Chapter 34 - Water on our World

Key Terms:

Objectives of chapter:

• Define and describe the hydrologic cycle
• define groundwater and describe how it flows
• Distinguish permeability from porosity
• name three variables affecting stream flow velocity
• locate and explain the North American Continental divide
• compare and contrast rivers and glaciers
• describe accumulation and ablation
• explain how ocean waves form and move
• name several sources of water contamination
• cite ways to conserve water on a daily basis

Outline:

34.1 The Hydrological Cycle

see tutorial on the textbook web site

significance? water cleansing and distribution system

34.2 Water Below the Surface

98.5% of all freshwater on earth is locked up underground

movement of water depends on soil type

porosity vs permeability

the water table

aquifers and springs

34.3 Steams come in different shapes and sizes

stream shape changes as stream moves

what is a water shed?

34.4 Glaciers are flowing ice ( see this website for more about this topic)

Glaciers move like slow streams - due to plasticity of ice.

Accumulation the addition of mass

Ablation- ice lost annually

34.5 Most of the Earth's water is in the oceans

sea floor features

ocean waves and their mechanics

coastal erosion and shoreline features due to wave action

34.6 Can we drink the water?

dissolved substances in the water effect water quality

all water moves towards the ocean and can effect it as well

Chapter links

class text - conceptual physical science

PCDS useful links - sorted by topic

http://www.groundwater.org/GWBasics/hydro.htm- more about groundwater

http://www.epa.gov/kids.water.htm -all about water and water quality

http://www.usgs.gov/education.html

http://www.clemson.edu/waterquality/educate.htm

Related reading

Jason Project story #3 - "how does the land meet the ocean?" page 75

Related labs, activities and videos

labs

• coastal erosion
• understanding toxicity
• plumes and blooms- Jason page 79
• spectroscopes and chlorophyll - jason page 82

activities

• "storm water pollution" - GIS activity
• AZ_BASINS - GIS activity
• geoblox - build a 3-D model of the shoreline features

videos

• PCB's in the food chain
• Effects of water pollution
• We all live downstream
• dirty water, difficult decisions

Practice Book and Homework Exercises

page 88 - jason - investigating coastal ecosystems

page 79 jason -plumes and blooms

find out how storm water is managed in your neighborhood.

- are there storm drains? - retention basins?
-take pictures and / or make a diagram to share with the class

email Mrs Youngman with your suggestions for this page