conduction and insulation. conduction the movement of heat, electricity, or sound from one object to...

Conduction and Insulation

ConductionThe movement of heat, electricity, or sound

from one object to another object

Conductors of HeatConductors of heat allow heat energy to pass

through them easily.

Examples of Conductors of heat:• Iron• Copper• Aluminum

The reason why pots and pans are usually made of metal is so the heat from the stove will pass through the metal and cook whatever is inside. Metal is a good conductor of heat.

Conduction of Heat

• http://www.youtube.com/watch?v=77R4arwD8G8

InsulationNot allowing heat, electricity, or sound to pass

through easily

Insulators of HeatInsulators of heat are poor conductors and do

not allow heat to pass through them

Examples of Insulators of heat:• Wood• Plastic• Cloth• Feathers

Most cooking utensils are metal but have plastic grips to insulate the heat from traveling to your hands.

Winter clothes are often made of warm cloth of feathers to insulate you.

Conductors of ElectricityMaterials that allow electricity to move through

them easily.Examples of conductors of electricity:• Copper • Water

Most electrical wires are made of copper because it is a good conductor.

Insulators of ElectricityInsulators of electricity do not allow electricity

to pass through easily.

Examples of insulators of electricity:• Rubber • Plastic

Most electrical wires are covered with plastic or rubber to prevent electrical shock.

Questions

What is conduction?

Allowing heat, electricity, or sound to pass through easily.

What is insulation?

Not allowing heat, electricity, or sound to pass through easily.

How are conductors and insulators different?

• Their functions•Conductors are made of

iron, copper, and other metals• Insulators are made of

rubber, plastic, and cloth

What would we use conductors for?

•Cooking• Light• Sound• Electricity

What would we use insulators for?

•Keeping safe from electrical shock• Staying warm•Keeping drinks cold in a

cooler