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 an object decreases the speed it is moving at, this is evidence that the kinetic energy is ______________________.
What is decreasing
100
Wind turbines convert _________________ energy into eletrical energy.
What is kinetic
100
An energy source that is replinished continually (not an example), we can make more faster then we can use it
What is renewable resource
200
The type of Energy that depends on mass and position - higher above the ground and more mass means an object has more of this type of energy
What is potential energy
200
Explain the transformation that takes place when you turn on a flashlight. From the battery to the light.
3 steps
What is Chemical (of the battery) to electrical (flow of electrons) to 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
An energy source that is used up faster that is can be replaced. (not an example)
What is a nonrenewable resource
300
Type of energy that depends on the speed of molecules. We measure it using a thermometer.
What is thermal or heat energy
300
Explain the transformation of a book falling from a 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
Wind energy, coal energy, hydroelectric energy and solar energy all are used to make electricity. Which of these are considered renewable sources of energy
What is Wind energy, hyrdoelectric energy and solar energy
300
When one kind of energy is changed into another kind of energy
What is a energy transformation
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 toaster. List the type of enrgy and where it comes from. 3 steps
What is electrical (flow of electrons) to thermal (hot toaster coils) and light.
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 had more potential energy to start with
400
Explain solar energy and give one advantage and one disadvantage.
What is solar energy converts the suns energy in to electrical energy.
One advantage is it does not pollute.
One disadvantage is that it is expensive.
400
A type of energy caused by vibrations
What is sound energy
500
Type of energy stored in bonds, found in food, batteries, candles, and gasoline.
What is Chemical energy
500
Explain the transformation that takes place to make a toaster work using a wind turbine. Begin with the wind (5 steps)
What is kinetic energy (of the wind) to kinetic energy (the blades spinning) to electrical ( the turbine turns a generator and makes a flow of electons) to thermal ( heat from the toster) to light ( when the toaster get hot enough it will emit light)
500
A pot of hot boiling water is placed on a room temperature burner that is in the off position, explain the transfer of heat that will occur.
What is move from the pot to the burner
500
Draw an electrical circuit that uses a battery, two wires, and a light bulb. The light bulb must be lit.
What is a closed circuit ... drawing must be accurate.
500
Name Each type of energy and give an example.
Mechanical (Kinetic + Potential), Light, Heat, Sound, Chemical, and electrical