In today's lesson we did some work on into science. Our aim was to further our knowledge on forms, sources, and energy transformations. ![]() This image above is one of the images I took from the mid challenge quiz. The question is A boy pushes a toy car along the carpet, then let's it go. The car continues to move. This is an example of: I chose the 3rd answer Transfer of energy. ![]() In the picture to the left we can see that all these things contain energy. This is known as the Law of Conservation of Energy. It states that energy cannot be created or destroyed, meaning that the energy in the universe must remain constant. During this lesson we also covered the different ways energy can transfer from one object to another. These different ways are conduction, convection and radiation. Conduction is the passing of energy from one solid object to another. This occurs when you touch a hot object. The object passes its energy directly into your hand. Convection is similar to conduction, however it doesn't occur in solid objects. Convection can only occur in gases and liquids. When one part of a glass of water is heated and the others aren't, the hot water will rise to the top because its increase in energy made it less dense than the rest of the water. These 'convection currents' can also occur in gases. Radiation travels as waves rather than as particles and can therefor travel through a vacuum. Examples of radiation are ultraviolet and infrared. We feel the latter as heat. Lesson Summary:
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AuthorStudent from St Augustine's College in Brookvale, NSW ArchivesCategories![]()
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Photo used under Creative Commons from Tovstonog