Problem Overview:
The task involves predicting which objects a magnet will pick up and then testing the prediction by using a magnet. The goal is to fill in two columns: "Prediction" (based on prior knowledge) and "Magnet Picked Up" (based on actual testing).
Key Concepts:
1.
Magnetic Materials: Magnets can attract materials that are ferromagnetic, such as iron, steel, nickel, and cobalt.
2.
Non-Magnetic Materials: Materials like plastic, wood, glass, and paper are not attracted by magnets.
Step-by-Step Solution:
#### 1.
List of Objects:
The objects listed are:
- Nail
- Stick
- Paper clip (metal)
- Paper clip (plastic)
- Tack
- Button (metal)
- Button (plastic)
- Brass fastener
- Penny
- Nickel
- Dime
- Quarter
- Hairpin
- Crayon
#### 2.
Prediction Column:
Based on prior knowledge of magnetic properties:
-
Ferromagnetic Materials: These will be attracted by a magnet.
- Nail (iron)
- Paper clip (metal)
- Tack (iron or steel)
- Button (metal)
- Brass fastener (contains iron or steel)
- Penny (copper with zinc core, but not strongly magnetic)
- Nickel (nickel alloy)
- Dime (copper-nickel alloy)
- Quarter (copper-nickel alloy)
- Hairpin (likely metal)
-
Non-Magnetic Materials: These will not be attracted by a magnet.
- Stick (wood or plastic)
- Paper clip (plastic)
- Button (plastic)
- Crayon (wax and paper)
#### 3.
Testing with a Magnet:
After testing each object with a magnet, the results should confirm or refute the predictions. Typically:
- Metal objects like nails, tacks, metal buttons, brass fasteners, and hairpins will be picked up.
- Coins (penny, nickel, dime, quarter) may show some attraction due to their metallic content but might not stick strongly.
- Non-metallic objects like sticks, plastic paper clips, plastic buttons, and crayons will not be picked up.
#### 4.
Filling in the Table:
Based on the above reasoning, the table can be filled as follows:
| Object | Prediction | Magnet Picked Up |
|-------------------|------------|------------------|
| nail | ✓ | ✓ |
| stick | | |
| paper clip (metal)| ✓ | ✓ |
| paper clip (plastic)| | |
| tack | ✓ | ✓ |
| button (metal) | ✓ | ✓ |
| button (plastic) | | |
| brass fastener | ✓ | ✓ |
| penny | ✓ | ✓ |
| nickel | ✓ | ✓ |
| dime | ✓ | ✓ |
| quarter | ✓ | ✓ |
| hairpin | ✓ | ✓ |
| crayon | | |
#### 5.
Final Answer:
The objects that a magnet will pick up are:
- Nail
- Paper clip (metal)
- Tack
- Button (metal)
- Brass fastener
- Penny
- Nickel
- Dime
- Quarter
- Hairpin
Final Answer:
\boxed{\text{nail, paper clip (metal), tack, button (metal), brass fastener, penny, nickel, dime, quarter, hairpin}}
Parent Tip: Review the logic above to help your child master the concept of magnet worksheet 4th grade.
