Question

after completing the activity, review your answers to the questions you answered in activity 4 and update them as needed.

• what evidence do we have that earth has a magnetic field surrounding the planet?
• can a compass provide the evidence we need?

Explanation:

1. Evidence for Earth's magnetic field includes compass needles aligning with magnetic north, auroras (charged particles interacting with the field), and magnetic minerals in rocks recording past field directions.
2. A compass directly detects the magnetic field by aligning with its lines, thus providing evidence.

Answer:

1. Compass alignment, auroras, and magnetic rock records.
2. Yes, a compass can provide the needed evidence.