Mass,+Volume,+Density


 * [|"Density"class activity]

"Density" Class activity:

__**Weight:**__ The mass PLUS the pull of gravity. Use a spring scale to measure weight. The volume of irregular shaped objects is measured by __**v****olume displacement**__ in a graduated cylinder using mL __**Density:**__ Density is determined by the amount of matter in a given volume. __**D=M/V:**__ Density equals Mass divided by Volume [|Density examples] Density "In-Class" Lesson Click on this link for a density lesson that will be completed in-class. __**Moon vs. Earth:**__ The pull of gravity on the moon is 1/6 of the pull of gravity on the Earth! If you travel from Earth to the moon, you would weigh one-sixth of what you weigh on earth! WOW! Of course, your mass wouldn't change. __**Layers of Liquids:**__ Remember the activity that we did in class where the different liquids were layered in the graduated cylinder? What did that tell you about density? If all of the liquids had the same density, they would not have layered! The liquids with the highest density were at the bottom of the graduated cylinder. __**Floating Egg:**__ The egg floated in the salt water and sunk in the plain water. The egg is more dense than plain water, but less dense than salt water. __**Bottle of Salt Water and Fresh Water.**__ The bottle with the salt water sunk to the bottom of the tank and the bottle with the fresh water floated! Why? __**Coke vs. Diet Coke.**__ The Coke sank to the bottom of the tank and the Diet Coke floated in the water. Why?
 * __Mass:__** the amount of "stuff" (matter) in an object. Measured in grams (g) on a balance scale.
 * __Volume:__** the amount of space an object occupies. Straight edge rectangular prisms are measured with a ruler (LxWxH) in cm3.

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