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GJHS Ch. 13

QuestionAnswer
Energy is measured in units called ____________. joules
Kinetic energy increases as both mass and velocity _____________. increase
Unlike kinetic energy, potential energy is ______________. stored
The total energy of the particles in an object is called _____________ energy. thermal
A match stores ______________ energy. chemical
Work is the transfer of _____________ from one object to another. energy
If a truck and car are moving at the same speed, the vehicle with the greater energy would be the truck, because it has a greater ____________. mass
_________________ energy,such as ultraviolet light, comes from the sun. Electromagnetic
As water goes over the waterfall, its gravitational potential energy is converted to _______. kinetic
Fossil fuels contain ___________ potential energy. chemical
In power plants, coal is often burned to produce ________ that turns a turbine. steam
Power is equal to _____________ divided by time. work
The ability to do work is called______________. energy
The energy associated with motion is called ________________ energy. kinetic
Rubbing your hands together converts mechanical energy to _____ energy thermal
The type of energy stored by fossil fuel is _____________potential energy. chemical
Fossil fuels contain energy that ORIGINALLY comes from _____________. the sun
An example of fossil fuel is: Petroleum (coal or natural gas is also correct)
Niagara Falls is a good example of _________ energy being converted to ___________ energy. potential, kinetic
_________, algae, and some bacteria can convert solar energy to chemical energy. Plants
When work is done on an object, the object gains __________. energy
A compressed spring has __________ ________________ energy. Elastic potential
__________ is the rate at which work is done. Power
The ___________ energy of a book on a shelf is equal to the work done to lift the book to the shelf. potential
During combustion a fuel's __________ energy is converted to thermal energy. chemical
The scientist who suggested that energy can be created under certain conditions is _________. Einstein
What type of conversion is taking place when natural gas is used to heat water? Chemical energy into thermal energy
Fossil fuels contains energy that originally came from the ____________. sun
A device that is twice as powerful as another can do the same amount of work in ________ the time. half
The power of a light bulb that converts electrical energy at a rate of 100 joules per second is ______________ _____________. 100 watts
One horsepower is equal to how many watts? 746 watts
The rate at which work is done is ____________. power
In nuclear reactions huge amounts of energy are produced by destroying tiny amounts of _______. matter
The law of ______________ _________ __________ states that energy can not be created or destroyed. Conservation of Energy
A force pushes an object over a distance of 2 meters. If six joules of energy is transferred to the object the size of the force is ___________N. 3
If the velocity of an object is doubled its kinetic energy is multiplied by _________. 4
An ice cube melts when its _________ energy increases. Thermal
A light bulb converts ___________ energy to electromagnetic energy. electrical
In a machine work output is less than work input because some energy is converted to __________ energy. thermal
_______________ is rate at which work is done. Power
A 100 watt light bulb converts electrical energy to electromagnetic energy at a ______ rate than a 40 watt light bulb. faster
A rolling bowling ball has ________ energy. kinetic
Energy stored in a core of an atom is called _________ energy. nuclear
Potential energy that depends on height is called ______________ potential energy. gravitational
Visible light is an example of ________ energy. electromagnetic
Most forms of energy can be ________ into other forms. converted
The process of burning a fuel is called ________. combustion
The law of conservation of energy states that when one form of energy is converted into another no energy is ____________ in the process. destroyed (or created)
Power is measured in units called _________. watts
Power equals work divided by ____________. time
What type of energy does a spinning turbine have? Mechanical
When fossil fuels are burned, their chemical potential energy is converted into _________ energy. thermal
When generators are spun by turbines they produce ___________. electricity
A device that is twice as powerful as another can do ___________ the amount of work in the same amount of time. twice
Power is the rate at which ____________ is transferred from one object to another, or converted from one form to another. energy
A 200 watt light bulb converts electrical energy at a rate of _________ joules each second. 200
Over long periods of time, buried animal and plant remains are converted into fossil fuels by high temperatures and __________. pressure
An electric motor converts electrical energy to __________ energy. mechanical
To maintain body temperature your body converts chemical potential energy into _______ energy. thermal
A baseball flying through the air has ________ energy because of its motion. mechanical
The energy in the fuel of a rocket is ________ energy. chemical
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