PIRA Code(s): 3A10.40 Set up time:none Operation: Push the pendulum so that it swings back and forth at an angle of about 0 º. Then, slowly increase the angle, and watch the frequency decrease. For a more effective demonstration, start the pendulum at a relatively high angle, and then decrease the angle of the plane of oscillation so that the frequency of the pendulum will increase over time. Physics and Science Concepts: Oscillations Safety: None
PIRA Code(s): 3A20.80 Set up time:1 minute Operation: Shake the cup to send large waves down the spring and create sounds similar to whale songs or star trek laser blasts. Speak into the cup and the spring will create an echoing effect. Physics and Science Concepts: Oscillations and Waves Safety: Do not hyperextend slinky.