2. UNIT GOAL: IN THIS SCIENCE UNIT, YOU WILL LEARN ABOUT THE FEATURES, PROCESSES, AND CHANGES IN EARTH’S LAND AND OCEANS. Landforms and Oceans Unit

3. Natural Processes Affect the Earth MAIN IDEA: EARTH’S OCEANS AND LAND CAN BE AFFECTED IN CONSTRUCTIVE AND DESTRUCTIVE WAYS BY NATURAL PROCESSES. Lesson 1

4. Ways Earth Can be Affected Constructive (processes that CREATE landforms) Destructive (processes that DESTROY landforms) depositionweathering landslides (creates and destroys)erosion volcanic eruptions (creates and destroys) earthquakes floods (creates and destroys)landslides (creates and destroys) volcanic eruptions (creates and destroys) floods (creates and destroys)

5. weathering deposition landslide erosion

6. Natural Process Weathering Weathering is the process of breaking down rocks at or near the surface of the earth. This makes the surface of the earth dissolve, decompose, and break into smaller pieces. Water is an important cause of weathering. Plants cause weathering when roots break apart rock.. Weathering can be either physical or chemical. Changes in temperature can break rock (even ice forming inside cracks).

7. Weathering

8. Natural Process Erosion Erosion is the movement of sediments and soil by: Wind Water Ice and gravity

9. Erosion

10. Natural Process Deposition Deposition is the dropping (or depositing) of sediments by water, wind, or ice. Deposition builds up new land on Earth’s surface (such as a pile up of sand dune in the desert) Shells on the beach are deposition by ocean waves.

11. Deposition

12. Natural Process Landslides Landslides are mass (very large) movements of land due to gravity. They can cause buildings to fall, or power and gas lines to break. Landslides even occur on the continental slope in the ocean!

13. Landslides

14. Natural Process Volcanic Eruptions Volcanoes are mountains with openings in Earth’s crust through which Magma Gases and ash reach Earth’s surface. Volcanoes can change Earth’s surface. When magma erupts from the volcano the op of the mountain can be changed (either built up or exploded off). The lava and ash can destroy forests and bury fields. Volcanic eruptions can even change Earths’ weather patterns. Eruptions also occur under the oceans – when they are built up, they are call seamounts.

15. Volcanic Eruptions

16. Natural Process Floods Foods occur when a large amount of water covers land that is usually dry. Rapid erosion can take place and move soil and sediments away. When the flood recedes, new sediment is left behind and can build up rich soil deposits.

17. Floods

18. Quiz Time Do YOU know your natural processes? We shall soon see!

19. NATURAL PROCESSES QUIZ I KNOW THIS THIS STUFF IS EASY GIVE ME A HARDER QUESTION 1 1 1 2 2 2 3 3 3

20. I KNOW THIS FOR 1 A landslide is a type of: a.) floodflood b.) constructive processconstructive process c.) erosionerosion d.) weathering processweathering process

21. YOU’VE GOT IT!

22. NOPE, TRY AGAIN!

23. THIS STUFF IS EASY FOR 1 A sand dune in the desert and shells on a beach are caused by: a.) weatheringweathering b.) erosionerosion c.) earthquakesearthquakes d.) depositiondeposition

24. MAYBE NEXT TIME!

25. I KNOW THIS FOR 2 The movement of sediments and soil by wind, water, ice, and gravity is: a.) a type of flooda type of flood b.) an earthquakean earthquake c.) erosionerosion d.) a landslidea landslide

26. ALMOST HAD IT!

27. THIS STUFF IS EASY FOR 2 A ________ causes rapid erosion while moving soil and sediments away. a.) landslidelandslide b.) volcanic eruptionvolcanic eruption c.) floodflood d.) constructive processconstructive process

28. WELL, TRY AGAIN!

29. GIVE ME A HARDER QUESTION FOR 1 Earth’s land and oceans can be affected by: a.) constructive and destructive processes b.) matter and antimatter c.) radio and ultraviolent rays d.) propaganda and author’s bias

30. YOU ALMOST HAD IT!

31. GIVE ME A HARDER QUESTION FOR 2 __________ can be physical or chemical. a.) ErosionErosion b.) WeatheringWeathering c.) LandslidesLandslides d.) Constructive processesConstructive processes

32. NOPE, TRY AGAIN!

33. I KNOW THIS FOR 3 Vibrations on Earth’s surface are called: a.) floodsfloods b.) earthquakesearthquakes c.) weatheringweathering d.) volcanic eruptionsvolcanic eruptions

34. NOT QUITE!

35. THIS STUFF IS EASY FOR 3 Deposition and floods are part of: a.) weatheringweathering b.) constructive processesconstructive processes c.) erosionerosion d.) global warmingglobal warming

36. NOPE, TRY AGAIN!

37. GIVE ME A HARDER QUESTION FOR 3 Weathering, erosion, and earthquakes are all part of the __________ process. a.) destructivedestructive b.) deductivedeductive c.) constructiveconstructive d.) inductiveinductive

38. NOPE, TRY AGAIN!