earth science stem 11 stratisfied rockss

how they move

1. HOW LAYERS OF STRATISFIED ROCKS ARE FORMED?

2. LET'S PLAY A GAME!

3. ARE YOU READY?

4. + = ?

5. ANSWER: SANDSTONE

6. + = ?

7. ANSWER: LAYERS

8. + = ?

9. ANSWER:WEATHERING

10. + = ?

11. ANSWER: PRESSURE

12. + = ?

13. ANSWER: DEPOSITION

14. 1.DEFINE STRATISFACTION 2. DESCRIBE THE PROCESS ON HOW STRATISFIED ROCKS ARE FORMED. OBJECTIVES:

15. STRATISFACTION STRATISFACTION REFERS TO THE FORMATION OF LAYERED SEDIMENTARY ROCKS, WHERE SEDIMENTS ACCUMULATE IN HORIZONTAL LAYERS OVER TIME, WITH OLDER LAYERS AT THE BOTTOM. I HORIZONTAL LINES IN SEDIMENTARY ROCKS ARE ALSO KNOWN AS " STRATA ( PLURAL), ( ( SINGULAR) " STRATUM.

16. ROCKS THAT HARDENED OVER TIME AND CREATE LAYERS ARE CALLED STRATISFIED ROCKS. EXAMPLES:

17. THE PROCESS OF HOW LAYERS OF STRATISFIED ROCKS ARE FORMED

18. 1. WEATHERING -THE PROCESS THAT BREAKS DOWN ROCKS ON EARTH'S SURFACE INTO SMALLER PARTICLES (LIKE SAND , SILT , AND CLAY) . THIS CAN BE HAPPEN THROUGH PHYSICAL FORCES LIKE TEMPERATURE CHANGES ( CAUSING THE RCKS TO CRACK). CHEMICAL FORCES (EX: WATER REACTING WITH MINERALS.

19. 2. EROSION -IS THE PROCESS WHERE THE ROCKS THAT BREAKS DOWN INTO SMALLER PARTICLES ARE CARRIED AWAY BY FORCES LIKE WATER , GRAVITY ,AND WIND. EXAMPLE: RIVERS MAY CARRY THE PARTICLES TO MOVE THEM DOWNSTREAM.

20. 3.DEPOSITION -AS THE PARTICLES FROM EROSION ARE TRANSPORTED , THEY EVENTUALLY SETTLE DOWN WHEN THE WATER AND WIND SLOWS. NOTE: DEPOSITION HAPPENS IN AREAS LIKE RIVER , LAKES , OR THE OCEAN FLOOR , WHERE PARTICLES CAN NO LONGER BE CARRIED AWAY.

21. 4. SEDIMENTATION -REFERS TO THE PROCESS AFTER LAYERS OF SEDIMENTS BUILDS UP OVER TIME. THESE LAYERS STACK ON TOP OF EACH OTHER WITH THE HEAVIER PARTICLES THAT SETTLED FIRST , FORMING VISIBLE LAYERS.

22. 5. COMPACTION -AS MORE LAYERS ARE DEPOSITED ON TOP OF EACH OTHER ,THE WEIGHT OF THE NEW LAYERS PRESSES DOWN ON THE OLDER ONES .THIS PRESSURE CAUSE THE PARTICLES IN THE LOWER LAYERS TO GET PACKED CLOSER TOGETHER, SQUEEZING OUT THE AIR AND WATER TRAPPED BETWEEN THEM.

23. 6. CEMENTATION -AFTER, COMPACTION, DISSOLVED MINERALS IN THE REMAINING WATER (LIKE SILICA, CALCIUM CARBONATE, OR IRON) START TO CRYSTALLIZE BETWEE N THE SEDIMENT S OR PARTICLES . THESE MINERALS ACT AS A GLUE , BINDING THE PARTICLES TOGETHER TO FORM A SOLID ROCK.

24. RECAP: 1. IT IS THE PROCESS WHERE BROKEN ROCKS ARE TRANSPORTED TO ANOTHER LOCATION. 2. What forces are responsible for transporting broken rocks to different locations? 3. Horizontal lines in sedimentary rocks are also known as? 4. What do you call to the formation of layered sedimentary rocks, where sediments accumulate in horizontal layers over time, with older layers at the bottom? 5. The process where new layers presses down the older layers to get packed closer to each other.

25. CONCLUSION STRATIFIED ROCKS FORM THROUGH WEATHERING, EROSION, DEPOSITION, SEDIMENTATION, COMPACTION, AND CEMENTATION, WHERE LAYERS OF SEDIMENTS ARE COMPRESSED AND BONDED TOGETHER OVER TIME TO CREATE SOLID ROCK. THESE LAYERS ACCUMULATE IN ENVIRONMENTS LIKE RIVERS, LAKES, AND OCEANS, BUILDING UP OVER LONG PERIODS. AS MORE LAYERS FORM, THE PRESSURE INCREASES, AIDING THE COMPACTION PROCESS. ULTIMATELY, THE MINERALS BETWEEN PARTICLES SOLIDIFY THE SEDIMENTS INTO ROCK THROUGH CEMENTATION.

26. THANK YOU FOR LISTENING!