A Speaker Uses Three Separate Magnets

question 15

True/False

A speaker uses three separate magnets. One is a permanent magnet, and two are electromagnets.

---

Definitions:

Stretched Pebbles

Elongated pebbles that have been deformed and stretched by tectonic forces in a metamorphic environment.

Anticline

An anticline is a type of fold that is arch-shaped and has its oldest beds at its core, typically resulting from compressional forces in the Earth's crust.

Syncline

A geological structure where rock layers fold downward, creating a U-shaped valley.

Monocline

A geological fold in which all layers are inclined in the same direction, forming a step-like structure in the Earth's strata.