Vocabulary
stored energy
potential energy
A plug-in radio converts ____________________ energy into the ____________________ energy of a vibrating speaker.
electrical
sound
A plug supplies a toaster with ____________________ energy, which is converted into ____________________ energy, which can be seen, and also ____________________ energy, which can be felt.
electrical
radiant
thermal
Wind turbines convert _________________ energy into electrical energy.
mechanical
A car battery converts the ____________________ energy of an acid reaction with metal into the ____________________ energy needed to drive the starter motor.
chemical
electrical
energy of motion
the sum of potential and kinetic energy
mechanical energy
A washing machine converts the ____________________ energy supplied by Springfield Electric into the ____________________ energy of the oscillating agitator.
electrical
mechanical
A match converts the ____________________ energy of the sulfur into visible ____________________ energy and also ____________________ energy.
chemical
radiant
thermal
A solar battery cell converts the sun’s ____________________ energy into ____________________ energy needed to power a solar car’s motor.
radiant
electrical
A solar cooker converts ____________________ energy from the sun into ____________________ energy.
radiant
electrical
energy formed in bonds
chemical energy
A car’s generator converts the ____________________ energy of spinning, into the ____________________ energy, which powers the radio, etc.
mechanical
electrical
A gasoline engine converts the ____________________ energy of octane into the ____________________ energy of the turning wheels, and the ____________________ energy of a hot radiator.
chemical
mechanical
thermal
Plants use energy from the sun and is turned into this form when it undergoes the process of photosynthesis.
radiant to chemical
The purpose of a nuclear power plant is to transform nuclear energy into electricity. This is done in steps starting with a nuclear reaction which generates heat to produce steam. The steam in turn is used to turn a generator which finally produces electricity.
Describe the energy transformation taking place.
nuclear to thermal to mechanical to electrical
state the Law of Conservation of Energy
Energy cannot be created or destroyed, but it can change from one form of energy to another.
The ____________________ energy stored in your body is used to provide the ____________________ energy needed to walk behind the mower.
chemical
mechanical
The action of rubbing one’s hands together demonstrates the conversion of ____________________ energy into ____________________ energy.
mechanical
thermal
A plug supplies an iron used to iron clothes with ________________________________ energy, which is converted into ________________________________ energy.
electrical
thermal
When you set food under a heat lamp to warm it, you are changing ____ energy into _____ energy.
radiant
thermal
Define energy transformation
a change from one form of energy to another
Explain the transformation that takes place when you turn on a flashlight. From the battery to the light. 5 steps
Chemical (of the battery) to electrical (flow of electrons) to mechanical to radiant (of the light) to thermal (the heat produced by the light)
The following steps describe the process of generating electricity by burning coal in a power plant:
1. The coal fire converts liquid water to steam.
2. The steam rotates fanlike blades of a mechanical turbine.
3. The shaft of the turbine spins an
electric generator.
4. The electric power is delivered to the consumer over long-distance power lines.
Which energy transformation occurs during this process?
chemical (stored in coal) to thermal (when coal is burned and creates steam) to mechanical (turns the turbine) to electrical (spinning turbine generates electricity)
In any energy transformation, some energy is always lost in the environment as _________.
thermal energy
4. When energy is transferred in a system, the total amount of energy before the transfer is _____________ after the transformation is complete, just in different forms.
is it the same or different?
the same