Kettles are formed when a chunk of ice from the glacier is left behind and sediment surrounds the sides.
(Kettles; are formed; T:when a chunk of ice from the glacier is left behind and sediment surrounds the sides) (a chunk of ice from the glacier; is left; behind) (sediment; surrounds; the sides)
Kettles a chunk of ice from the glacier sediment
are formed is left surrounds
T:when a chunk of ice from the glacier is left behind and sediment surrounds the sides
behind
the sides