A ripple tank is a transparent shallow tray of water with a light shining down through it onto a white card below. The light allows you to see the motion of the ripples created on the water's ...

Through experiments using echoes, beams of sound, and various setups, the film illustrates the principles of reflection, refraction, interference, and standing waves. It confirms that sound ...

Sound waves travel at 1,500 m/s in water. The time between sending and receiving a sonar sound pulse that detects a submarine on the seabed is 0.12 s. Calculate how far below the ship the ...

Introduces the concept of light through the character Ray, a personification of light beams. Ray explains the origins of light, its crucial role in visibility, and how it interacts with various ...

Introduce to your students the two simplest types of wave interactions with rocks: reflection and refraction. Ask students to define reflection. They should be able to give simple examples like ...