Today’s Agenda… Get clickers before you sit down Bellringer: Mixtures do not have substances in fixed amounts. Explain what this means. Notes on Energy – Study Pack #1 Discuss Energy Worksheet from yesterday – Study Pack #2
Energy Study Pack #1
Today’s Goals… I can explain what energy is. I can identify different forms of energy. I can explain the law of conservation of energy.
What do you already know? True or False Energy can cause changes in the environment There are many types of energy Energy can move from one object to another When one type of energy is transformed into a new form, some of the energy is lost
What is energy? Energy is the ability to cause change Examples on page 162 Energy can cause chemical changes to occur Energy can change your motion and help you to do work
Forms of Energy Energy occurs in many forms Kinetic, potential, thermal, chemical, nuclear, mechanical, light, electrical
Energy Transfer and Transformations Energy can be transferred (moved) from place to place and object to object Energy can be transformed (changed from one type of energy to another)
Energy Transfer and Transformations Energy is stored in your muscles as chemical energy, when you push down on a bicycle pedal the energy is transferred to the bicycle and transformed into energy of motion Other examples on page 163
Law of Conservation of Energy Energy CANNOT be created or destroyed It can only be changed from one form to another and the amount stays the same Sometimes energy appears to have been “lost” when heat is produced, but actually it has only been changed into thermal energy
Law of Conservation of Energy When a book slides across the table and eventually stops, it seems to have “lost” energy, but the energy of motion was just changed to the energy of heat
ENERGY WORKSHEETS
What did you learn? True or False Energy can cause changes in the environment There are many types of energy Energy can move from one object to another When one type of energy is transformed into a new form, some of the energy is lost