Using p. 34 in your book what is the density of Mercury?
13.5g/cm3
100
If you push a beach ball under water and then let go, will it rise, sink or stay where it is?
Rise
100
When an object is placed in water what will the water level do? Rise, Drop or Stay the same?
Rise
100
Solve for Density:
M=21g
V=6.2cm3
D = 3.387g/cm3
100
To determine the volume of an object, you need to know what 2 other items?
Volume and Mass
200
Using p. 34 in your book, name 3 substances that have a density less than 1.0.
Air, Alcohol and Cork
200
True or False:
Buoyancy is the downward force on an object in a liquid.
False
200
The amount of water that is pushed aside by an object is called what?
Displacement
200
Solve for Mass:
D= 12g/cm3
V=2cm3
M=24g
200
Volume is usually measured in what units?
cm3
300
True or False:
Density if a physical property of matter.
True
300
True or False?
It is easier to lift your leg while standing in water than it is on land.
True
300
What type of shape is a rock? Irregular or Regular
Irregular
300
Solve for Volume:
D=64.3g/cm3
M=3.2g
V=20.09cm3
300
Mass is usually measured in what units?
grams
400
Density is usually measured in what type of units?
grams per centimeters cubed
400
When measuring buoyancy, what unit do you use?
Newton
400
If you place a rock in 50mL of water and the water level rises to 55mL after the rock is completely under water, what is the volume of the rock?
5 mL
400
Solve for Density:
Mass: 24.3g
Volume: 3.1cm3
D= 7.8 g/cm3
400
Write the formula you would use to find density.
Density = M/V
500
If someone were trying to sell you a "REAL" silver necklace but you did not trust them, what could you do to determine if the silver was 'real' or not. Why?
Determine the density. Because the density of a substance always stays the same.
500
Describe why a submarine which is made of steel is able to float in water?
Submarines have ballast tanks are full of air, the average density of the whole ship is less than the density of water.
500
Describe how you would determine the volume of an irregularly shaped object.
Describe displacement
500
Solve for Mass:
V=31cm3
D=13g/cm3
M = 403g
500
Write the formula that you would use to determine the Mass of an object.