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Water Phases Worksheet
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Water Phases Worksheet|Grade 9|P-1
🧊 Part 1: Multiple Choice - Water Phases
1. What are the three phases of water?
Ice, liquid water, and steamSolid, gas, and plasmaFrozen, wet, and hotCold, warm, and boiling
2. At what temperature does water freeze at sea level?
-10°C0°C32°C100°C
3. What is the process called when liquid water becomes steam?
FreezingMeltingEvaporationCondensation
4. At what temperature does water boil at sea level?
0°C50°C100°C150°C
5. Which phase of water has molecules that are most tightly packed?
Ice (solid)Liquid waterSteam (gas)All are the same
6. Which of these are examples of water in its solid phase? (Select all that apply)
Ice cubesSnowHailRain
💧 Part 2: Fill in the Blanks & Short Answers
7. Complete the sentence:
The three phases of water are __________, __________, and __________.
8. When ice melts, it becomes __________.
9. When water vapour cools down, it __________ back into liquid water.
10. Explain what happens to water molecules when water changes from liquid to gas:
11. Give three real-world examples of water in its gas phase (steam/water vapour):
12. Describe one way you observe water changing phases in your daily life:
🔬 Part 3: Application & Analysis
13. True or False: Water can exist in all three phases at the same time.
TrueFalse
14. If you heat ice at -5°C, what will happen first?
It will become steam immediatelyIt will melt into liquid waterNothing will happenIt will get colder
15. Draw and label a simple diagram showing the three phases of water:
16. Explain why understanding water phases is important in weather patterns:
17. What role does temperature play in determining the phase of water?
18. Compare the movement of molecules in ice versus steam:
19. Predict what would happen to a glass of water left outside on a very hot day (35°C):
20. Extension Challenge: Research and explain what happens to water at very high altitudes where air pressure is lower:
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