Sound is produced by vibrating objects. Plan, design and create a communication tool. The pitch of the sound can be varied by changing the rate of vibration . Compare different types of sounds based on characteristics such as pitch and volume. Describe how the human ear receives and transmits sound from the environment.
Light travels in a straight line until it strikes an object.
Investigate and describe ways that light can be reflected, refracted, or absorbed by an object. Describe how the human eye receives and transmits light from the environment. B. Electricity and Magnetism 1. Electricity in circuits can produce light, heat, sound, and magnetic effect. Demonstrate and distinguish between static and current electricity.