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TRANSCRIPT
Conduction and Insulation
Conduction
The movement of heat, electricity, or sound from one object to another object
Conductors of Heat
Conductors 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
Insulation
Not allowing heat, electricity, or sound to pass through easily
Insulators of Heat
Insulators 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 Electricity
Materials 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 Electricity
Insulators 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