Exogenic Processes with quiz and activity.pptx

weathering and erosion, earth science topic

1. REVIEW

2. LAST MAN STANDING Let’s Play

3. 1. These types of rocks are formed from the solidification of molten rock material (magma or lava). Answer: Igneous Rocks

4. 2. This type of igneous rock is formed when molten rock material solidifies below the surface of the earth. Answer: Intrusive Igneous Rock

5. 3. These are types of rocks that formed through the accumulation, compaction, and cementation of sediments. Answer: Sedimentary Rocks

6. 4. These types of rocks form from the transformation of pre-existing rocks. This transformation can involve changes in the physical and chemical properties of rocks in response to heat, pressure, and chemical reactions. Answer: Metamorphic Rocks

7. 4. These types of rocks form from the transformation of pre-existing rocks. This transformation can involve changes in the physical and chemical properties of rocks in response to heat, pressure, and chemical reactions. Answer: Metamorphic Rocks

8. 5. What is shown in the picture? Answer: Rock Cycle

9. The Rock?

10. What natural cause or process could break the rock into smaller pieces? Why do we have layers of soil on the surface now? Where did these soil layers come from?

11. Lesson Objectives At the end of the lesson, you will be able to: 1. describe how rocks undergo weathering. 2. explain how the products of weathering are carried away by erosion and deposited elsewhere. 3. recognize the importance of weathering and erosion.

12. Unlocking of Terms Exogenic Processes processes that take place at or near the Earth's surface Weathering the breaking down or dissolving of rocks and minerals on the surface of Earth

13. Activity No. 2 Break Me Down

14. Activity No. 2: Break Me Down Materials:   Antacid tablets Spoon Clear plastic cups Stopwatch

15. Activity No. 2: Break Me Down Procedures: 1. Put equal volume of same temperature water into 2 cups. 2. Drop one whole antacid tablet into one of the cups. Record your observation and the time from when the tablet is added (in seconds) until it is completely dissolved and no traces of the tablet is visible. 3. Break one tablet into smaller pieces using the spoon and drop it into the other cup. Record your observation and dissolution time of the tablet. 4. Wash the cups making sure there are no pieces of antacid tablet left. 5. Repeat steps 3 to 5 but this time use hot water. 6. Fill the table with dissolution times (in seconds) they have recorded.

16. Activity No. 2: Break Me Down   Dissolution Time (in seconds) Room Temperature Water Hot Water Whole tablet     Broken tablet    

17. Activity No. 2: Break Me Down Questions: 1. In which setup did the reaction occur most rapidly? In which setup did it occur most slowly? 2. What is the relationship between particle size and speed it takes for the tablet to dissolve? How does this relationship apply to weathering in nature? 3. Based on the activity, how does mechanical weathering contribute to chemical weathering? 4. Compare dissolution times in room temperature water and hot water. What is the relationship between temperature and weathering rate?

18. Mechanical and Chemical Weathering

19. Mechanical Weathering (or physical weathering) occurs when physical processes affect rocks, such as changes in temperature or when the rocks are exposed to the effects of wind, rain and waves.

20. Chemical Weathering the process by which rocks are broken down by chemical reactions. This changes the chemical composition of rocks.

21. Factors of Mechanical Weathering Pressure Due to tectonic forces, granite may rise to form mountain range. When the pressure diminishes, the rock expands, cools, and became brittle and fractured. Temperature Rocks expand and are fractured when expose to high temperature. However, if the temperature drops to 0°C, rocks also expand and fracture. Frost Wedging When a rock has fractures in its surface, water accumulates in the crack and at some point freezes, the ice expands and breaks the rock apart.

22. Factors of Mechanical Weathering Abrasion The breakdown of rocks is caused by impact and friction. This primarily occurs during collision of rocks, sand, and silt due to current or waves along a stream or seashore Plant growth Plant roots penetrate cracks in the rock, expand, and in the long run, break the rock. Human Activities Activities such as digging, quarrying, denuding forests and cultivating land contribute to physical weathering.

23. Factors of Mechanical Weathering Burrowing Animals Animals like rats, rabbits and squirrels excavate into the ground to create a space for habitation.

24. Factors of Chemical Weathering Dissolution dissociation of molecules into ions; common example includes dissolution of calcite and salt Hydrolysis change in the composition of minerals when they react with water Oxidation reaction between minerals and oxygen dissolved in water

25. Activity No. 3 Weather, Weather

26. 1. Frost Wedging

27. 2. Abrasion

28. 3. Human Activity

29. 4. Dissolution

30. 5. Burrowing Animals

31. Activity No. 4: Sandbox Activity

32. How Can You Move the Sand? Activity

33. Weathering vs. Erosion

34. Types of Mass Movement Activity

35. Types of Mass Movement Fall rock free-falls due to undercutting or the free fall of soil. Slide Movement along a plane parallel to the surface. Flow debris moves downslope as a viscous fluid, slow or rapid movement typically after heavy rains.

36. Types of Mass Movement Spread lateral movement of relatively coherent earth materials resting on a weaker substrate that is subject to liquefaction or plastic flow. Topple involve the forward rotation and movement of a mass of rock, earth or debris out of a slope.

37. Fall

38. Spread

39. If you are sleeping inside a two-story house with yout family and pets and a landslide occurs nearby. What will you do?

40. Activity 5: Modified True or False 1. Topple

41. Activity 5: Modified True or False 2 . Flow

42. Activity 5: Modified True or False 3. Fall

43. Activity 5: Modified True or False 4 . Spread

44. Activity 5: Modified True or False 5. Fall

45. THANK YOU!

46. Dynamic delivery Learn to infuse energy into your delivery to leave a lasting impression One of the goals of effective communication is to motivate your audience Metric Measurement Target Actual Audience attendance # of attendees 150 120 Engagement duration Minutes 60 75 Q&A interaction # of questions 10 15 Positive feedback Percentage (%) 90 95 Rate of information retention Percentage (%) 80 85

47. Final tips & takeaways Consistent rehearsal Strengthen your familiarity Refine delivery style Pacing, tone, and emphasis Timing and transitions Aim for seamless, professional delivery Practice audience Enlist colleagues to listen & provide feedback Seek feedback Reflect on performance Explore new techniques Set personal goals Iterate and adapt

48. Speaking engagement metrics Impact factor Measurement Target Achieved Audience interaction Percentage (%) 85 88 Knowledge retention Percentage (%) 75 80 Post-presentation surveys Average rating 4.2 4.5 Referral rate Percentage (%) 10 12 Collaboration opportunities # of opportunities 8 10

49. Thank you Brita Tamm 502-555-0152 [email protected] www.firstupconsultants.com