For children in Grade 4 learning about Matter and Energy.
From the Curriculum:
Students will become familiar with the properties of light and sound by investigating and observing how these forms of energy interact with various objects in the environment. Materials can be used to transmit, reflect, or absorb light and sound. By exploring the factors that affect sound and light, students will discover ways in which they can be controlled.
Light and sound are forms of energy with specific properties.
Sound is created by vibrations.
Light is required to see.
Technological innovations involving light and sound have an impact on the environment.