Light - Answers

The 'Year Six Light Answers' sheet provides a comprehensive set of responses to questions about the basic properties of light and how it interacts with objects. For instance, moonlight is described simply as reflected sunlight, highlighting the moon's lack of inherent luminosity. The concept of darkness is defined as the absence of light, and the nature of light's travel is explained as occurring in straight lines. The distinction between luminous and non-luminous objects is made clear, with the former being sources of light and the latter not emitting light on their own.

Further answers delve into the practical applications of light's properties, such as using light rays to explain visibility, the reflection of light in mirrors, and the operation of a periscope. The human eye is noted to contain a convex lens, and students are expected to understand and illustrate how light rays converge upon passing through such a lens. The term 'opaque' is defined as a material characteristic that prevents any light from passing through, leading to the creation of a shadow. The results from Blake and Hunter's investigation into shadows reinforce that the shape of a shadow directly corresponds to the shape of the object casting it. Additionally, the answers provide insights on how to manipulate the size of shadows and the effect of using translucent objects, which allow some light to pass through, resulting in less distinct shadows.