1. Erosion
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2. Erosion

3. What is Erosion?
Erosion is a natural process which is usually made by rock and soil being loosened from the earth's surface at one location and moved to another. Erosion changes the landscape by wearing down mountains, filling in valleys, and making rivers appear and disappear. It is usually a slow and gradual process that occurs over thousands or millions of years.

4. Igneous rock
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5. Obsidian rock

6. What is igneous rock
The eruption of a volcano is an awesome process. Unfortunately, (or fortunately!) most of us will never experience it in our lifetime. But we might have the opportunity to see the products of volcanic processes while driving across country or hiking in the woods. Volcanic rocks, the solidified products of volcanic eruptions are part of a larger group of rocks called igneous rocks.

7. Metamorphic rock
Created when other kinds of rocks are changed by great heat and pressure inside the earth. Marble, slate and quartzite are examples of metamorphic

8. Metamorphic rock
Metamorphic rocks are rocks that have "morphed" into another kind of rock. These rocks were once igneous or sedimentary rocks. How do sedimentary and igneous rocks change? The rocks are under tons and tons of pressure, which fosters heat build up, and this causes them to change. If you exam metamorphic rock samples closely, you'll discover how flattened some of the grains in the rock are Metamorphic rocks are rocks that have "morphed" into another kind of rock. These rocks were once igneous or sedimentary rocks. How do sedimentary and igneous rocks change? The rocks are under tons and tons of pressure, which fosters heat build up, and this causes them to change. If you exam metamorphic rock samples closely, you'll discover how flattened some of the grains in the rock are
Metamorphic rocks are rocks that have

9. Sedimentary rock
Metamorphic rocks are rocks that have "morphed" into another kind of rock. These rocks were once igneous or sedimentary rocks. How do sedimentary and igneous rocks change? The rocks are under tons and tons of pressure, which fosters heat build up, and this causes them to change. If you exam metamorphic rock samples closely, you'll discover how flattened some of the grains in the rock are

10. Chemical weathering – acid rain

11. Chemical weathering-acid rain
The extra acidity in rain comes from the reaction of air pollutants, primarily sulfur oxides and nitrogen oxides, with water in the air to form strong acids (like sulfuric and nitric acid). The main sources of these pollutants are vehicles and industrial and power-generating plants. In Washington, the main local sources are cars, trucks, and buses.

12. Rock race’s sand Potting soil Clay soil gravel Trial 1 4 sec 56 sec

13. Size of particles
I think that the first one is gravel because it took 1 sec to deposit. The second one is sand it took 4 sec to deposit. The third one is clay it deposited in 7 sec. The last one was potting soil. It took 58 sec to deposit

14. Is it inclined to erode? Height of stream table
Number of grid squares covered by eroded sand
Erosion ranking (highest to lowest)
4cm
8 squares
Third
8cm
10 squares
Second
12cm
16 squares
First

15. Volcano

16. valcano
A volcano is an opening, or rupture, in a planet's surface or crust, which allows hot, molten rock, ash, and gases to escape from below the surface. Volcanic activity involving the extrusion of rock tends to form mountains or features like mountains over a period of time.
Volcanoes are generally found where tectonic plates are diverging or converging. A mid-oceanic ridge, for example the Mid-Atlantic Ridge, has examples of volcanoes caused by "divergent tectonic plates" pulling apart; the Pacific Ring of Fire has examples of volcanoes caused by "convergent tectonic plates" coming together. By contrast, volcanoes are usually not created where two tectonic plates slide past one another. Volcanoes can also form where there is stretching and thinning of the Earth's crust (called "non-hotspot intraplate volcanism"), such as in the African Rift Valley, the Wells Gray-Clearwater volcanic field and the Rio Grande Rift in North America and the European Rhine Graben with its Eifel volcanoes.
Volcanoes can be caused by "mantle plumes". These so-called "hotspots" , for example at Hawaii, can occur far from plate boundaries. Hotspot volcanoes are also found elsewhere in the solar system, especially on rocky planets and moons.

17. Volcano I wouldn't like to live by one because
it could erupt and we could die because the lava is extremely hot.