Have you ever jumped into a pond, well, or pool and felt lighter in the water than outside? Or tried pushing down a floating object like a tennis ball, only to feel it push back up and rise to the surface when you let go? In this learning unit, you’ll explore this upward force—called buoyancy—and discover why some objects float while others sink.
Description
Materials Required
For Task 1: Bucket (with water), empty plastic bottle or a container
For Task 2: (i) Stones (roughly the size of half the palm), (ii) Any objects that float, (iii) Spring balance (for measuring weight), (iv) Glass beaker with water, (v) Salt (for saltwater).
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