4. Which of the following types of currents can transport sand grains? a. rivers 5. In which of the following sedimentary environments would you expect the sand deposits B. wind C. ocean waves D. all...

Extracted text: 4. Which of the following types of currents can transport sand grains? a. rivers 5. In which of the following sedimentary environments would you expect the sand deposits B. wind C. ocean waves D. all of these to be poorly sorted? A. alluvial C. desert D. glacial B. beach Learning Activities Activity: Sedimentary Layering Model Directions: 1. Cut off the top of the clear transparent plastic bottle to form a cylinder. 2. Mix together sand ("80%) and rounded pebbles (~20%). Pour the mixture into the plastic cylinder to form the first layer. Press to flatten the surface. 3. Pour flatten the surface. pure sand into the plastic cylinder to form the second layer. Press to compact and 4. Form a thin third layer using modeling clay. 5. On a small plastic bag, mix together sand, soil, angular pebbles, and small wood fragments. Pour the mixture into the clear plastic bottle to form the fourth layer. Press down on sediment mixture to form a flat surface. 6. Mix together sand and small shells. Pour the mixture into the plastic cylinder to form the fifth layer. 7. In a separate container, mix together sand and soil in equal proportions. Pour water into the mixture. Cover the cylinder with a lid and shake the mixture thoroughly. Pour the mixture slowly so as not to disturb the lower layers already in the cylinder. Allow the sediments to settle to form the sixth and final layer. 8. Have the learners make a representative drawing for each of the sediment layer. Drawings should graphically show the grain sizes, grain size distribution, and 'fossil content (e.g. shells, wood fragments) 9. Measure the thickness of each layer. Have them provide a short description for each layer in terms of color, grain size and components. 33 Description Small u-rounded pebbies witha fewsandgan Origin composed of weil soned sand sied sedments Subanguar pees * Wel soedand ed sedments with fassits Guide Questions: 1. Which layer is the youngest layer? 2. Which layer is the oldest? 3. Can you make a story of what happened to this rock formation? Self -Evaluation Superposition is a fundamental principle in stratigraphy (the study of stratified/layered rocks). It states that, in an undisturbed (not faulted or folded), the bottom layer was formed before the top layer. However, rocks may be subjected to deformation (folding and