Question

Which of the following are likely to be affected by a magnet?

Check all that apply.

A. Credit card
B. A CD
C. An audio cassette tape
D. A wind up alarm clock

Answer 1

A magnet can affect credit cards, CDs, audio cassette tapes, and wind-up alarm clocks.

Step-by-step explanation:

A magnet can affect the following:

• A. Credit card: The magnetism from a strong magnet can erase the magnetic strip on a credit card, rendering it unusable.
• B. A CD: A strong magnet can interfere with the data stored on a CD, causing it to become unreadable.
• C. An audio cassette tape: A magnet can interfere with the magnetic tape inside an audio cassette tape, distorting or erasing the recorded sound.
• D. A wind-up alarm clock: Most wind-up alarm clocks use metal gears, which can be attracted to a magnet.

Answer 2

B and D

Step-by-step explanation:

Both a CD and alarm clock have magnetic properties of metal alloys and polymers.