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)