1. By: Mia Delos Reyes and Katrina Dumlao
Weathering/erosion
By: Mia Delos Reyes and Katrina Dumlao

2. Definition of Weathering
Weathering breaks down materials into smaller pieces and breaks down human-made construction. It can be caused by physical forces and chemical reactions

3. Definition of Mechanical Weathering
Mechanical weathering is physical forces that breaks down rocks into smaller pieces

4. Ice Wedging
Ice wedging happens when rain or any liquid gets in a rock crack. The water will freeze during the colder months putting so much pressure and it evenly widen.

5. Wind
Sand and tiny rocks transported by the wind has the same development as sandpaper as they scrape the outer layer of the rock.

6. Glaciers
Glaciers will slowly go down the hill scrapping, trapping and tearing apart the rock beneath it.

7. Water
Fast flowing water will rub against the surface of the rock making it smooth.

8. Chemical Weathering
Chemical weathering is caused by a chemical reaction happening with water, air, the materials in rocks or another material. It can weaken or break down some of the stuff in it.

9. Water
Water dissolves some of the rocks materials and if the water has any human made acids it will make the rocks disintegrate quicker.

10. Pollutants
Pollutants can make the air create acid precipitation that can disintegrate more stuff than rain.

11. Air
The oxygen in air can weaken any iron in substances in rocks.

12. Biological Weathering
Biological weathering can sometimes make living things such as plants cause physical forces and chemical reactions.

13. Lichens
Lichen develops on rocks and uses its goods as food, and creates a acid that disintegrates and damages the rock.

14. Plants
Some plants can grow in rocks. The plants root will expand the rock causing it the break or make a crack.

15. Erosion Erosion is a movement of rock components moving
one place to another

16. Erosion Erosion can happen swiftly by a landslide going
down a mountain
and can appear
slowly by waiting
hundreds or
thousands of years

17. Gravity Gravity is a type of erosion
that can make avalanches and rock falls.

18. Example of Gravity
A landslide close to Hope,
British Columbia sent
millions of rocks down
the mountain towards
the valley beneath it.

19. Wind
Wind will carry dust, sand or dirt for numerous kilometers. The particles in the wind will be dropped when the wind loses its pace. Wind will carry dust, sand or dirt for numerous kilometers. The particles in the wind will be dropped when the wind loses its pace.

20. Example of wind In some beaches, deserts or any place
with sand, wind will
pick up dehydrated,
loosened sand and
drop it off in piles
called dunes.

21. Water Water moves tons of rocks from the land it cuts across and
carries sediment, while
its doing that it makes
a very deep valley.

22. Example 2 of Water
The Fraser River carries billions of rocks to places and as its doing that the river goes through the land making a deep deep valley.

23. Example of Water In a delta, the water usually breaks into a total
of tinier pathways
and is separated
by a segment of sediment.

24. Ice Layers of snow are being pressed together and the
pressure moderately
starts to turn the
snow into ice

25. Example of Ice The weight of the ice size makes the glacier
go down hill and the rocks and
dirt that are frozen inside the
ice travel with the glacier will be lugged for tons of kilometers before being deposit into a different place when the glacier begins to disintegrate.

26. Example 2 of Ice When rivers of ice is carried down mountainsides
they destroyed the
U-shaped valley
and along the shore, most of the valleys were brimming with seawater after the glaciers disintegrated