balance                                                                                              

dinosaur                                        

earth gravity                                                                  

environment

freezing                                                                                     

heat                                                                 

light                                                                                           

location                                       

machine                                                                                     

magnet                                                               

mammoth                        

moon                                                                                  

ocean                              

position                                                                                             

prediction                                                                     

properties of light                                                                                

pulling                                                                                                  

pushing                                                        

salt water                                                                                          

sand                                                                 

shelter                                                                                                  

sky                                                                                            

star      

sun's position                                                                                              

sun's size                             

thermometer                                                                                                   

weather patterns (seasons)