What is the form of energy associated with the position and motion of an object?
100
This is what happens to electrical energy when you turn a toaster on.
What is it is transformed to thermal energy?
100
When you stretch a rubber band, you give it
What is elastic potential energy?
100
In SI, which unit is used to express the divers' gravitational potential energy?
What is the Joule?
200
These are the two basic kinds of energy
What is potential and kinetic energy
200
If an object's mechanical energy is equal to its potential energy, how much kinetic energy does the object have?
What is zero?
200
Define the law of conservation of energy.
What is no energy is created or destroyed?
200
Define work in terms of energy
What is the transfer of energy?
200
A pendulum will eventually slow and stop because of
What is friction?
300
The rate at which energy is transferred
What is power
300
If the kinetic energy of a falling apple is 5.2 J and its potential energy is 3.5 J, what is its mechanical energy?
What is 8.7 Joules?
300
Describe the relationship between the different forms of energy.
What is most forms of energy can be transformed into other forms?
300
This is the power of a machine that transfers 450 J of energy in 9 sec.
What is 50 watts?
300
A 350N girl walks down a flight of stairs so that she is 2.5 m below her starting point. What is the change in the girl's gravitational potential energy?
What is 950 J?
400
This is the formula for finding potential energy
What is weight X height
400
These are the 5 forms of energy associated with the particles that make up objects
What are thermal, electrical, chemical, nuclear, and electromagnetic?
400
These COMMON energy transformations allows you to send a rubber band flying across the room
What is elastic potential energy in the stretched band is transformed to kinetic energy?
400
A 1,350 kg car travels at 12 m/s. This is its kinetic energy.
What is 97,000 Joules
400
One chef places a pie in the oven at a low setting so that it is baked in one hour. Another chef places a pie in the oven at a high setting so that the pie bakes in 30 minutes. Which senario is using more power? Explain.
What is the second one because it's getting the same amount of work done in a shorter amount of time?
500
What is the formula for finding kinetic energy
What is 1/2 X Mass X Velocity (squared)
500
Name two examples of electromagnetic energy
What are x-rays, microwave, ultraviolet radiation, CT scan, infrared radiation, or radio waves
500
Describe the energy transformations that occur when you strike a match.
What is
1. striking the match transforms mechanical energy to thermal energy.
2. The thermal energy causes particles to release chemical energy.
3. Finally, chemical energy is transformed to thermal and electromagnetic energy.
500
There is a small bus, a compact car, and a motorcycle traveling down the road at 20 m/s. Name the vehicle with the least amount of kinetic energy and the most amount of kinetic energy. Explain your answer.
What is the motorcycle has the least amount of kinetic energy because it has the least mass. The small bus has the most kinetic energy because it has the most mass.
500
Name Weight (N) Height of Dive (m)
Clark 620 3
Simmons 640 3
Delgado 610 10
Chen 590 10
When standing on the diving board, which diver has the least gravitational potential energy?