L2 Science Worksheet1 Week2

 

Water & Health Systems - L2 Science-Geography Worksheets

Week 2: Water Detective Challenge LU Value: 20 points per worksheet

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L2 MAIN WORKSHEET: Water Mystery Solutions

Name: _________________ Date: _________________ LU Target: 20 points

Part A: Science Investigation (8 points)

1. Lab Results Understanding (3 points) AGVS lab tested Khapa village water:

Water Source	Nitrate Level	Safe or Unsafe?
Bore Well	150 mg/L	?
Hand Pump	120 mg/L	?
Bottled Water	15 mg/L	?
Safe limit	50 mg/L	✓

a) Mark each source as Safe or Unsafe (2 points) b) Which source should athletes use? Why? (1 point)

2. Contamination Explanation (2 points) Draw a simple picture showing how drain water gets into wells during heavy rain. Label: drains, rain, wells, dirty water flow.

3. Water Calculations (3 points) Calculate daily water needs:

• Rohit: 30 kg weight, plays 2 hours daily = _____ liters

• When sick, needs 40% extra = _____ liters total

• Calculate the same for Your Weight and 3 hrs of play daily

Formula: (Weight × 35 ml) + (Hours × 500 ml) + extra if sick

Part B: Geography Patterns (6 points)

4. Monsoon Problems (3 points) Look at this rainfall pattern:

• Normal July: 250 mm rain

• 2025 July: 380 mm rain

a) How much extra rain fell? _____ mm b) Why did this cause problems in many villages? (2 points)

5. Village Mapping (3 points) On the map, mark:

• Where Khapa and Khubala villages are located

• Show how the same weather affected both places

• Draw arrows showing water flow during heavy rain

Part C: Problem Solving (6 points)

6. Water Safety Plan (3 points) Make a safety plan for village athletes:

• How long to boil contaminated water? _____

• How many purification tablets for 2 liters? _____

• When should athletes switch to bottled water?

7. Warning System (3 points) Design a simple warning system:

• What weather signs mean "test water"?

• How to tell athletes water might be unsafe?

• Make a simple chart with colors: Green = Safe, Yellow = Test First, Red = Don't Drink