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Types of Energy
Transfer of Energy
Miscellaneous
MATH
Vocabulary
100
Energy of Motion
What is Kinetic Energy
100
Explain the transformation that takes place when you rub your hands together. START FROM THE SUN ( 5 steps)
What is light energy( from the sun) to chemcial energy (plants make sugar) to chemical (stored in bonds in food) to kineitc (movement of the hands) to thermal (heat produced from friciton)
100
As the mass of an object moving at a given speed decreases its kinetic energy will ______________________.
What is decrease
100
Find the final kinetic energy of a diver who has 500 J of potential energy at the top of his dive. (Assuming no energy is lost due to friction)
What is 500 J?
100
State the definition of energy
What is the capacity to do work or to put an object into motion
200
The type of Energy that depends on mass and position
What is potential energy
200
Explain the transformation that takes place when you turn on a flashlight. From the battery to the light. 4 steps
What is Chemical (of the battery) to electrical (flow of elctrons) to radient (of the light) to thermal ( the heat produced by the light)
200
As the speed of a falling object increases, its potential energy will _____________________.
What is decrease
200
What is the potential energy of a book that weighs 5 kg and is sitting on top of a table 10 meters off the ground? (on Earth)
What is 50 joules
200
State the Law of Conservation of Energy
What is Energy cannot be created or destroyed
300
Type of energy that describes the energy transferred through waves
What is electromagnetic, light, or sound energy
300
Explain the transformation of a book falling from table. Explain the type of energy and where it comes from. 3 steps
What is Potential ( due to the position of the book) to kinetic ( motion of the book) to thermal ( the friciton between the book and the air)
300
When you drop a book on the floor, what happens to its original potential energy?
What is the potential energy was transfered to kinetic and thermal energy
300
A 4.5 kg bowling ball rolling at a speed of 25 m/s. What is the ball's kinetic energy? (Significant Figures!)
What is 110 joules
300
A device that transforms kinetic energy into electrical energy.
What is a turbine (generator)
400
Type of energy that depends on the flow of electrons
What is electrical energy
400
Explain the transformation of energy that occurs in a coal burning power plant. List the type of energy and where it comes from. 5 steps
What is Chemical (coal) to thermal (heat released from breaking the bonds of coal to boil water)to kinetic ( the steam makes) to kinetic (turbine move) to electrical (the turbine is conected to a generator that make a flow of electrons)
400
A basketball is dropped from a height of 2m and another identical basketball is dropped from a height of 4m. Which ball has more kinetic energy just before it hits the ground?
What is the basketball dropped from a height of 4m because it has more speed.
400
A 4 kg ball has 5000 joules of kinetic energy as it is tossed into the air. What is the ball's velocity? (Significant Figures!)
What is 50 m/s
400
Name 7 types of energy. (Not potential or kinetic)
Heat, Chemical, Electrical, Light, Sound, Mechanical, Nuclear
500
Type of energy stored in bonds
What is Chemical energy
500
When you drop a tennis ball, it hits the floor and bounces back up. But, it does not reach the same height as before and each time bounce is smaller than the previous one. However, you notice the tennis ball is slightly warmer after it finishes bouncing. Explain how the law of conservation of energy is obeyed.
What is During each bounce, some of the kinetic energy of the ball in transfered into thermal energy. As a result, energy is not created or destroyed, but only changes form so that the law of conservation of energy is obeyed.
500
What are two ways you can increase gravitational potential energy without increasing mass?
Increase the height and increase the strength of gravity.
500
A barbie doll has 4500 joules of potential energy on top of a 100 m balcony. The doll falls. What is the doll's velocity at the bottom of the fall?
What is 44 m/s
500
Wind energy, coal energy, nuclear energy, ethonal energy, hydroelectric energy and solar energy all are used to make electricity. However, solar energy is different, what do all the other energy sources do that solar energy does not?
What is Turn a turbine that turns a generator to make electricity.