Low pressure weather system means warmer air tends to rise,
High pressure systems indicate a colder more dense air mass that will…….
Density Large ball – 0.53 g/cm 3 Medium ball – 1.05 g/cm 3 Small ball – 0.82 g/cm 3
The “bounceability” of a ball depends on its density, not on its mass or on how big the ball is.
Have you wondered why hot air balloons rise? When the air is heated, it becomes less dense until the balloon's total density is less than that of the atmosphere; A hot air balloon is literally floating on the denser, colder air.
Do you know why volcanoes erupt? The main reason that magma rises to the surface to erupt at volcanoes is because it is less dense than the rocks that surround it.
A ship floating on water is a great illustration of the difference between mass and density. A ship must have a density of less than 1.0 g/cm 3 (the density of water), or it will sink. Ships have a large mass, because they are made of steel, but because they have a large volume, their density is less than 1.0 g/cm 3 . If enough mass is added to them such that their density goes above 1.0 g/cm 3 , they will sink.
You have a rock with a volume of 15cm 3 and a mass of 45 g. What is its density? D = m/v (g/cm 3 )
What is the mass of a 350 cm 3 sample of pure silicon with a density of 2.336 g/cm 3 ? Mass = density x volume x Mass = 2.336 g/cm 3 x 350 cm 3 Mass = 818 grams D = m/v (g/cm 3 ) m=d x v v=m/d http://serc.carleton.edu/mathyouneed/densitysp.html
Solving For Mass Original Formula Multiply both sides by v The "v's" cancel out Isolate for mass m = v x D
solving For Volume Original Formula Multiply both sides by volume m = v x D Divide both sides by density Adjusted formula
Look at the graduated cylinder. It contains the following liquids. Label the liquids in the graduated cylinder based on the data below. (4 A . B . C D . Liquid Density (g/ml) corn syrup 1.38 ether 1.2 canola oil .93 salt water 1.1
Put the following steps IN ORDER to demonstrate your understanding of how to find the density of an irregular object.
1. _____a. Mass the object on a balance.
2. ____ b. Place object in graduated cylinder
3. _____c. Using the formula for density, calculate the density of
4. _____d. Subtract initial volume from the volume of the object +
5. _____e. Fill graduated cylinder with water above the size of the
6. _____f. Include final units for mass and volume in final answer
7. _____g. Record initial volume in milliliters
8. _____h. Record mass in grams
9. _____i. Record volume of object only in milliliters
10. _____j. Record volume of object + water in milliliters