SCIENCE UNIT 8 ENERGY Energy Energy is everything that produces changes in things. There are different forms: •
Light.
• •
Mechanical.
• •
Chemical
• A transformation of energy is when one form of energy changes into another.
Energy sources Energy sources are the __________ ___________ from which we obtain the energy we use. They can be ______________ or ___________. We ________ non-renewable energy sources because they do not have time to renew ___________. The main ones are fossil, ________ and radioactive substances. We cannot exhaust renewable energy sources because they renew themselves continually. Some examples are the Sun, ________, moving water and __________.
Forms of energy
__________ energy
______________ energy
_________ energy
Activities 1. Name three different forms of energy. 2. Name three renewable and three non-renewable energy sources.