2 Class Starter1) What is energy? 2) Is energy a form of matter? Explain your answer. 3) Try to name 10 different forms of energy.
3 1) What is energy? Energy is the ability to do work. Examples of work accomplished by energy:Making objects moveMaking new chemical compoundsHeating substances..
4 2) Is energy a form of matter? Explain your answer. Energy is not considered to be matter. Matter is anything that has a mass and takes up space (volume). Energy does not have a measureable mass or volume.
5 1) Potential EnergyThe energy an object possesses because of its position above a surface.Potential energy is converted to kinetic energy (moving energy) when an object is dropped.Examples:a pencil on a tablea roller coaster waiting to drop
6 Potential energy being converted to kinetic energy
7 The energy of objects in motion. 2) Kinetic EnergyThe energy of objects in motion.Examples:A bicycle in motionA moving car
17 7) Thermal (heat) Energy The internal energy of an object due to the motion of its particles (atoms and molecules) of matter. The faster the particles move, the warmer the matter can get. Example: Hot water has a lot of thermal energy because it’s particles move really fast.
19 Energy that is released during a chemical reaction 8) Chemical EnergyEnergy that is released during a chemical reactionExamples:The energy in gas turns car engines.Your body uses chemical energy contained in food.
23 Energy produced when matter vibrates 10) Sound EnergyEnergy produced when matter vibratesExample: Sound waves emitted by a speaker vibrate air particles which make the small bones of your inner ear move. This sends a message to your brain which allows you to hear.