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Name: ________________________________ Period: ___________ Date: ___________

9-5 Particle Size/Stream Velocity

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1. How fast does a stream have to move to carry a 1 cm particle? _____________________

2. How fast does a stream have to move to carry the smallest cobbles? _________________

3.Classify the following size particles:

a. a. 0.07 cm_________________ d. 4.2 cm ________________

b.

b. 0.005 cm _______________ e. 0.0002 cm _______________

c. 20.5 cm________________ f. 39.5 cm _______________

4. Use the ruler on the reference tables to classify the following particles:

a. → o b. → o c. → O

5. How fast does a stream have to travel to carry particle C in question 4? __________________

6. Determine what particles will be carried by stream moving at the following velocities:

a. 50 cm/sec________________________________________

b. 100 cm/sec_______________________________________

c. 200 cm/sec_______________________________________

d. 250 cm/sec_______________________________________

e. 300 cm/sec_______________________________________

Why does the curve flatten at the top of the graph? _____________________________________________

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