Pospisil, Denise

Investigates where sound comes from and how it is created, discussing vibrations and sound waves, and including real-life examples.

Explains the concepts of motion and balance, looks at the connection between them, and discusses the related topics of gravity, friction, momentum, and equal and opposite reaction.

Learn how waves are a transfer of energy and that sound, light, heat and even earthquakes travel in waves. Includes real-life examples and a hands-on activity.

Introduces students in grades five through eight to key concepts in physics, focusing on the characteristics of waves, using visuals and experiments to discuss vibrations, mechanical and electromagnetic waves, transverse and longitudinal waves, amplitude and wave length, frequency, reflection, refraction, diffraction, and interference. Includes review segments.

Introduces students in grades five through eight to key concepts in physics, using visuals and experiments to explain light waves, the electromagnetic spectrum, light behavior, transparency, translucence, reflection, refraction, and colors.

Explores changes in properties of matter, such as melting, freezing and vaporizing.

Presents an introduction to gravity and force, explaining how they impact and shape everything that happens, and showing how the work of Sir Isacc Newton changed the way people look at the world, making concepts like friction and magnetism easy to understand.

Introduces students in grades five through eight to key concepts in physics, focusing on friction, using visuals and experiments to discuss sliding, rolling, and fluid friction, lubricants, friction measurement, wind resistance, static friction, and friction use. Includes review segments.

Introduces the concepts of motion and balance to students in grades five through eight, providing a definition of motion, and discussing balancing forces, relative motion, Newton's three laws of motion, inertia, net force, and other topics. Includes experiments and reviews.

Introduces students in grades five through eight to key concepts in physics, focusing on sound, using visuals and experiments to discuss sound waves, longitudinal waves, amplitude, wavelength and frequency, eardrums, echolocation, the speed of sound, density, and elasticity. Includes review segments.