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Density Exploration Worksheet
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Density Exploration Worksheet
Use water’s density as 1 g/mL. Show your calculations and include units where appropriate.
Explore density
1.Which statement best describes density?
- The total mass of an object
- The space an object occupies
- The mass in a given volume
- The size an object appears
2.Wiremu predicts which objects will sink when placed in water. Select all that are usually denser than water: a steel key, a pumice stone, a wax crayon, or a cork stopper.
- Steel key
- Pumice stone
- Wax crayon
- Cork stopper
3.A measuring cylinder contains 36 mL of water. After a small solid is fully submerged, the level reads 43 mL. How do you find the solid's volume, and what is that volume?
4.Complete the statement: An object less than water will generally float in water.
Calculate and compare
5.A sample has a mass of 18 g. Its water-displacement readings are 25 mL before and 31 mL after it is submerged. Calculate its volume and density, then predict whether it will float or sink in water.
6.A second sample has a mass of 6.4 g and displaces 8 mL of water. Work out its density and predict whether it floats or sinks. Compare its density with the first sample.
7.A cube has a mass of 21 g and a volume of 30 mL. Calculate its density and decide whether it is likely to float or sink in water. Show your working.
Explain and investigate
8.Nathan notices that a broad piece of timber floats, while a small steel washer sinks. Explain why an object's size alone does not determine whether it floats or sinks.
9.Give two possible sources of error when measuring an object's volume by water displacement.
10.Complete the idea using evidence from the calculations: Density helps predict whether an object floats or sinks because…
11.Draw and label how to find the volume of an irregular solid by water displacement. Include the initial and final water levels and the calculation used to find the solid's volume.
3 printable pages
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