Question

1. Why do some objects float on the water? And

some sink? (AS)
2. Explain density and relative density and write their formulae. (AS)
3. Explain buoyancy in your own words. (AS,)
4. How can you find the relative density of a liquid? (AS)
5. Draw the diagram of a mercury barometer. (AS)​

Answer 1

Answer:

Objects with tightly packed molecules are more dense than those where the molecules are spread out. Density plays a part in why some things float and some sink. Objects that are more dense than water sink and those less dense float. ... When an object floats, it pushes water out of the way ( displacement ).