Internet Investigation: How does stream flow change over time?

1. Describe three factors that control how much water is flowing in a river.
Dams, natural levees, and gradience

2. List the factors that produced the different flow conditions.
Temperature and weather.

3. What do the spikes in the graph indicate?
The higher discharge.

4. List the date and amount of discharge for the two highest peaks on the graph.
August 11th: 3 cfs
August 16th: 1 cfs

5. What do the spikes in the graph indicate?
Higher precipitation

6. List the date and amount of precipitation for the two highest peaks on the graph.
August 10th: 35 mm
August 15th: 28 mm

7. Record the amount and dates of the five discharge spikes and amount and dates of the seven precipitation spikes. What do you notice about the timing of the peaks of discharge and rainfall?
Discharge Spikes: August 2nd, 11th, 16th, 28th, and 30th.
Precipitation Spikes: August 1st, 7th, 10th, 13th, 15th, 27th, and 29th.
There is a precipitation spike right before every discharge spike.

8. What do you notice about the timing of the peaks of discharge and temperature variation starting in March? What do you conclude from this relationship? What other data might you need to confirm your hypothesis?
The graphs have similar shapes. This means that the higher the temperature, the more discharge there is.

9. What do you notice about the timing of the peaks of discharge and rainfall? What do you conclude from this relationship?
The peak of rainfall is just before the peak of discharge.

10. What relationship exists between temperature and discharge? What do you conclude from this relationship?
They peak at about the same time. This means that the higher the temperature, the more discharge there is.

11. What do you think is responsible for the regular shape of the discharge peaks? Speculate on the cause of the major discharge peak at the end of March.
Standard temperatures and precipitation.

Internet Investigation: Flood Controls on the Mississippi

1. Describe how each structure or activity illustrated in the images may reduce the impact of floods.
All of the structures have a method of slowing down and diverting flood water.

2. Briefly summarize how floods cause property damage.
Floods cause property damage by the vast volume and impact of the water break things, pick them up carrying it with the water, and knocking things over. This property damage costs a lot of money to repair.

3. Identify the events surrounding the Great Flood of 1927. Use the images and note some of the effects of the flood. Were attempts at flood control effective during this event?
Some of the effects of the flood were a rise in the water level, damaged levees, flooded farmland, and damaged property. Some attempts at flood control were effective during this event, different flood control methods slowed down the water pressure and diverted water, making parts of the flood less devastating.

4. How was the flood control system constructed under the Flood Control Act of 1928 different from earlier attempts at flood control?
It was government run, so it had more resources and funding. It also went all over the entire river, not just a section of it.

5. Examine the images and summarize the results of the 1937 flood of the Mississippi River. Were attempts at flood control effective in taming the 1937 flood?
There was farmland, housing, highway, streets, and other property destroyed or damaged. The attempts at flood control were relatively unsuccessful because the damages were devastating.

6. Describe some of the damage done by the flood of 1993. What contributed to such a disastrous flooding event?
Unusual weather patterns, causing high moisture levels, causing much of the rain to drain directly into the river contributed to the disastrous flooding. Some of the damage included destroyed homes and displaced families, flood-related deaths, damaged property, damaged crops, and damaged farmland.

7. Examine the three satellite images. Describe the major differences in the landscape before, during, and after flooding.
Before: Lots of vegetation, and the water was confined to the rivers.
During:Water spread out everywhere.
After: Very little vegetation, lots of water and soil everywhere.

Science Homework 1/6

Sand was more prone to sliding.

Avg. of trials 1 and 2: 75%

Avg. of trials 5 and 6: 125%