Lesson 1: Diver

The oceans and seas are huge, and curious humans love to explore! Divers need to go deep in the water and fight against the urge to float. Engineers have designed special devices to help divers dive and breathe underwater. Let’s explore why some objects float and others think.

In this lesson, we will explore the underwater world of diving. We will familiarize ourselves with density and how it affects why things float and sink. We will also learn how pressure affects things underwater. So put on your SCUBA gear and let’s dive in!

Lesson Keywords

Diver: a person who stays underwater for long periods of time by having air supplied from the surface or by carrying a supply of compressed air

Density: how tightly matter is packed inside an object

Buoyancy: the ability or tendency of something to float in water or other fluid