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International Baccalaureate (HL) Topic 8 : Energy Classroom Assignment 1 Definition: Energy is the ability to do work. And a very good definition of work is: Work is the transfer of energy. _______________________________________________ There are two main types of energy Kinetic Energy : The energy of motion Potential Energy : Stored or positional energy Before we look at these in more depth, we need to consider the many forms of energy that we utilise in our everyday lives. Q1. Briefly describe the following types of energy. Mechanical Energy Electrical Energy Chemical Energy Heat Energy Sound Energy Light Energy Q2. Energy cannot be destroyed, but it can be converted from one form to another. Give 3 examples. Q3. Whilst energy cannot be destroyed, it is often wasted. Give some examples where energy wasted. Q4. Briefly describe why it is impossible to create machines that are 100% efficient (with NO energy loss). Sources of Energy Q5 . Sources of energy are often divided into renewable and non-renewable. Briefly describe where mankind currently gets most of its energy and why this is unsustainable (in the long term) Q6. The following website provides some good information about energy. http://www.learnaboutenergy.org/renewable_energy/RenewableEnergy3.htm Using this website as a resource, briefly describe the following types of renewable energy Hydro Power Biomass/Bio Energy Geothermal Wind Power Photovoltaics