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Journal 11/12/13

Journal 11/12/13. The world is made of matter and energy. Come up with a definition for both of these terms. Objective Tonight’s Homework. Properly identify the kind of energy each object makes and uses on the next slide. To learn how we define energy and what different kinds exist.

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Journal 11/12/13

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  1. Journal 11/12/13 The world is made of matter and energy. Come up with a definition for both of these terms Objective Tonight’s Homework Properly identify the kind of energy each object makes and uses on the next slide To learn how we define energy and what different kinds exist

  2. Activity: What is Energy? Does a bonfire have the same kind of energy as a bullet fired from a gun? Of course not! But what kind of energy does it have? We’re going to start class with an activity to answer this. Your job is to do the following: - First, get into groups of threes. - Second, on the next slide, you’ll see 30 different items. Each of these items has something to do with energy. Your job is to classify and sort them. Come up with groupings of “types of energy” and put items in their places. Mr. C. wants you to come up with between 5 and 10 categories for types of energy.

  3. Activity: What is Energy?

  4. Notes on Types of Energy Energy is what causes forces. It’s what causes things to change. - Energy can be stored - Energy can move - Energy can change types

  5. Notes on Types of Energy Energy is what causes forces. It’s what causes things to change. - Energy can be stored - Energy can move - Energy can change types It’s important to note that it doesn’t matter how energy changes type or how often. The total amount of energy in the Universe will always stay the same. This is the theory of conservation of energy.

  6. Notes on Types of Energy When looking at energy, we can break it down into roughly 7 categories: Nuclear – Fission, Fusion This is the energy released from the nucleus of an atom when it’s fused or split apart. This energy comes from something called the “strong nuclear force”.

  7. Notes on Types of Energy Electrical – Electricity, Moving Charge This is the energy that comes from moving electrons. In large quantity, this creates electricity.

  8. Notes on Types of Energy Mechanical – Kinetic, Potential, Spring This is the energy of moving objects or objects that have the ability to move. Potential energy is energy that’s been “stored up” and is ready to release. Kinetic energy is the energy of something in motion.

  9. Notes on Types of Energy Chemical – Food, Chemicals, Batteries This is the energy stored in the bonds between atoms. When a molecule is broken up, it usually releases energy in the form of motion, heat, or light.

  10. Notes on Types of Energy Thermal – Heat Thermal energy is the energy of heat. Heat is simply the vibration of molecules in an area. The more heat they have, the more they vibrate.

  11. Notes on Types of Energy Sonic – Sound Similar to heat, sound is a vibration of molecules. However, this is a vibration that becomes a wave. Sound waves usually cause pressure changes that we interpret as sound.

  12. Notes on Types of Energy Radiant – Light, Radiation All forms of light carry energy with them. We call this radiant energy. You’ve felt this kind of energy if you’ve ever felt the heat from a fire on your skin.

  13. Exit Question #35 Which of the below has the most mechanical energy? a) A bonfire b) A coffee maker c) A bicycle d) A floodlight e) A car f) None of these have mechanical energy

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