InTeGrate Modules and Courses >Water Science and Society > Student Materials > Water Distribution on Earth > Hydrologic Cycle > Formative Assessment 1: The Water Cycle
InTeGrate's Earth-focused Modules and Courses for the Undergraduate Classroom
Learn More
These materials are part of a collection of classroom-tested modules and courses developed by InTeGrate. The materials engage students in understanding the earth system as it intertwines with key societal issues. The collection is freely available and ready to be adapted by undergraduate educators across a range of courses including: general education or majors courses in Earth-focused disciplines such as geoscience or environmental science, social science, engineering, and other sciences, as well as courses for interdisciplinary programs.
Explore the Collection »
Download
The student materials are available for offline viewing below. Downloadable versions of the instructor materials are available from this location on the instructor materials pages. Learn more about using the different versions of InTeGrate materials »

Download a PDF of all web pages for the student materials

Download a zip file that includes all the web pages and downloadable files from the student materials

### For the Instructor

These student materials complement the Water Science and Society Instructor Materials. If you would like your students to have access to the student materials, we suggest you either point them at the Student Version which omits the framing pages with information designed for faculty (and this box). Or you can download these pages in several formats that you can include in your course website or local Learning Managment System. Learn more about using, modifying, and sharing InTeGrate teaching materials.

# Formative Assessment 1: The Water Cycle

### Instructions

Answer each question in 2-3 complete sentences. Consider each question carefully and be sure to provide a complete answer.

### Questions

1. What are the outputs and inputs of water from the oceans, as shown in the figure above? Do the same for the continents.
2. Do the fluxes to and from the oceans balance? What about the continents?
3. Take the total precipitation that falls on the continents from the numbers in the figure above. Calculate the annual average precipitation you would expect, in meters per year, if the precipitation fell evenly over the continents, assuming a total land area of 148 million km2 for the Earth. (Note: be careful with your units here! The values in the figure are reported in 103 km3.)
4. How does your precipitation value compare to the mean annual precipitation in Sacramento, CA. How about to State College, PA?
5. Do you think the average annual precipitation you calculated above would be enough to allow dry land farming (i.e. without irrigation) or to support major population centers? Explain your reasoning.

### Worksheet

Download the worksheet (Microsoft Word 2007 (.docx) 317kB Mar28 17)to use when submitting your assessment.

### Submitting your Answers

Bring your written answers to class. If they are hand-written, be sure your writing is legible. If your handwriting is not clear, please type and print your answers.

### Scoring and Rubric

Each answer will earn a maximum of 5 points for a total of 25 points, as described in the rubric below.

Rubric
Work ShownPoints Possible
Answer reflects careful consideration of the question2
Answer is appropriate in length1
Answer is legible1
Answer given in complete sentences, correct spelling and grammar1

These materials are part of a collection of classroom-tested modules and courses developed by InTeGrate. The materials engage students in understanding the earth system as it intertwines with key societal issues. The collection is freely available and ready to be adapted by undergraduate educators across a range of courses including: general education or majors courses in Earth-focused disciplines such as geoscience or environmental science, social science, engineering, and other sciences, as well as courses for interdisciplinary programs.