Types of Energy
_________ energy is the only form of energy we can see.
Light Energy
a path through which electric current can flow
circuit
a ___________ is a material that transfers heat or electricity easily.
conductor
Depends on the motion of tiny particles in matter; the faster the particles move, the warmer, the substance gets and the more __________ energy it has.
Thermal Energy
Weight is a form of energy
false
__________ energy is transferred when a sound wave travels from its source, like a drum, to another object.
Sound Energy
a flow of electricity through a conductor
electric current
An __________ is a material that stops or slows the flow of energy, such as electricity or heat.
Insulator
the original or first model of something from which other forms are copied and developed.
Prototype
You can use energy to ride your bike, play video games bake cookies and drive to school.
true
What type of energy transfer causes things, like ice cubes, to melt?
thermal energy
a device that can open or close a circuit
switch
Wood, glass, and plastic are examples of ___________
Insulators
a device that uses light or heat from the sun to produce electricity
Solar Cell
A cup of cold water has more thermal energy than a cup of boiling water.
false
Pressing a doorbell is _________ energy.
elastic
Which object is a source of electric energy in the closed circuit?
battery
Metals, such as copper, gold, iron and silver are good _________ of electricity.
conductors
the ability to do work.
Energy
Energy can be transferred from one object to another, and energy can be transferred into different forms, such as light, sound, and heat.
true
The sun beaming through the window is _________ energy.
light energy
The wires to devices in a home are plugged into the home's electric ___________.
circuits
Wires and outlets are covered in plastic because plastic acts as an _________ . This help keeps you from coming into contact with the electrical current.
Insulator
the transfer of thermal energy between two objects that are touching.
Conduction
When you plug a device that uses electricity into a wall outlet, you are making that device part of a circuit.
True