DOL Magnetism 11-11-24

1. Complete the sentence: Magnetism is a force that _________.

• Force caused by gravity
• Force caused by magnetic fields
• Measure of how much matter is in something
• Measure of how much space is in something

2. The north and south poles of two magnets will _______ each other.

• attract
• repel

3. How will the magnets below interact?

• attract
• repeal

4. Why does the owner of an antique store frequently use a magnet to test gold, silver, or platinum jewelry before making a purchase?

• To check the jewelry's weight and density.
• To determine the jewelry's age and historical value.
• To confirm the jewelry's authenticity and purity of precious metals.
• To assess the jewelry's design and aesthetic appeal.

5. Part A Which of the following materials is not attracted to a magnet and is commonly used in aerospace applications due to its non-magnetic properties?

• Aluminum
• Nickel
• Steel
• Cobalt

Part B Explain which one is nonmagnetic and why it can be used in aerospace.