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Energy

Name _____________________ Period____________  Date _________
Across
_____ energy is the total potential and kinetic energy of particles in an object.
One kind of nuclear reaction, known as nuclear _____, occurs when an atom splits.
Electromagnetic waves do not require a _____., so they can travel through a vacuum, or empty space
The amount of work done is calculated by multiplying force time ______.
Forms of electromagnetic energy include ______ rays, infrared waves and radio waves.
According to the law of ________ of energy, energy cannot be created or destroyed.
When a force transfers energy to an object and causes it to move _______ is done.
Energy that is stored is called _____ energy.
Potential energy + kinetic energy.
The rate at which energy is transferred is ___________.
A change from one form of energy to another is called an energy _________.
The potential energy associated with an object that can be stretched or compressed is called _______ potential energy.
Cell phones send and receive messages using ________ which is a type of electromagnetic energy that can also be used to cook food.
The center of an atom is the ______.
The unit of work that is equal to one newton-meter.
The unit of power is the joule per second also know as the ________.
At the highest point of its swing, a pendulum has its _________ potential energy.
Einstein discovered that _______ can be transformed into energy.
Nuclear ______ occurs when the nuclei of atoms fuse, or join together.
Down
Chemical energy is the potential energy stored in the chemical _____ that hold chemical compounds together.
Energy stored in the nucleus of an ______ is nuclear energy.
Kinetic energy = 1/2 x _____ x velocity squared.
When a moving object experiences____. Some of its kinetic energy is transformed into thermal energy.
Nuclear fusion reactions occur in the _____, releasing huge amounts of energy.
The energy of motion is called _______ energy.
The ability to do work or cause change.
The energy of charged particles is ________ energy.
_______ energy, is a form of energy that travels through space in waves.
Potential energy that depends on the height an object is raised is called _____ potential energy.
Gravitational potential energy = _____ x height
The higher the ____ of an object, the more thermal energy the object has.
When an object or substance is heated, its particles move ______.
Electromagnetic energy travels in ______ that have some electrical and some magnetic properties.