PURPOSE:
-
TO REVIEW THE DEFINITION OF THE TERM "CYCLE."
-
TO REVIEW THE "WATER CYCLE."
GOAL: UPON COMPLETION OF THIS INVESTIGATION:
-
(1) THE STUDENT WILL BE ABLE TO DEFINE THE TERM "CYCLE" BOTH ORALLY AND IN WRITING.
-
(2) THE STUDENT WILL BE ABLE TO DIAGRAM THE WATER CYCLE AND EXPLAIN WHAT IS HAPPENING AT EACH STEP IN THE CYCLE.
MATERIALS: FLASK - COLORED WATER SOLUTION - HEAT SOURCE - DISTILLATION SET-UP(DEPENDS ON LAB FACILITIES)
PROCEDURE:
-
1. SET-UP DISTILLATION APPARATUS.
-
2. ASK THE STUDENTS WHAT THEY THINK WILL HAPPEN WHEN THE SOLUTION IS HEATED.
-
3. PERFORM THE INVESTIGATION.
OBSERVATIONS:
-
1. THE DISTILLED WATER IS CLEAR.
EVALUATION:
-
1. THE STUDENT CAN EXPLAIN THE INVESTIGATION BY DIFFERENCES IN BOILING POINTS.
-
2. THE STUDENT CAN RELATE THIS ACTIVITY TO THE WATER CYCLE ON EARTH.
-
SUGGESTED VIDEO SERIES
THE EARTH AT RISK ENVIRONMENTAL VIDEO SERIES
I recommend these videos as a means to introduce and expand population/environmental topics. Each program is 30 minutes in length and show actual environmental projects.
ACID RAIN
CLEAN AIR
CLEAN WATER
DEGRADATION OF LAND
EXTINCTION
GLOBAL WARMING
NUCLEAR ENERGY
RECYCLING
THE RAINFOREST