Energy basics
What is energy?
Energy is the ability to cause change.
What is renewable energy?
Renewable energy is an energy resource that is replaced as fast as, or faster than, it is used.
What is sound energy?
Sound energy is carried by sound waves.
What happens during an energy transformation?
One form of energy is converted to another form of energy.
What is work in scientific terms?
Work is the transfer of energy that occurs when a force makes an object move in the direction of the force.
What is potential energy?
Potential energy is stored energy due to the interaction between objects or particles.
Name a nonrenewable energy source.
Fossil fuels, such as coal or propane or nuclear energy
What is radiant energy?
Radiant energy is the energy carried by electromagnetic waves
Describe what happens in conduction?
Particle collisions transferring thermal energy
How is energy transferred?
Energy is transferred when work is done on an object.
What is mechanical energy?
Mechanical energy is the sum of potential energy and kinetic energy in a system
which energy transformation occurs during photosynthesis ?
Radiant to chemical
what type of energy do batteries or matches store?
chemical potential energy.
Define convention
movement of particles carrying thermal energy
What is an example of work being done?
lifting
moving
pushing
What is the law of conservation of energy?
The law states that energy can be transformed from one form to another, but it cannot be created or destroyed.
What is geothermal energy?
Renewable resources
What is nuclear fission?
Nuclear fission is the process of splitting atoms apart to release energy.
what is the source of the sun's energy ?
Thermal
what are the 2 inefficiency energy?
Sound and thermal energy
What is an example of energy transformation?
The conversion of chemical energy in a tennis player’s muscles to mechanical energy when she swings her arm.
What is biomass?
Renewable resource
How does energy transfer occur in an open system?
An open system exchanges matter or energy with the environment.
What is the difference between open and closed systems?
An open system exchanges matter or energy with the environment, while a closed system does not.
How does a wind turbine generate energy?
Wind moves the blades of a wind turbine, which generates electric energy.