Radiation Student activity Play

Radio Animation Play

Radio telescopes Slideshow Play

Radio waves Animation Play

Radio waves Student activity Play

Radio waves Student activity Play

Radio waves Whiteboard exercise Play

Radio waves Chart Play

Radio waves Whiteboard exercise Play

Radio waves and microwaves Student activity Play

Radioactivity Student activity Play

Reflection and refraction of waves Whiteboard presentation Play

Reflection and refraction of waves Whiteboard presentation Play

Reflection and refraction of waves Class activity Play

Reflection and refraction of waves Class activity Play

Reflection of a wave Student activity Play

Reflection of a wave Animation Play

Reflection of a wave Whiteboard exercise Play

Reflection of plane waves Whiteboard exercise Play

Reflection of plane waves Animation Play

Reflection of plane waves Student activity Play

Refraction of plane waves Animation Play

Refraction of plane waves Student activity Play

Relationship between the wavelength and the energy of an electromagnetic wave Animation Play

Renewable and non-renewable sources of energy Student activity Play