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Energy Transformations
Energy Conservation
Potential and Kinetic
Types of Energy
Types of Energy
100
Describe 3 energy changes in: Burning a candle.
Chemical energy -> thermal energy + radiant energy
100
What is the law of conservation of energy?
energy can not be created or destroyed. it changes from one form to another.
100
What is potential energy?
stored energy
100
Energy that has the ability to fall; this type of energy increases the higher up you go. Be specific.
Gravitational energy.
100
The more you stretch the string from a bow, what kind of energy increases?
The more you stretch the string, the more stored mechanical energy it has.
200
Describe energy changes in: Using a hot plate to boil water.
Electrical energy -> thermal energy and motion energy
200
What is kinetic energy?
energy of motion
200
"You can burn it or you can eat it."
Chemical energy.
200
List the renewable resources (list at least 3 out of the 5 possibilities.) Then write one pro and one con.
Biomass, hydropower, geothermal, wind and solar. Pro: few carbon dioxide emissions, abundant, Con: initial equipment expensive, doesn't generate as much energy as non renewable, depends on weather.
300
Describe 2 energy changes in: A hungry football player eating a large sandwich to use the food for energy.
Chemical energy -> mechanical or motion energy and thermal energy
300
How can you increase and decrease the potential energy of an object?
object's weight and or height increases, its potential energy increases.
300
The source of all energy on Earth.
Sun
300
List the Non-Renewable resources (list at least 3 out of the 5 possibilities.)
Petroleum, coal, natural gas, uranium and propane. Pro: abundant (for now), used mostly to satisfy our energy needs, easy to transport and obtain, generates a lot of energy Con: emits greenhouse gases that lead to global warming, spills and mining accidents can harm human and wildlife.
400
Describe energy changes in: Using a solar-powered calculator.
Radiant energy -> electrical energy -> radiant and thermal energy
400
A person running down the sidewalk has this type of energy.
(Mechanical or motion) kinetic energy.
400
An atom splitting is this type of energy.
Nuclear energy.
400
Batteries contain what kind of energy
Chemical
500
Describe energy changes in: A solar panel on the roof of a building used power the tv.
Radiant energy -> electrical energy -> radiant and thermal
500
What happens to an object's kinetic energy if it moves faster?
more speed, means more kinetic energy
500
The sun is an example of this type of energy.
Heat, Radiant, Nuclear
500
What do solar panels, wind turbines, and coal power plants do to make the energy usable to power up our devices?
turns other forms of energy (radiant, motion, chemical) into electrical energy.