Weather: Part One

455 views
361 views

Published on

EARTH SCIENCE 10TH GRADE COURSE

FOR ADVANCED MS STUDENTS AND HS STUDENTS TAKING THE REGENTS IN JANUARY, JUNE, OR AUGUST.

Published in: Education
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
455
On SlideShare
0
From Embeds
0
Number of Embeds
0
Actions
Shares
0
Downloads
5
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

Weather: Part One

  1. 1. Created by Tristan Naraine Usage of HOLT Earth Science Textbook
  2. 3. <ul><li>Mechanical Weathering is also called Physical Weathering </li></ul><ul><li>Mechanical Weathering does not reform the mineral composition of any rock. </li></ul><ul><li>The Main Agents Affecting Mechanical Weathering: </li></ul><ul><li>1. Gravity 2. Water 3. Wind 4. Organisms </li></ul>
  3. 5. Ice Wedging & Frost Action <ul><li>In the first step, the water infiltrates. After, the water infiltrates due to temperature & climate reform, the ice freezes. When water freezes and becomes ice the volume increases by 10%. In effect, this creates and exerts high pressure on the rock causing it to break and crack. </li></ul>
  4. 6. The collision of rocks result in the breaking apart and wearing (weathering) of rock material which is called ABRASION.
  5. 8. Abrasion <ul><li>Here is the result and effect of what happens to the collision, falling, and the forces of gravity of rocks when they fall/tumble down slopes. </li></ul>
  6. 9. <ul><li>As plants grow, their roots grow too. </li></ul><ul><li>As they expand they create pressure on surrounding rocks that causes them to wedge apart and crack. </li></ul><ul><li>Animal Activities such as burrowing contribute to mechanical weathering as well. </li></ul>
  7. 10. <ul><li>A Synonym for chemical weathering could be decomposition </li></ul><ul><li>Chemical weathering relates to the chemical reactions or changes that act on minerals in rock and materials. </li></ul><ul><li>Chemical Weathering affects BOTH the physical and mineral composition/appearance of rocks and materials. </li></ul>
  8. 11. Oxidation <ul><li>Process which elements and materials combine and interact with oxygen </li></ul><ul><li>Causes things such as rusting of materials </li></ul><ul><li>Here are some examples </li></ul><ul><li>An Apple Rusting </li></ul><ul><li>A Rusted or Rusting Penny (Coin) </li></ul><ul><li>Rusted Cars or Vehicles </li></ul>
  9. 13. Hydrolysis <ul><li>Chemically Involves and usage of Water (H20) </li></ul><ul><li>Minerals often dissolve water. </li></ul><ul><li>The water then caries minerals to lower layers of rock (similar to what occurs in soil horizons in soil profile) which is called/named leaching . </li></ul><ul><li>Hydrolysis is a crucial role in chemical weathering. </li></ul>
  10. 14. How does Acid Affect Weathering? <ul><li>Carbonic acid which uses carbon dioxide speeds up the process of hydrolysis </li></ul><ul><li>Acids seep (sink into) rocks and produce cracks. </li></ul><ul><li>Acid Precipitation also affects weathering. Acid precipitation is categorized under chemical weathering. </li></ul>

×