Year 3 Density

Oil will _________ on the surface of the water as oil is _______dense than the water.

• sink, less

• sink, more

• float, less

• float, more

An object sinks or floats in the water is related to its size.

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Objects with a density greater than water will sink into the water. True or false?

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Determine which of the following objects is most likely to float on the water?

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How to make a small tomato sinking in the water float? [Select multiple]

• Add salt to the water.

• Add cooking oil to the water.

• Add sugar to the water.

• Add vinegar to the water

Which statement is correct ？

• An object sinks or floats in the water is related to the density of the object.

• Light is floating, and heavy is sinking.

• Objects with a density less than water will sink in water.

• The density of sea water is lower than the fresh water.

Which of the following objects can't float on the water?

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Which statements are wrong ?

[choose multiple]

• Salt can increase the density of water and float objects that would otherwise sink to the bottom.

• The floating ball of the fishing net will float on the surface and the sinker will sink to the bottom.

• Icebergs cannot float on the surface of the sea.

• The sponge can always float on the water.

Which object in the following options will sink to the bottom when placed in water?

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What is density ?