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What are conductors and

insulators?

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Warm Up

1. In the diagram above, the water in the pan is

changing from a liquid to a gas, or ____.

a. Melting c. condensing

b. freeing d. evaporating

!. What is matter?

a. "he amount of matter something contains.

b. #ver$thing in the universe that has mass andta%es up space

c. "he amount of salt in water 

d. "he amount of space that matter ta%es up.

&. 'tud$ the picture above. When the

sun comes out, the snowman

melts, or changes from ____.

a. solid to liquid

b. liquid to solid

c. gas to liquid

d. solid to gas

(. )uo$anc$ is__________ 

a. "he abilit$ for an ob*ect to float

b. "o form a solution with another

material

c. "he amount of matter somethingcontains.

d. evaporation

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What is a conductor?

+   conductor is something which allows electricit$to flow through.

+  n e-ample of a conductor is / 'cissors / 0aper clip / luminum foil / Iron / 'teel / opper 

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What is a Insulator?

+  n insulator is what ma%es electricit$ from notflowing

+ #-amples of insulators are / otton

 / 0aper 

 / 0lastic

 / 2lass / 3ubber 

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"hese are pictures of

conductors and Insulators

Conductors   Insulators

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4ets demonstrate5.

Materials 6eeded

+ 1.!7volt lightbulb,

+ a matching lightbulb base,+ a 87cell batter$,

+ a banana

+ three pieces of copper wire with the+ insulation stripped off the ends.

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0rocedure

8raw the following picture in $our science

 *ournal.

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4et me demonstrate5

'et up the equipment as shown and tape

the wires to the batter$.

+8oes an$thing happen?

+8oes the banana allow electricit$ to flow throughthe circuit and light the bulb?+Is it a conductor or an insulator? Wh$ or wh$ not?

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 Use of a circuit tester: To test whether thematerial is a good electrical conductor.

 Example of a circuit tester

6ow its $our turn5

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Inquiring Minds Want to 9now:

onductor or Insulator? "hat is the question:

6ow ta%e the bag ofmaterials and spreadthem out in front of

$ou.8raw the following tablein $our *ournal.

 s $ou test each item,

record whether it wasa conductor or andinsulator with a

Item Conductor  Insulator Did thebulblight?

'poon

0aper clip

pencil

3ubberband

eraser 

;oil

6ail

coin

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Step 1: Set up the circuittester as shown above.

Step 2: Place the obectbetween the open ends of thewire.

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 If the bulb lights up, itmeans the material allows

electric current to flowthrough the closed circuit.

 The brighter the bulb, thebetter the conductor ofelectricity is the material.

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6ow write $our conclusion based

on $our investigation5

+ What ob*ects were conductors ofelectricit$? Wh$?

+ What ob*ects were insulators of electricit$?

+ 8id an$ of the conductors have commoncharacteristics?

+ What about the insulators?

+ <ow would %nowing the differencebetween conductors and insulators help$ou in the real world?

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Conductors allow electricit$ flow through them.

onductors are materials that can carr$

electricit$ 7 the$ conduct electricit$. Metal

materials such as copper, iron, steel andaluminum are all good conductors of electricit$.

Insulators do not allow electricit$ to flow through

them. Materials such as wood, plastic, rubberand glass do not carr$ electricit$ and are called

insulators / the$ don=t conduct electricit$.

onclusions5