Answer:
Work cause a change in kinetic energy
 
        
             
        
        
        
It is true
I hope this helps
        
             
        
        
        
Answer:
False
Explanation:
A wave is a disturbance that transfers energy from one place to another without transferring matter. 
 
        
                    
             
        
        
        
Answer:
No sand doesn't stay sand forever. 
Explanation:
- We may have a thought that the sand we see on the beach areas are always the same one for eternal, but it is not true.
- Due to different activities like beach nourishment, sand replenishment etc. the sand in the beach areas are changed and replaced.
- If the sand remained there for long time, it also affects the sand eating organisms and plants.