geology story of white bluffs

checkpoint 1

Geological processes change Earth’s surface over time because in the station physical weathering is trying to show us the breaking of rocks and then moving the sediments. Also, chemical weathering because the chemicals cause a chemical reaction and change the shape/look.

the physical weathering station told us how rocks and other things break down and sediment is carried to a different pace and build up the crust and/or make sedimentary rocks because when you shake the can with a sugar cube it starts sharp-cornered and when you are done there is dust and the sugar cube is smaller and round-edged. the chemical weathering station shows us how chemicals change the surface by causing chemical reactions because before the piece went in the vinegar it was even and no holes but after it went in it had a lot of holes and there was sediment at the bottom.

this explains to us that weathering has an impression on the earth’s exterior over time.

I think what caused this formation is weathering because the stair-step formation is all cracky. This shows that water got into the cracks and then froze. When it froze it made the cracks bigger and then the weight of the all most separate piece is almost of then wind and water took the piece off it gathered on the bottom and the wind blew the smaller pieces further. Also, the picture stats that in the past it was a solid wall because if it was not a solid straight wall then the erosion would make it a flat surface. I wrote down in checkpoint one “

when the water was poured in the first test tube (the one with just dirt) the extra water coming through the hole and it was brown and there was some dirt came out. on the second one, a little more sediment came because some broken down leaves and sticks. the 3rd test tube almost clear because all the roots from the grass held most of the dir in place.

the sugar cube turned round-edged when we (my table group) shook the can with the sugar cube in it. before it was perfect edged, it was somewhat big until it went into the can.” those are some examples on how the white Bluffs are formed.

This is how it looked a little bit into the past. It is almost not a stair looking design because weathering did not break it down enough for erosion to take it.

This is a little farther back and it is much steeper because the water is still trying to ice-wedge and break bigger chunks off to weather it and then erosion to take it and build the land further.

This is a design that takes place a really, long time ago. weathering and erosion haven’t done their thing yet because it is a straight-up cliff instead of a stair-like formation. Also, you can see that it does not curve as much on the top. You may also see that the water level has gone up more.