Question

Question 5
Magnetic metals include aluminum, copper, and gold.

True
False
Question 6
Which of the following are uses of magnets/magnetic fields (Select all that apply)

a
Bird Migration
b
Creating energy
c
Maglev train
d
MRI machines

Answer 1

Question 5: False.
- Aluminum, copper, and gold are not ferromagnetic (they are weakly paramagnetic or diamagnetic). Typical magnetic metals are iron, nickel, and cobalt.

Question 6: a, b, c, d (all apply).
- a) Bird migration: many species sense and use Earth's magnetic field for navigation.
- b) Creating energy: magnets are used in generators/alternators to convert mechanical motion into electrical energy.
- c) Maglev trains: use magnetic levitation and propulsion.
- d) MRI machines: use strong magnetic fields for medical imaging.