Academy Curricular Exchange
Columbia Education Center 


AUTHOR:  Cindy Miller, Precott High School, Prescott, AZ

GRADE LEVEL/SUBJECT:  K to 4, Science, Arithmetic, Language,
Health; Analysis, Comparing, Similarities and Differences,
Drawings, Evaluation, Experimenting, Observation

OVERVIEW:  This activity will introduce new vocabulary and will
serve as a building block to future lessons on the water cycle.
Students will use experiences from their everyday lives to practice
the above skills.

PURPOSE:  This activity is designed to help students understand
that water picks up natural and man-made substances as it moves
over and through the earth. Students will observe and experiment
with water in three physical forms.

OBJECTIVES:  Participants will be able to: 
  1) observe water in different physical forms  
  2) theorize what happens in the evaporation process, and
  3) observe residues left after water evaporates.

RESOURCES/MATERIALS:  Refrigerator, small plastic glasses or a jar,
water source, rulers, balance scale, tea kettle, hot plate and mirror.

  1. Show the student an ice cube, or provide each student with an
ice cube in a cup.  
  2. Ask the students what the cube is made of and ask them to put
them in the glass and observe what happens.  
  3. When the ice has melted, discuss the difference between the
solid form of water and the liquid form.  
  4. Have the students leave their glasses of water on a shelf and
ask then what they think might happen.  
  5. When the water has evaporated, discuss with them what has
happened and compare this to their answers to what they thought
would happen in step 4.  
  6. Observe the sides and bottom of the glasses and, if necessary,
compare them to a new glass.  
  7.  Discuss with them where the film came from that is left on the
sides and bottom of the glass.  
  8. Heat water in the tea kettle and, when boiling, hold the mirror
over the opening in the spout and observe what happens.  
  9. Discuss with them how water becomes steam and is able to move into the air.

TYING IT ALL TOGETHER:  Have the students draw the things that they
observed.  Have student describe the three physical forms of water
and compare and contrast them.  Test students knowledge of the
following vocabulary words: Solid, Liquid, Gas, Vapor, Absorb, Evaporation.

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