What is Energy?
Define "energy"
What is "the ability to cause change"?
all the particles that make up matter are always in motion
the total kinetic energy of all the particles in a substance
What is "thermal energy"?
energy sources that can be easily replaced
What are "renewable" resources
takes place when energy changes from one form into another form
What is "energy transformation"?
The energy of an object due to motion
What is:
particles in solids vibrate in position and close together
particles in liquids move more freely than in solids
particles in gasses are far apart and move a high speeds
The difference between thermal energy and temperature
What is "temperature is the AVERAGE kinetic energy of the particles" and "thermal energy is the TOTAL kinetic energy"
non-renewable energy resources made from carbon-rich plant and animal remains
What are "fossil fuels"?
the law of conservation of energy
What is "in a closed system, energy cannot be created or destroyed. It can only change form." ?
The energy of an object due to its position.
What is "potential energy"?
measure of average kinetic energy of all the particles in an object
What is "temperature"?
Energy transferred from an object at higher temperature to an object at a lower temperature
What is "heat"?
Three alternative sources of energy
What are "solar, nuclear, hydroelectric, wind, geothermal, and/or burning biomass"?
the transfer of energy as heat fro one substance to another through direct contact
What is "conduction"?
Name 4 forms of energy
What are "mechanical energy," "sound energy," "electromagnetic energy," "electrical energy," "chemical energy," "thermal energy," or "nuclear energy"
Name the three scales used to measure temperature
what are Celsius, Fahrenheit, and Kelvin?
How heat is measured
What is "calories"
What are coal, natural gas and petroleum?
The transfer of energy as heat by the movement of a liquid or gas; occurs when a cooler, denser mass of gas or liquid replaces a warmer, less dense mass of a gas or liquid
What is "convection"?
Energy is expressed in this
What are "joules" (J)?
How a substance's temperature changes when the average kinetic energy of its particles increases
What is "temperature increases"?
How heat affects the state of an object
What is added energy can cause bonds between particles to break, which allows the state to change; removing energy can also change the state.
What are some problems with using fossil fuels
What is "they are nonrenewable because they take millions of years to form" and "burning fossil fuels produces pollution"?
What is the transfer of energy by electromagnetic waves?