Fill in the gaps using the words in the Word Bank below:
Energy comes in many different forms, such as thermal, light, sound, ______________________ , electrical and potential energy. It cannot be created or ______________________ , but it can be transferred or ______________________ into a different type. Thermal energy can be ______________________ in three different ways: conduction, ______________________ and radiation. Electrical energy is transferred in electrical ______________________ and then transformed into almost any other form of energy by the ______________________ in the circuit. Most energy transformations also produce by-product energy, most commonly ______________________ , which reduces the ______________________ of the device. Scientific knowledge and technological developments have led to the improvement of energy efficiency, such as the invention of CFLs and ______________________ . Increased energy efficiency means less energy is ______________________ , which is ______________________ for individuals and better for the environment as fewer resources are consumed.
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\begin{array}{lll}
\text { circuits } & \text { efficiency } & \text { more economical } \\
\text { components } & \text { heat } & \text { transferred } \\
\text { convection } & \text { kinetic } & \text { transformed } \\
\text { destroyed } & \text { LEDs } & \text { wasted }
\end{array}
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