To solve the problem of sorting the objects into conductors and insulators, we need to understand the basic properties of each material:
-
Conductors: Materials that allow electric current to pass through them easily. Examples include metals and some liquids like saltwater.
-
Insulators: Materials that do not allow electric current to pass through them easily. Examples include plastics, rubber, wood, and glass.
Let's analyze each object in the image and categorize them accordingly:
Objects:
1.
Wooden stick - Insulator (wood does not conduct electricity)
2.
Paperclip - Conductor (made of metal, which conducts electricity)
3.
Thumbtack - Conductor (metal head and pin)
4.
Eraser - Insulator (rubber or plastic, which are insulators)
5.
Pencil - Partially both (wood is an insulator, but the graphite core is a conductor)
6.
Marble - Insulator (glass or stone, which are insulators)
7.
Electric plug - Conductor (metal parts conduct electricity)
8.
Screw - Conductor (metal)
9.
Coin - Conductor (metal)
10.
Chair - Insulator (wood and fabric are insulators)
11.
Window - Insulator (glass is an insulator)
12.
Teddy bear - Insulator (fabric and stuffing are insulators)
13.
Rain boot - Insulator (rubber is an insulator)
14.
Metal ruler - Conductor (metal)
15.
Book - Insulator (paper and cardboard are insulators)
16.
Spring - Conductor (metal)
17.
Stapler - Conductor (metal components)
18.
Motor - Conductor (metal parts)
Final Sorting:
#### Conductors:
- Paperclip
- Thumbtack
- Electric plug
- Screw
- Pencil (graphite part)
- Coin
- Metal ruler
- Spring
- Stapler
- Motor
#### Insulators:
- Wooden stick
- Eraser
- Marble
- Chair
- Window
- Teddy bear
- Rain boot
- Book
Explanation:
-
Metals (e.g., paperclip, screw, coin) are generally good conductors because they have free electrons that can move easily.
-
Non-metals (e.g., wooden stick, marble, teddy bear) are usually insulators because their electrons are tightly bound and cannot move freely.
-
Mixed materials (e.g., pencil) should be evaluated based on their primary component. In this case, the graphite core is a conductor, while the wooden body is an insulator.
Final Answer:
\[
\boxed{
\text{Conductors: Paperclip, Thumbtack, Electric plug, Screw, Coin, Metal ruler, Spring, Stapler, Motor}
}
\]
\[
\boxed{
\text{Insulators: Wooden stick, Eraser, Marble, Chair, Window, Teddy bear, Rain boot, Book}
}
\]
Parent Tip: Review the logic above to help your child master the concept of insulators and conductors worksheet.
