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NEL 10.1 Light Energy and Its Sources 291 Thermal energy can heat a metal to such a high temperature that it emits light. This light ranges from dull red to yellow to white and blue-white as the metal gets hotter. The colour of the emitted light indicates when the molten metal is ready to be poured. Light from Phosphorescence
The Sun is the major source of light for the earth. The sun is a massive ball of fire, at the centre of which nuclear fusion produces massive energy. This energy comes out as heat and light.
Identify different forms of energy with examples. Differentiate between kinetic and potential energy. Demonstrate how one form of energy can be converted into other form of energy. Identify that energy is dissipated in atmosphere. Explain that energy is conserved during conversion of different forms of energy.
þ Describe the sources and effects of heat. þ Explain thermal expansion of solids, liquids and gases. þ Explore the effects and applications of expansion and contraction of solids.
The sources of light can then be looked at in two sub categories: Natural light sources and artificial light sources. Both of these types of light sources can either come from hot sources or from cool sources. The organizer below will help you to follow this organization. Light.
• identify situations where different forms of energy such as electrical, heat and light energy are used by the community; • describe different ways in which energy is used by the community — for example, lighting, heating, cooling, transport, computers and industry. Energy and Change Energy and Change Energy and Change Energy and Change
5 gru 2023 · The following worksheet templates are included in this download: KWL chart for sources of heat. Sources of heat find and color worksheet. Name and describe each source of heat energy worksheet. Draw a line to match the source of heat with the definition. Circle the correct source of heat worksheet. Other KWL templates.
