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🔬 Science - Class 10
Unit 8 · Floatation

Floatation Presentation

ScienceSubject
8 minEstimated read
Slide 1 of 4
Science and Technology, Grade 10

Floatation

Why things sink or float · The law of floatation · From ships to balloons

By the end you can

⚖️

Name the two forces on a floating object

📜

State and use the law of floatation

🚢

Explain why an iron ship floats

🎈

Apply it to submarines, fish, hydrometers and balloons

Same foil, different shape

⚪Ball
Displaces little water
Upthrust < weight
Sinks
VS
📄Flat sheet
Displaces more water
Upthrust = weight
Floats

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Presenter notes: Today we find out why a coin sinks but an iron ship floats. Start by asking the class: what have you seen sink in water, and what have you seen float?