Shrimp tempura is shrimp that has been battered and deep fried according to the tempura method, and it can be eaten as is or used in other dishes. Shrimp rolls typically feature shrimp surrounded by rice and nori, and the method that is used to cook the shrimp isn't always specified.
The shrimp are “stretched shrimp”. The muscles on the underside of the shrimp are cut with small scissors. This allows the shrimp to strecth out straight and longer. This technique is used for ebi shrimp and tempura shrimp to name a couple.