buoyant ascent (hydrodynamics)

Introduces the physical properties of objects that sink or float and offers examples of them in everyday life, along with simple experiments to try at home.

Presents an introduction to how things float, in simple text with illustrations, describing the scientific principles at work.

Presents an introduction to the concepts of sinking and floating, in simple text with illustrations, explaining how density and shape impact whether an object will sink or float.

Uses simple experiments and activities to explore concepts such as density, upthrust, and water displacement and to explain why objects float or sink.

Uses simple experiments and activities to explore concepts such as density, upthrust, and water displacement and to explain why objects float or sink.

Explains to children why some objects float and some sink.

Presents an introduction to the concepts of sinking and floating, in simple text with illustrations, explaining how density and shape impact whether an object will sink or float.

Describes the basic properties of materials, contrasting things that float and things that sink, and includes photographs, a picture glossary, and a quiz.

Offers a brief description of the science of floating and sinking.