keyboard using electrical energy
A teapot using thermal energy
Many people ride a bicycle for fun and exercise. Some people ride a bike to work because it saves money and benefits the environment by reducing the use of fossil fuels. Which of these is NOT an example of the bicycle using mechanical energy?
The pedals, gears, and chain help turn the wheels.
The wheels turn when the bicycle moves.
The front wheel guides the bicycle as it moves.
The reflector allows the bicycle to been seen at night.
When a bat searches for prey at night, it makes sounds as it flies, and it uses the sounds' echoes to find it prey. When the bat flies and listens to echoes to locate prey, it is using -
thermal and radiant energy
sound and thermal energy
mechanical and sound energy
radiant and mechanical energy
A class is learning about states of matter. The teacher shows students how to up the investigation shown in the diagram. What kinds of energy are needed in this investigation to change the state of matter of the candle?
Radiant, mechanical, and thermal
Electrical, radiant, and thermal
Mechanical, radiant, and electrical
Thermal and mechanical
Rube Goldberg was an artist who drew cartoons that showed a very complicated way to do a simple task. The picture shows a cartoon like the ones Goldberg drew. Which form of energy is used to turn on the switch?
Radiant Energy
Thermal Energy
Electrical Energy
Mechanical Energy
Three different objects that use the same source of energy are shown. What is the energy source for these objects?
Radiant Energy
Mechanical Energy
Thermal Energy
Sound Energy
The figure shows a wagon that moves along a track from point X to point Y and then rolls down the second hill. Which of the following best describes the wagon's change in energy as it travels along the track?
I only
I and II
II and III
I, III, and IV
All the above
A student classified the examples of energy in the table according to their types as shown. On the basis of this information, you may reasonably conclude that the examples represent:
neither potential or kinetic energy
only potential energy
mostly kinetic energy but a little potential energy
only kinetic energy
Which statement below is the best description of thermal energy?
Energy of heat
Energy stored in atoms
Energy of light moving in space
Energy released from splitting an atom.
According to Newton’s Law of Inertia, an object that is moving will change its motion only if what kinds of forces act on it?
Constant forces
Unbalanced forces
Strong forces
Gravitational forces
