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1000 Figure 1 (below) represents the Hjulström diagram, which describes the relationships between particle size and their tendency to be eroded, transported, or deposited at different water flow velocities. a) If a sand particle of 0.1 mm was settled at the bottom of a stream, what flow velocity would be needed for the particle to become suspended? Flow ve v velocity (cm/s) 0.1 100 10 mmigravel .01 mim silt Particles eroded Erosion velocity 10- Particles transported curve Settling velocity curve. 1 mm/sand Particles deposited .001 .01 0.1 1.0 clay silt sand 10 gravel 100 pebbles, cobbles, boulders 1000 mm Particle size (mm) and type Figure 1: The Hjulström diagram Using the information in Figure 1, answer the following questions: b) If the velocity were to start dropping, at what velocity would a suspended sand particle of 1 mm settle back to the bottom of the stream? c) What is the largest particle that can remain in suspension at a 1 cm/s flow velocity? d) At 100 cm/s velocity, what particle sizes will be in suspension in the water?

1000 Figure 1 (below) represents the Hjulström diagram, which describes the relationships between particle size and their tendency to be eroded, transported, or deposited at different water flow velocities. a) If a sand particle of 0.1 mm was settled at the bottom of a stream, what flow velocity would be needed for the particle to become suspended? Flow ve v velocity (cm/s) 0.1 100 10 mmigravel .01 mim silt Particles eroded Erosion velocity 10- Particles transported curve Settling velocity curve. 1 mm/sand Particles deposited .001 .01 0.1 1.0 clay silt sand 10 gravel 100 pebbles, cobbles, boulders 1000 mm Particle size (mm) and type Figure 1: The Hjulström diagram Using the information in Figure 1, answer the following questions: b) If the velocity were to start dropping, at what velocity would a suspended sand particle of 1 mm settle back to the bottom of the stream? c) What is the largest particle that can remain in suspension at a 1 cm/s flow velocity? d) At 100 cm/s velocity, what particle sizes will be in suspension in the water?

Applications and Investigations in Earth Science (9th Edition)
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
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1000 Figure 1 (below) represents the Hjulström diagram, which describes the relationships between particle size and their tendency to be eroded, transported, or deposited at different water flow velocities. a) If a sand particle of 0.1 mm was settled at the bottom of a stream, what flow velocity would be needed for the particle to become suspended? Flow ve v velocity (cm/s) 0.1 100 10 mmigravel .01 mim silt Particles eroded Erosion velocity 10- Particles transported curve Settling velocity curve. 1 mm/sand Particles deposited .001 .01 0.1 1.0 clay silt sand 10 gravel 100 pebbles, cobbles, boulders 1000 mm Particle size (mm) and type Figure 1: The Hjulström diagram Using the information in Figure 1, answer the following questions: b) If the velocity were to start dropping, at what velocity would a suspended sand particle of 1 mm settle back to the bottom of the stream? c) What is the largest particle that can remain in suspension at a 1 cm/s flow velocity? d) At 100 cm/s velocity, what particle sizes will be in suspension in the water?
Transcribed Image Text:1000 Figure 1 (below) represents the Hjulström diagram, which describes the relationships between particle size and their tendency to be eroded, transported, or deposited at different water flow velocities. a) If a sand particle of 0.1 mm was settled at the bottom of a stream, what flow velocity would be needed for the particle to become suspended? Flow ve v velocity (cm/s) 0.1 100 10 mmigravel .01 mim silt Particles eroded Erosion velocity 10- Particles transported curve Settling velocity curve. 1 mm/sand Particles deposited .001 .01 0.1 1.0 clay silt sand 10 gravel 100 pebbles, cobbles, boulders 1000 mm Particle size (mm) and type Figure 1: The Hjulström diagram Using the information in Figure 1, answer the following questions: b) If the velocity were to start dropping, at what velocity would a suspended sand particle of 1 mm settle back to the bottom of the stream? c) What is the largest particle that can remain in suspension at a 1 cm/s flow velocity? d) At 100 cm/s velocity, what particle sizes will be in suspension in the water?
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