Answer:
They are magnetic lines and theses lines depict the invisible magnetic field around the magnet! Hope this helps I got it right on my quiz:)
Explanation:
 
        
             
        
        
        
Answer:
Law of Lateral Continuity The Grand Canyon. 
and
he same rock layers on opposite sides of the canyon. The matching rock layers were deposited at the same time, so they are the same age.
 
        
             
        
        
        
Liquidity metric is the other name
        
             
        
        
        
Answer: Chemical and Potential Energy
Explanation: Im pretty sure that is it i know it is Chemical and Potential Good Luck Hope I helped. =)