The rule that energy cannot be created or destroyed, just transferred or converted.
100
What are the three forms of potential energy?
(hint: battery, rubber band, marble about to fall off a table)
Chemical potential energy, elastic potential energy, and gravitational potential energy
100
What types of energy travels to the earth from the sun from the sun?
Radiant energy, thermal energy
100
Describe the energy conversion when you plug in a hairdryer and use it.
The electrical energy is converted into thermal energy and mechanical energy (sound.)
100
What are resources that are continuously being replenished called?
Renewable or inexhaustible resources
200
What is the difference btn kinetic energy and potential energy?
kinetic=energy of motion potential=stored energy
200
A baseball has the most potential energy when the pitcher is doing what?
Holding the ball ABOUT to throw it
200
What type of energy is sound? Kinetic or Potential?
Kinetic energy
200
Describe the energy conversion when plants grow in sunshine.
Radiant energy from the sun is converted into chemical energy in the plants.
200
What is the world’s most inexhaustible source of energy?
Hydroelectricity from water
300
Word which means to change from one form to another?
Convert or transform
300
As a ball falls to the ground which statement best describes its increase or decrease in potential and kinetic energy?
potential energy is converted into kinetic energy OR potential energy decreases as kinetic energy increases
300
Another name for heat energy?
Thermal energy
300
Describe the energy conversions when gasoline is burned so that your car can move down the street and the engine gets hot.
Chemical energy in gas is converted into mechanical energy and thermal energy.
300
What is the difference between a coal burning power plant and a hydroelectric power plant?
Water turns the wheel in hydroelectric, Steam turns the wheel in a coal burning plant
400
What is the difference between renewable and nonrenewable sources? Give an example of each.
A renewable source is replenished continually, like the sun. A nonrenewable source is used up faster than it can be made, like fossil fuels.
400
Car A and B are both driving at 30 mph. I want to know which has more kinetic energy. What will you ask me?
What are the masses of the cars?
400
What type of energy is contained in the nucleus of an atom?
Nuclear energy
400
DOUBLE JEOPARDY!!!
Describe the energy conversions when a radio is plugged into a wall socket and you hear the music. Hint: 4 part conversion!
Eletrical energy is converted to mechanical energy (sound,) into mechanical energy of the eardrum and fluid, and back into the electrical energy of brains and nerve cells
400
List 3 renewable resources
water, wind, solar, biomass, natural gas
500
What is the difference between a generator and a motor?
A generator converts mechanical energy into electrical energy. A motor coverts electrical energy into mechanical energy.
500
Give two reasons why a ball does not bounce as high on the second bounce.
The kinetic energy is converted into thermal energy from the friction of the bounce and to mechanical energy of sound when it bounces.
500
What type of energy is stored in plants and therefore also in fossil fuels?
Chemical energy
500
Describe the energy conversion when you put a new battery into the flashlight and turn it on. Must give ALL parts.
Chemical energy is converted into electrical, radiant, and thermal energy.
500
What device turns solar energy directly into electrical energy?