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Students are investigating energy transfer in the laboratory. The students use rubber bands and rulers for their investigation. They attach a rubber band to each ruler, pull the band back, and allow the band to launch from the ruler. The diagram shows their set up.
Ruler Distance Band Is Pulled Back
(centimeters) Distance Band Travels (centimeters)
1 5 61
2 10 122
3 15 213
4 20 366
Which statement best describes the results of their investigation?
A.
The more potential energy the band has, the more kinetic energy is transferred, and the farther the band travels.
B.
The less potential energy the band has, the more kinetic energy is transferred, and the farther the band travels.
C.
The more kinetic energy the band has, the more potential energy is transferred, and the farther the band travels.
D.
The less kinetic energy the band has, the more potential energy is transferred, and the farther the band trave
The correct answer is A. The more potential energy the band has, the more kinetic energy is transferred, and the farther the band travels.
The correct answer is:
A. The more potential energy the band has, the more kinetic energy is transferred, and the farther the band travels.
The diagram models a device that was the foundation for the modern electrical turbine.
Which of the following is causing the wheel to turn?
A.
Force from the mechanical energy generated by the solar radiation causes the wheel to turn.
B.
Force from the mechanical energy generated by the moving water causes the wheel to turn.
C.
Force from the thermal energy generated by the solar radiation causes the wheel to turn.
D.
Force from the thermal energy generated by the moving water causes the wheel to turn.
The correct answer is B. Force from the mechanical energy generated by the moving water causes the wheel to turn.
The table describes the qualities of four objects.
Object Produces Light? Temperature (°C/°F)
a bouncing basketball no 20°C/68°F
the Sun's surface yes 5500°C/10,000°F
a lit lightbulb yes 250°C/482°F
a fork sitting on a table no 15°C/59°F
Which of the following is most likely true?
A.
Small objects produce more light than larger objects.
B.
Large objects produce less heat than smaller objects.
C.
Objects that produce light energy often produce heat energy.
D.
Objects that do not produce light energy have high temperatures.
The correct answer is C. Objects that produce light energy often produce heat energy.
The diagram below shows two flasks of water, one with hot water and the other with room temperature water, which are connected by a conductive metal bar.
Multiple Choice Question
The diagram below shows two flasks of water, one with hot water and the other with room temperature water, which are connected by a conductive metal bar.
When initially set up, in which direction does the thermal energy between the flasks flow?
A.
Thermal energy flows from the flask on the left to the flask on the right.
B.
Thermal energy flows from the flask on the right to the flask on the left.
C.
Thermal energy does not flow between the two flasks.
D.
Thermal energy flows equally between the two flasks.
The correct answer is A. Thermal energy flows from the flask on the left to the flask on the right.
A piece of metal is heated and then submerged in cool water. Which statement below best describes what happens?
A.
The temperature of the water will decrease, while the temperature of the metal will increase.
B.
The temperature of the water will decrease and the temperature of the metal will also decrease.
C.
The temperature of the water will increase, while the temperature of the metal will decrease.
D.
The temperature of the water will increase and the temperature of the metal will also increase.