Energy Transformations
Conservation of Energy
Potential and Kinetic
Types of Energy
Review Questions
100
What is the energy transformation of burning a candle?
Chemical energy -> heat energy + light energy
100
The Law of Conservation of Energy states that energy can neither be created nor destroyed, only ______ or _______.
Transferred or Transformed
100
What is the process of saving up or storing energy?
Potential energy.
100
Energy that has the ability to fall; this type of energy increases the higher up you go.
Gravitational energy.
100
Which statement best describes a scientific theory?
A. A scientific fact that no longer requires any evidence to support it.
B. A collection of data designed to provide support for a prediction.
C. An educated guess that can be tested by scientific experimentation.
D. A general explanation that is supported by many scientific observations.
D. A general explanation that is supported by many scientific observations.
200
What is the energy transformation of using a hot plate to boil water?
Electrical energy -> Thermal (heat) energy
200
From our hot plate experiment, what happened to the energy between the plug and the temperature dial (NOT the heater)?
It transformed from electrical to mechanical.
200
What is the process of spending energy or "energy in motion"?
Kinetic energy.
200
"You can burn it or you can eat it."
Chemical energy.
200
Which of the following describes a scientific law?
A. Based on opinion.
B. Describes what always happens.
C. Can be created without experimentation.
D. Describes why something has happened.
B. Describes what always happens.
300
What is the energy transformation of a hungry football player eating a large sandwich to use the food for energy?
Chemical energy -> Mechanical energy
300
As an object's potential energy decreases, what happens to its kinetic energy?
It increases.
300
A heavy vase on a table has this type of energy.
(Gravitational) potential energy.
300
This type of energy is generated by a force - a push or a pull - and has multiple parts that work together.
Mechanical energy.
300
Which statement describes the difference between an independent variable and a Dependent variable?
A. The dependent variable does not change and the independent variable does change.
B. The independent variable does not change and the dependent variable does not change.
C. The dependent variable is the control and the independent variable is the result.
D. The dependent variable changes based on the independent variable.
D. The dependent variable changes based on the independent variable.
400
What is the energy transformation of using a solar-powered calculator?
Radiant energy -> electrical energy ->light energy
400
Name one way you can conserve energy in your home.
Energy efficient appliances, turning the lights off, timers on your air conditioner, etc.
400
A person running down the sidewalk has this type of energy.
(Mechanical) kinetic energy.
400
An atom splitting is this type of energy.
Nuclear energy.
400
Sammy is conducting an observational study on how the amount of light can affect the number of stars you can see at night. What is the independent variable for this study?
A. Amount of light
B. Number of stars you can see
C. Four different cities
D. Different types of stars
A. Amount of light
500
How is energy being transferred AND what FORCES will cause the Newton's Cradle to stop moving?
Gravitational Potential Energy (Ball on end is lifted up) > Mechanical Kinetic (Pushes from each ball to the next)
Air Resistance, Friction, Gravity
500
Which cart has the most KINETIC energy?
2
500
What types of energy do these people have?
(Gravitational) potential and kinetic energy.
500
DOUBLE JEOPARDY
The sun is an example of these types of energy.
(You MUST name at least 2!)
Thermal (Heat), Radiant, Nuclear and Gravitational
500
What effect does decreasing the temperature of a room have on a lifespan of a battery? Which variable is in bold?
Independent Variable