Q1
What is thermal conductivity?
Thermal conductivity is how well a material transfers heat.
What is electrical conductivity?
Electrical conductivity is how well a material allows electricity to flow.
Which materials have high thermal conductivity?
Metals like aluminum, iron, and copper.
Which materials have low thermal conductivity?
Wood, plastic, and air.
How does high thermal conductivity affect how fast something heats up?
It makes the material heat up quickly because heat moves through it easily.
Which materials have high electrical conductivity?
Metals like copper and silver.
Which materials have low electrical conductivity?
Rubber, plastic, and glass.
Why does a metal spoon get hot in soup?
Because metal transfers heat quickly.
Why does a wooden spoon stay cool?
Because wood slows down heat transfer.
Why are insulators important for both heat and electricity?
They slow or block heat and electricity, helping prevent burns and electric shocks.
Why are cooking pans made of metal?
Because metal spreads heat evenly.
Why do jackets keep us warm?
Because they trap heat and slow heat loss.
Why is copper used in electrical wires?
Because it allows electricity to flow easily.
Why is rubber used to cover wires?
Because it blocks electricity and prevents shocks.
What is the difference between a conductor and an insulator?
A conductor allows heat or electricity to pass through easily, while an insulator resists or blocks the flow.
What happens if a material has low thermal conductivity?
Heat moves through it slowly.
What happens if a material has high electrical conductivity?
Electricity flows through it easily.
Give one example of a thermal insulator.
Wood or plastic
Give one example of an electrical conductor.
Copper or Metal
How do materials with low electrical conductivity improve safety?
They prevent electricity from passing through, reducing the risk of electric shock.