An exudate is a fluid emitted by an organism through pores or a wound, a process known as exuding. Exudate is derived from exude, to ooze, from the Latin exsÅ«dÄre, to (ooze) out like sweat (ex- out and sÅ«dÄre to sweat).
Glacial striations on bedrock. Rocks embedded in the bottom of a massive glacier scratched the rock underneath as the glacier moved along. Even though there is no ice present today, these scratched lines are evidence that glaciers were here in the geologic past.lacial striations are parallel to the handle of the hammer. Look at how the lines all go the same direction. Click to Enlarge. About : The scratch marks on the schoolyard are formed by the process shown on top -- a broom dragged along over wet tar.
Once the glacier starts to melt all the sediment that was picked up is deposited. The sediment that is deposited by a glacier is called till. As the till is deposited it can create different landforms. The till that is deposited from the sides of the glaciers are called a moraine. The side of the moraine that has reached the farthest length is called the terminal moraine. As the glacier retreats it can create a kettle. A kettle is a small depression in the ground that forms when a chunk of ice is left in the till.