How Many Times Did the Earth's Magnetic Field Switch from North

question 30

Multiple Choice

How many times did the Earth's magnetic field switch from north to south in the last 10 million years?

• A) many - more than 20 times
• B) seldom - less than 5 times
• C) never

---

Definitions:

Branching Map

A visual representation used to organize complex information into a hierarchical structure with branches, showing relationships between different concepts or elements.

Four-Step Plan

A structured approach involving four distinct phases designed to achieve a specific goal or solve a particular problem.

Active Reading

The practice of engaging with the text through questioning, annotating, and summarizing to enhance comprehension and retention.

Marking

The process of assessing students' work and providing grades or feedback.