A unit on energy, force, and motion presented with interactive and classroom activities. Students gain an understanding of weight, mass, potential and kinetic energy, sound, and heat with this engaging resource.

How does the blackbody spectrum of the sun compare to visible light? Learn about the blackbody spectrum of the sun, a light bulb, an oven, and the earth. Adjust the temperature to see the wavelength and intensity of the spectrum change....

[Free Registration/Login Required] Move the light source to see what happens to the reflected ray as you change the angle of the incident ray.

This digital textbook covers core physical science concepts and includes interactive features, real world examples, and videos.