Energy occurs in how many forms? many different forms What are the two main types of energy? Potential Energy and Kinetic Energy A ball sitting on top of a fridge has what kind of energy? Potential Energy (at rest) If we increase potential energy, what happens to kinetic energy? Kinetic energy also increases What two factors influence kinetic energy? Mass and Speed All forms of electricity depend on what flowing from one place to another? Electrons What is a battery? A device that converts chemical energy to electrical energy What is the ability to bring about change? Energy What transformation takes place when you burn wood in a fireplace? Chemical Energy to Radiant (light) Energy What transformation takes place with hair dryers? Electrical Energy to Heat/Sound Energy What transformation takes place with fireworks? Chemical Energy to Radiant/Sound/Heat Energy What transformation takes place with a fan? Electrical Energy to Mechanical Energy What transformation takes place when burning a match? Chemical Energy to Heat Energy What transformation takes place with an electrical motor? Electrical Energy to Mechanical Energy What transformation takes place when a student is playing soccer? Chemical Energy to Mechanical Energy What transformation takes place when a violinist draws her string across the bows of her violin? Mechanical Energy to Sound Energy What form of heat energy does a microwave use? Radiation What form of heat energy does a metal spoon in a hot bowl of soup use? Conduction What form of heat energy is butter melting on hot corn? Conduction What form of heat energy is a lava lamp? Convection What form of heat energy is a car heating up on a sunny day? Radiation What form of heat energy is a bird gliding through the air? Convection The transfer of heat energy through touching is Conduction Heat energy that travels in all directions from its source is Radiation The transfer of heat by the upward and downward movement of a gas or liquid is Convection A material that does not allow electricity to flow is called a(n) Insulator A material that does allow electricity to flow is called a(n) Conductor Energy is measured with what unit of measurement? Joules What is the temperature scale used by most scientists? Celsius The instrument used to measure the average molecular movement of a substance is a(n) Thermometer What is the relationship between potential and kinetic energy? When potential energy increases, kinetic energy increases. When potential energy decreases, kinetic energy decreases What form of energy does food start out as? Chemical Energy What forms of energy does food transfer into? Sound Energy, Mechanical Energy, and Heat Energy What is nonrenewable energy? Nonrenewable energy cannot be reused or regrown in a short period of time (under 100 years) What is renewable energy? Renewable energy can be reused or regrown within a short period of time (less than 100 years) What are some examples of nonrenewable resources? Fossil fuels (coal, petroleum, natural gas) uranium, and nuclear What are some examples of renewable resources? Hydro (Water), Solar (Sun), Wind, Biomass, Geothermal What is the Law of Conservation of Energy state? Energy cannot be created or destroyed, it can only be transformed (change form) On which axis is the independent variable always located? X-axis (bottom of the graph) On which axis is the dependent variable always located? Y-axis (left-hand side of the graph)