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Types of Energy
Transfer of Energy
Transfer of Energy 2
Energy Sources
Vocabulary
100
Energy of Motion
What is Kinetic Energy
100
Explain the transformation that takes place when you rub your hands together. Explain the type of energy and where it comes from. 3 steps
What is chemical (from braking down bonds in food) to kinetic or mechanical (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
Wind turbines convert _________________ energy into eletrical energy.
What is kinetic or mechanical
100
It's the measure of how fast the particles in a substance are moving.
What is Temperature?
200
The type of Energy that depends on position
What is potential energy
200
Explain the transformation that takes place when you turn on a flashlight. From the battery to the light. Explain the type of energy and where it comes from. 4 steps
What is Chemical (of the battery) to electrical (flow of elctrons) to radiant (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
Hydroelectricity can generate electricity because of the initial _______________________ energy of the water.
What is potential
200
It's the transfer of energy in waves.
What is radiation
300
Type of energy that depends on the speed of molecules.
What is thermal or heat energy
300
Explain the transformation of a book falling from table. Explain the type of energy and where it comes from. 2 steps
What is Potential (due to the position of the book) to kinetic (motion of the book)
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
300
When people split the nuclei of atoms, huge amounts of energy are released. this is what powers an atomic bomb.
What is nuclear energy?
300
A device that transforms kinetic energy into electrical energy.
What is a 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 enrgy and where it comes from. 5 steps
What is Chemical (coal) to thermal (heat released from braeking the bonds of coal to boil water) to kinetic ( the steam makes a 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
400
Wood, paper, gasoline, diesel, and food are some examples. This is the energy stored in chemical bonds, this is why soda fizz when opened.
What is chemical energy
400
State the Law of Conservation of Energy
What is Energy can not be created of destroyed it can only be transfered or tranformed.
500
Type of energy in fossil fuels
What is Chemical energy
500
Explain the transformation that takes place to make a toaster work using a wind turbine. Begin with the sun. List the type of energy and explain where it comes from.
What is thermal energy (from the sun) to kinetic energy ( the heat caused the wind to move and the baldes to spin) to electrical ( the turbine turns a generator and makes a flow of electons) to thermal ( heat from the toster) to radiant ( when the toaster get hot enough it will emmit light)
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
Explain how nuclear energy is used to create electricity and give one advantage and one disadvantage.
What is Uranium atoms are split and heat is released to boil water. The boiling water creates steam. The steam turns a turbine and the turbine tunrs a generator, which makes a flow of electrons. One advantage is that is does not pollute the air. One disadvantage is that is makes radioactive waste.
500
In science, the word _________ has a very particular meaning. It is a transfer of energy from a warmer object to a cooler object.
What is Heat.