Objectives:

The student is expected to:

• describe some interactions that occur in a simple system (*5.5B).
  
• interpret how land forms are the result of a combination of constructive and destructive forces (*5.12A).
  
• explain and illustrate the intractions between matter and energy (*6.8B).
  
• describe interactions among weather and ocean systems (*8.10B).
  

* Refers to the Texas Essential Knowledge & Skills for science.