Rainfall Intensity and Cumulative Curves

The video tutorial covers the use of cheat sheets in exams, common struggles students face, particularly with rainfall graphs and cumulative mass curves. It explains the difference between rainfall intensity and depth, and how to calculate these using graphs. The tutorial also guides on creating cumulative mass curves and interpreting them to understand rainfall intensity over time.

How many pieces of paper are allowed for cheat sheets in the exam?

• Two pieces of paper, front only

• One piece of paper, front only

• Four pieces of paper, front only

• Two pieces of paper, front and back

What is a common topic students struggle with in the final exam?

• Rainfall graphs and cumulative mass curves

• Cheat sheet preparation

• Essay writing

• Multiple choice questions

What is the difference between rainfall intensity and depth?

• Both are the same

• Intensity is the rate of rainfall, depth is the total amount

• Intensity is the total amount of rain, depth is the rate

• Intensity is measured in inches, depth in hours

If it rains 1 inch in half an hour, what is the rainfall intensity?

• 0.5 inches per hour

• 2 inches per hour

• 1.5 inches per hour

• 1 inch per hour

How do you calculate the depth of rainfall over a time period?

• Subtract time from intensity

• Add intensity and time

• Divide intensity by time

• Multiply intensity by time

What is the intensity for the first 15 minutes if the graph shows 0.6 inches per hour?

• 0.25 inches per hour

• 1 inch per hour

• 0.6 inches per hour

• 0.15 inches per hour

How do you interpret the slope of a cumulative mass curve?

• Slope does not relate to intensity

• Steeper slope indicates higher intensity

• Flatter slope indicates higher intensity

• Steeper slope indicates lower intensity

What does a cumulative mass curve represent?

• Total rainfall over time

• Rainfall intensity at a specific time

• Average rainfall over a period

• Rainfall depth at a specific time

How do you calculate the accumulated rainfall at 30 minutes if the depth at 15 minutes is 0.15 inches and the next 15 minutes is 0.25 inches?

• 0.15 inches

• 0.25 inches

• 0.4 inches

• 0.5 inches

What does a flatter slope on a cumulative mass curve indicate?

• Constant rainfall intensity

• No change in intensity

• Lower rainfall intensity

• Higher rainfall intensity