Introduction to Density - PowerPoint Presentation

Slide1

Introduction to Density

http://www.youtube.com/watch?v=cvLlCEHtSOs

What

is

Density

?

How do we

find

density

?

Notes

on

Density

:

http://exchange.smarttech.com/search.html?q=Love+that+Density&subject=All+subjects&grade=All+grades&region=

en_USSlide2

Finding Density

Density= Mass/Volume

Step one—Find the Mass of the object by weighing it.

Step 2—Find the volume by taking Length X Width X Height (For the most part, length is how long something is, Width is how wide something is and Height is how tall something is—but don’t get hung up on the definitions—just measure, write down the measurements, and multiple them to get your answer)Slide3

Let’s practice

First you can only do this on cube or rectangular prism—something that has a length, width & height. (If you want to find the volume of a solid that has an irregular shape—you have to do something else.)

Let’s measure a snicker candy cube, a 3 musketeer cube and a milky way cube. Be sure to write down and label the measurements and multiply them together to find volume.Slide4

Which would have more density, a snickers, 3

muskateer’s

bar, or a milky way bar?

Hypothesis: If I compare all three snack candies, then ________________________ will have the most density, because _______________________________. Slide5

Candy

Weight

Length

Width

Height

LxWxH

=

Voulume

Density=Mass/VolumeSlide6

Formula for Density

Now Let’s find the density by dividing the mass by the volume;

D=m/v

Which number goes inside the division sign or is entered in the

calcularot

first?

Which number is on the outside or goes into the calculator last?

Be sure to calculate for each candy bar.

What did you find out.Slide7

Summing it All Up

Go back to your question and your hypothesis and your findings:

1.. What was your question?

2. What was your hypothesis (what did you think would happen?)

3. What were your results.

Write about all this and also, write about what you learned and would like to learn more about—What questions do you

still have?