1-5
6-10
11-15
16-19
19 continued
100
Which of the following sequences correctly displays the energy transformation from the inside of a battery to the igniter inside a car's engine?
Chemical Energy 
100
In a closed system, the total energy before an energy transformation is _______ the total energy after it.
equal to
100
What is meant by energy transfer? (meaning what happens to energy)
Energy changes from one form of energy to another.
100
Carl is driving along a country road at 55 mph. A deer runs across the road in front of him, causing Carl to slam on his brakes. Describe the energy transformations that occur in this scenario.
Chemical energy to kinetic energy to thermal energy
100
Energy
The capacity to do work
200
In a combustion engine, fuel is burned to produce mechanical energy. Which of the following shows that an energy transformation has taken place?
heat is produced
200
When energy changes from one form to another, some energy is always changed to
heat
200
If a car was sitting at the top of a hill and you released the break, what would happen to the car and why?
The car would roll down the hill due to gravitational energy.
200
How are repeated trials different from replication in a scientific experiment?
Replication occurs when another scientists repeats an experiment
200
Kinetic Energy
Energy in motion
300
A book falls off the top of a bookshelf. As the book falls, its _______ energy decreases and its _______ energy increases.
potential; kinetic
300
Pablo is sledding down a very steep hill. At which point is Pablo's kinetic energy the greatest?
At the bottom of the hill
300
In the scenario in question 12, determine the relationship between potential energy and kinetic energy.
kinetic energy will increase and potential energy to decrease. The car has the most potential energy at the top of the hill and the most kinetic energy at the bottom of the hill. In the middle of the hill, potential energy and kinetic energy will be the same.
300
Based on the following graph, what will the water temperature be after 70 minutes of heating?
Because the water increase 10 degrees every 10 minutes of heating, after 70 minutes, the water will be 90 degrees
300
Potential Energy
Stored energy
400
The motions of a toy robot are driven by an electric motor. The power source for the toy's motor is a pair of batteries. Based on this information, which of the following best summarizes the energy transformations taking place in the toy robot AFTER energy is transferred from the batteries?
Electrical energy is transformed into mechanical energy.
400
What is the difference between potential and kinetic energy?
Potential energy is stored energy and kinetic is energy in motion
400
If work or motion is occurring, what type of energy will always be given off?
Thermal or heat energy
400
Energy Transformation
Energy changes from one form of energy to another.
400
Mechanical energy
The sum of the motion (kinetic) energy and position (potential) energy of an object or the parts of a mechanical system.
500
Which of the following statements are correct about the Law of Conservation of Energy?
Energy can change forms
500
What is the law of conservation of energy
Law of conservation of energy states that in a closed system, energy can not be created or destroyed, only transferred or transformed.
500
As a skateboarder rides down hill, describe the energy transformations that occur.
Potential energy is transformed into kinetic energy and thermal energy
500
Efficiency
A quantity, usually expressed as a percentage, that measures the ratio of work output to work input.