atmosphere

conservation                                           

energy         

extinct             

force

geological features             

life cycle

magnetic attraction       

matter                                                         

moon phases (basic four)

natural resources                                       

observe   

offspring                                     

orbit                      

organism

photosynthesis

physical change

physical properties

pollution       

predator                                                                                   

prey                        

rotation

scientific method   

solar system                                                                            

water cycle

weathering