The amount of potential energy something has depends on its position and its mass
There are many different forms of energy: electrical, light, thermal, sound, chemical, solar and nuclear are some
Chemical, nuclear, and solar energy can be changed into electrical energy
The total amount of energy in a system is always the same; energy cannot be created or destroyed
There are many different kinds of waves: light, sound, mechanical, infrared, x-ray, radio, microwave, and ultraviolet are some
Energy from the sun is used to produce almost all the food on Earth
Smooth surfaces reflect light better than rough surfaces
A rough, dark surface absorbs most light
Required Readings and Lessons (Chapter 14)
Lesson 1: What are Some Forms of Energy?
Lesson 2: What are Waves?
Lesson 3: How Does Light Behave?
Unit Vocabulary energy potential energy kinetic energy law of conservation of energy wave wavelength amplitude frequency electromagnetic spectrum reflection refraction diffraction transparent translucent opaque