Chapter 4: Diving Science
light bending in water
diver buoyancy
scuba tank pressure
What We'll Cover
This chapter includes the following lessons:

The Air Divers Breathe
In this lesson, you'll learn about the contents and density of the air we breathe.

Water Density
The increased density of water changes the way we move, how objects appear, and the rate we lose body heat.

Buoyancy
This lesson will cover the factors that determine whether an object floats, sinks, or hovers.

Pressure Underwater
Pressure increases as you descend. In this lesson you'll learn how to calculate pressure changes, and how those changes affect air volume and density.