Energy can be made and destroyed

When energy is ...................... , it moves from one object to another

Stored energy in an object at rest is called ...........................

The amount of potential energy an object has depends on ..................

The energy of a moving object is called ....................

The kinetic energy of an object depends on ..........................

When energy is ............................, it is changed from one kind of energy to another kind

From forms of kinetic energy ..........................

Like larger objects , the smallest particles of matter have energy, too

When objects are bent, stretched, or compressed so they have ......................

......................... Is energy that an object has because of the movement of its particles

........................ is energy caused by charged particles that flow through a path

Gasoline has ...............................

.......................... is the distance an object travels in a particular amount of time

.................... is often described as fast or slow

.......................... is which way an object is moving such as north or south

The motion is described by two factors are ......................

......................... Happens when one object bumps into another object

During ................... , energy is ..........................

When collisions occur , there is change of kinetic energy to light , thermal , or other types of energy

Newton’s cradle shows how energy can move between objects in a collision

The sound that produced from ...................... Of two cars is evidence to energy transformed

When you lift the first sphere in newton’s cradle , the energy of it will ........................

................... Is the transfer of thermal energy from one object to another

Heat flows by conduction , convection , or radiation

................... Is energy that travels as a wave

the heat is transferred in toaster to heat the toast by .....................

the heat of sun is transferred by ........................

Heat is transferred between hot coffee and spoon by ....................

We use ................... To measure temperature of the object

When heat is transferred to an object, the object’s particles move slower

When the object has higher temperature , the particles move ...................

..................... is a form of energy that we can see

Light is .................... to earth from the sun

Jelly fish generate their own ....................

Generate means ......................

Flashlights , light bulbs, and lasers are natural sources of light

Sun is ............... source of light

When you strike a ball , you hear a .......................

...................... Is the energy in the particles that vibrate as they pass through matter

Sound can travel through solids and liquids only

Sound ................. is how fast or slow the particles vibrate

A sound with a ................... Pitch has particles that vibrate fast

A ..................... is a form of the transfer of energy

Sound is transferred as a ............... from the source of sound

When a wave moves through matter, the matter move with the wave

When object vibrates , it moves ...............................

When you turn on a light , ...................... Moves

......................... Is a property that causes matter to have an electric force

Electric charges may be positive or negative

Two particles that have the same charge will ..........................

Attract means ..........................

Two particles that have different charge will ....................

Repel means .....................

The flow of charged particles in the same direction is called ................

ed particles in the same direction is called

A material that allows electric current to flow through them

Metal is .............. of electricity

We use .......... To make electric wires

A material that does not allow electric current to flow through is called .......................

We use ................. to cover wire

When the electric current flows in a complete path , this path is called .....................

The electric energy is changed to light and heat in the ..................

The ............... provides a path for the charges to flow

The ............... turns the current on or off

The ............... is the source of electric current

.................... is the device to control the flow of electricity

The wire that carries the current to and from the light bulb is made of a insulator

A .................. is something made for a particular purpose

All devices that plug into wall outlets need .......................

A .................... is a material that releases energy as heat when it burns

The process of burning a fuel to produce heat and light is called .....................

During combustion, the fuel combines with oxygen

The primary source of energy of almost all fuels is the ..................

The energy that is stored in the fuel as ......................

The new substances that formed from combustion of fuel have as much as chemical energy as the original fuel

We use .................. in a car engine to help car to move

In a coal power plant , the primary source of energy is ...............

In which part of the electrical power plant the coal is burned to produce heat?

When coal is burned its energy change to ............... that turns water into ......................

A ................. is a device that changes energy of motion into electrical energy

The steam returns back to water inside ..................

The ................. is a device that spins as the steam flows and changes heat energy of the steam into energy of motion

As the magnet turns inside generator , an electric current is generated in the wire coil

A ................. stores chemical energy

When you use cell phone or flashlight you need ..................

When we use battery ..................... changes to ...................

................... Are materials that formed as ancient plants and animals decayed underground

The three main fossil fuels are coal , sun , natural gas

Fossil fuels are ................. energy sources

Outcome means ..........................

Burning fossil fuel can cause air pollution and acidic rivers and lakes

A black fossil fuel that is solid and formed from dead plants is ..................

Coal is ........................... energy source

................... Is a liquid fossil fuel formed by the decay of ancient plants and animals

We can use ................... To produce many different products such as plastics , fertilizers and medicines

When plants died and decomposed , they formed layers of ...................

After a very long time , .................. from inside earth and ............... from soil and rocks changed the peat into coal

When plants and animals died and covered by sediment they change to ...................

..................... is a fossil fuel that occurs in the gas state

We can use .................... to produce electricity

The unstable elements produce energy is called ......................

From elements that we use in nuclear power plant

The nuclear energy is ............................. energy source

We burn nuclear elements like fossil fuel to get energy

We can use nuclear energy to generate electricity

Uranium is found underground

...................... Are sources do not run out as we use them

The energy that we use it directly to change it into electrical energy .............................

..................... change the motion of wind to electrical energy

..................... is heat energy obtained from beneath earth’s surface

.................... is the stored energy in plants and their parts

Biomass is ................. energy source

Using the energy of moving water is ..................

By the help of ................ We can generate electricity from water

Wind energy is .......................... energy source

Solar energy is ........................ energy source