5è nivell:5è nivell:Science class:

What is energy?

Two forms of energy:• Heat• Light

Experiment :

Heat energy moves

• Problem: Which spoon will get hot the fastest?

• Materials:

You will need:» hot water» a large bowl» a metal spoon» a plastic spoon» a wooden spoon or stick

Procedure:Procedure:

1.The students feel each object (the metal, the plastic and the wooden)

2.Pour hot water in a bowl3.Put all three objects into the water4.Which spoon handle warms up the fastest?

1.Why did the metal spoon warm up the fastest?

Because metals are good conductors of heat

Discussion

Conductors ans insulators Conductors ans insulators materialsmaterials

• Introduce the words conductor and insulator.

A conductor material is something which allows electricity and heat to flow through.

Conductor materials:

Scissors

Paper clip

Aluminum

Iron

Steel

Copper

Gold

Silver

• An insulator material is what makes heat and electricity from not flowing.

• Examples of insulators are:

– Cotton

– Paper

– Plastic

– Glass

– Rubber

Why do people use a wooden Why do people use a wooden spoon instead of a metal spoon spoon instead of a metal spoon when they are cooking?when they are cooking?

• Because: A wooden spoon doesn’t allow to flow the heat.

• Remember:People never use a metal spoon when they are cooking .

Experiment :Light energyExperiment :Light energy• Light is another form of energy.

Question

• WHAT THINGS PRODUCE LIGHT?

THE SUN IS THE MAJOR THE SUN IS THE MAJOR SOURCE OF LIGHT FOR THE SOURCE OF LIGHT FOR THE

EARTHEARTH