PS3.A.2 Energy at Macroscopic Scale

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10 questions
• Q1
What type of energy conversion is demonstrated above?
potential to kinetic
potential to potential
kinetic to potential
kinetic to kinetic
30s
• Q2
The wrecking ball has energy that can be converted from one form to another. When the wrecking ball hangs motionless several stories up, it has no _________ energy, but a lot of ___________ energy.
potential; thermal
kinetic; potential
thermal; kinetic
potential; kinetic
30s
• Q3
Kinetic energy is the energy an object has when it is in motion. The kinetic energy of an object can easily be determined by an equation using the mass and velocity of that object. Which runner would have the greatest kinetic energy?
A 100 kg male running slowly (1.85m/s)
A 45 kg female running fast (4.17 m/s)
A 45 kg female running slowly (1.85 m/s)
A 100 kg male running fast (4.17 m/s)
30s
• Q4
Flowing water moving along a stream reaches a dam built by a beaver. What best describes the change in energy as the water reaches the dam?
Potential energy of the water is converted to kinetic energy.
Thermal energy of the water is converted to potential energy.
Kinetic energy of the water is converted to potential energy.
Kinetic energy of the water is converted to heat.
30s
• Q5
Which point on the pendulum's swing represents the minimum potential energy?
A & C
B
A
C
30s
• Q6
Some children use bowling ramps to guide their balls down the alley and to the pins. This facilitates the balls reaching the pins at the end of the lane for children who cannot throw the ball with enough force. What is the energy conversion process that will result from the child releasing the ball at the top of the ramp?
potential to kinetic
kinetic to potential
potential to chemical
heat to potential
30s
• Q7
In this energy transfer diagram, the amount of energy lost to the surroundings as heat is....
250 J
350 J
200 J
450 J
30s
• Q8
A student standing on a roof throws a ball toward the sky. He then tries to make an energy transfer diagram for the ball. What should go in the blank in the diagram?
Useful Energy
Light Energy
Heat Energy
Electrical Energy
30s
• Q9
As water flows down stream, it can move pebbles, sediment, and even cause erosion. What best explains this phenomenon?
Thermal energy is converted to kinetic energy, moving the pebbles and sediment.
Kinetic energy of the water is transferred to the objects in the stream, moving the pebbles and sediment.
Chemical energy is converted to kinetic energy, moving the pebbles and sediment.
Kinetic energy is converted to potential energy, moving the pebbles and sediment.
30s
• Q10
Which point on the roller coaster's path represents the maximum potential energy?
D
A
C
B
30s

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