In this activity, learners estimate how much water they think can be found in various locations on the Earth in all its states (solid, liquid, and gas) to discover the different water ratios in the Earth's total water supply. Learners divide 1000 ml of water (representing the total amount of water on Earth) amongst eight beakers as they predict the various ratios. Then learners measure the amounts of water that reflect the actual ratios and compare their predictions to reality. Learners will be surprised to find out that most of Earth's water is found in the ocean. This resource also includes information about flash floods and flood safety.


  • Mathematics > General
  • Education > General

Education Levels:

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Informal Education,atmosphere,Data Analysis,Oceanography,NSDL,Data Representation,water supply,rivers,Units of Measurement,Conducting Investigations,NSDL_SetSpec_ncs-NSDL-COLLECTION-000-003-112-056,Mathematics,General,flash flood,Volume and Density,Materials science,Data Collection,ratio,Upper Elementary,Physics,flood,Atmospheric science,Changes of Phase,Liquids,glaciers,Ecology, Forestry and Agriculture,General science,groundwater,Number and Operations,Middle School,Early Elementary,Data Analysis and Probability,oceans,lakes,volume,oai:nsdl.org:2200/20110926115947740T,Elementary School,Gases,Weather and Climate,States of Matter,Chemistry,precipitation,water,Atmosphere,Solids,Earth system science,Oceans and Water,icecaps,inland seas,Measurement,soil moisture,Physical science,Education,Technology,Geoscience



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