Energy Transformation 1 PRESENTED BY MS PRIYA Brief

Energy Transformation 1 PRESENTED BY: MS. PRIYA

Brief About Energy 2 �Energy is capacity to do work. �The international recognized unit for energy is the Joule (J), named after James Joule �There are several energy sources around us that provide us with energy. For example: coal, oil, wood, sun, food, gas, wind.

Renewable energy and Nonrenewable energy 3 Renewable energy and Nonrenewable energy �Renewable energy : can be used many times. For example: wind, air. �Non-renewable energy: can be used only once. For example: coal, oil, fuel.

Law Of Conservation Of Energy 4 �Any form of energy can be transformed into another form. The process of energy transformation is also known as energy conversion �Energy doesn't disappear - just changes the forms. �Energy transformation is the process of changing energy from one form to another. This process is happening all the time �Law of conservation of energy states that energy can change form, but it cannot be created or destroyed, that means the total amount of energy stays always the same.

Energy transformation 5

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Example 1 A man throwing a book 8

Renewable & Non- renewable energy 9

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QUESTION AND ANSWERS 11 What energy transformation takes place when you turn on an electric light. a. Electrical energy Light energy 1. 2. What does your body convert into energy? Water or Air 3. The law of conservation of energy state that energy cannot be created or ______destroyed_______.

12 4. Complete the chart for energy transformation that occur in different devices Device Starting energy Changes to Battery a. _Chemical energy_ Electrical energy Hair dryer Electrical energy b. __Heat energy___ Car engine Chemical energy c. _Mechanical energy Fireplace d. _Chemical energy_ Heat and light energy Fan Electrical energy e. _Mechanical energy Drum f. Kinetic Energy Sound energy