Particle Size and Stream Velocity

The video tutorial explains the diagram on page 6 of the Earth Science Reference Table, focusing on the relationship between transported particle size and water velocity. It covers the axes, particle size categories, and the logarithmic scale used in the diagram. The tutorial also includes practice problems to help understand sediment deposition as stream velocity changes.

What is the main focus of the diagram discussed in the video?

• The chemical composition of river water

• The relationship between particle size and water velocity

• The biodiversity in river ecosystems

• The temperature changes in a river

What is represented on the x-axis of the diagram?

• Particle diameter in centimeters

• Stream velocity in centimeters per second

• Water temperature in degrees Celsius

• Sediment color

Which particle size is the smallest according to the diagram?

• Clay

• Boulders

• Cobbles

• Sand

What does the black line on the diagram indicate?

• The biodiversity of aquatic life

• The chemical composition of sediments

• The temperature gradient in the river

• The relationship between particle size and stream velocity

What type of scale is used on the diagram's axes?

• Linear scale

• Circular scale

• Logarithmic scale

• Exponential scale

What is the significance of the logarithmic scale in the diagram?

• It simplifies the diagram

• It allows for a wider range of values to be displayed

• It shows a linear relationship between variables

• It highlights the smallest particles

What happens to transported particle size as stream velocity increases?

• It remains constant

• It becomes unpredictable

• It decreases

• It increases

In what order are sediments deposited as a river slows down?

• Clay, silt, sand

• Sand, pebbles, boulders

• Pebbles, sand, silt

• Boulders, cobbles, pebbles

Which sediments are still being transported at 0.1 cm/s?

• Boulders and cobbles

• Sand and pebbles

• Silt and clay

• Cobbles and sand

What is the stream velocity for a 10 cm diameter particle?

• 400 cm/s

• 300 cm/s

• 100 cm/s

• 200 cm/s