| Vocabulary | Mass | Volume | Density | Buoyancy |
|---|---|---|---|---|
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The amount of matter inside a space(D=M/V)
What is the definition of density?
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50g because D=M/V so 5=M/10. M=10 x 5 so the mass is 50g(5=50/10).
If the density of an object is 5g/mL and the volume of the object is 10mL, what is the mass of the object?
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Meters cubed
What is the unit for the volume of a solid?
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The density of oil is less than that of water so the oil will float on water.
Is the density of oil more or less than the density of water?
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Float(with less of the object submerged) because oil has a less density than water so if an object floats in oil, it will have to float in water.
Oil has a smaller density than water. Therefore, an object that will float in oil will ________ in water.
|
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When an object is floating on top of a liquid or gas.
What is poitive buoyancy?
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A balance
What piece of equipment do you use to measure the mass of an object?
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5mL because D=M/V so 3=15/V. V=15/3 so the volume of the object is 5mL(3=15/5).
If the density of an object is 3g/mL and the mass of the object is 15g, what is the volume of the object?
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30% because the object is 0.3g.mL less dense than water so 30% of the object will sink.
An object has a density of 0.7 g/mL. It is floating in a bathtub. What percent will rest beneath the surface of the water?
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The liquid that the object is in has a force that pushes against the object therefore making it float at the surface of the liquid.
How does an object float?
|
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When an object neither sinks nor floats(stays at the same spot you put it in). For example, if you drop a piece of paper into a liquid and it stays in the middle or under the surface of the liquid, the the paper has neutral buoyancy.
What is neutral buoyancy?
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Weight depends on gravity and mass does not.
How is mass different than weight?
|
length x width x height
What is the formula for the volume of a cube?
|
0.87g/mL because the density of an object is still the same no matter what you do to it.
An object has a density of 0.87 g/mL. It is cut into 6 equal pieces. What is the density of each piece?
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It would have a negative buoyancy because if an object sinks, then the object has a negative buoyancy and if the object floats, then the object has a positive buoyancy.
If an object sinks in a tub of water, does it have a positive or negative buoyancy?...
|
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g/L and g/m cubed
What is the unit of density for a solid and a liquid(basic unit)?
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252g because D=M/V so 7=M/36. M=36 x 7 so the mass is 252g(7=252/36).
If the density of an object is 7g/mL and the volume of the object is 36mL, what is the mass of the object?
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You use water displacement.
How do you find the volume of an irregular shaped solid?
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The density would have to be less than 1g/mL to float and more than 1g/mL to sink.
If an object was in water, what would its density have to be to float? To sink?
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It has a negative buoyancy;the object will sink.
If an object is in water and its density is 1.5g/mL, does it have a positive or negative buoyancy?
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The force of a liquid or gas pushing up against an object(the ability of an object to float in a liquid or gas)
What is the definition of buoyancy?
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The mass of the graduated cylinder filled minus the mass of the graduated cylinder empty is the mass of the water.
How do you find the mass of water in a graduated cylinder?
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500mL because the density of water is 1g/mL and 500g/500mL=1g/mL.
If the mass of some water is 500g, what is the volume of the water?
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4g/mL because the volume is 35mL-30mL which is 5mL and the mass of the object is 20g, so D=20/5 which is 4g/mL.
A rock has a mass of 20 grams. It is placed in a graduated cylinder containing 30 mL of water. The water level went up to 35 mL. What is the rock's density?
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The object will sink because the density of the object is D=12/6 which is 2g/mL and that is greater than the density of water so the object will sink..
An object has a mass of 12g and a volume of 6mL. Will the object float or sink in water?
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