|Key Stage 3
|Describe how living things are classified into broad groups to common observable characteristics..
|The reactants in, and products of, photosynthesis, and a word summary for photosynthesis
|Give reasons for classifying plants and animals based on specific characteristics
|The dependence of almost all life on Earth on the ability of photosynthetic organisms, such as plants and algae, to use sunlight in photosynthesis to build organic molecules that are an essential energy store..
|Recognise that light appears to travel in straight lines
|The similarities and differences between light waves and waves in matter light waves travelling through a vacuum; speed of light the transmission of light through materials: absorption, diffuse scattering and specular reflection at a surface
|Use the idea that light travels in straight lines to explain that objects are seen because they give out or reflect light into the eye
|Use of ray model to explain imaging in mirrors, the pinhole camera, the refraction of light and action of convex lens in focusing (qualitative); the human eye light transferring energy from source to absorber, leading to chemical and electrical effects; photosensitive material in the retina and in cameras colours and the different frequencies of light, white light and prisms (qualitative only); differential colour effects in absorption and diffuse reflection
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