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Science 10 - Unit B: Energy Flow in Technological Systems (Science and Technology Emphasis) 2. Explain and apply concepts used in theoretical and practical measures of energy in mechanical systems. How are Egrav, W, mgh and E related? How does force contribute to work? What is acceleration? Define How does potential energy (Ep) become kinetic energy (Ek) and vice versa? Investigate & Analyze What evidence is there for the presence of energy? Define Quantify How can you break the joule into its fundamental units? Describe What types of energy Derive exist around us? What is gravitational potential energy? How can graphs be used to illustrate relationships between distance, time, speed and force? Define What is chemical energy? Describe Describe Define, Compare, Contrast Investigate & Analyze Explain How is the motion of an object affected by energy? Define, Compare, Contrast What are the differences and similarities between scalar and vector quantities? How do displacement and velocity differ from distance and speed? What are the similarities and differences between kinetic and potential energy?