Density Are you dense?? (How dense R U?). What is density? Density is a comparison of how much...

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Density Are you dense?? (How dense R U?)

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Transcript of Density Are you dense?? (How dense R U?). What is density? Density is a comparison of how much...

Page 1: Density Are you dense?? (How dense R U?). What is density? Density is a comparison of how much matter (mass) there is in a certain amount of space (volume).

Density

Are you dense??

(How dense R U?)

Page 2: Density Are you dense?? (How dense R U?). What is density? Density is a comparison of how much matter (mass) there is in a certain amount of space (volume).

What is density?

Density is a comparison of how much matter (mass) there is in a certain amount of space (volume).

Page 3: Density Are you dense?? (How dense R U?). What is density? Density is a comparison of how much matter (mass) there is in a certain amount of space (volume).

Mass, Volume & Density

Mass- Amount of matter an object contains

 

Volume- Amount of space an object occupies

 

Density- A measure of how much matter is packed into a given

volume

 

Page 4: Density Are you dense?? (How dense R U?). What is density? Density is a comparison of how much matter (mass) there is in a certain amount of space (volume).

Remember………….

Density = Mass/Volume

Density of Water = 1 g/mL (or cc) cubic cm.

If density is greater than water ------- Sink

If density is less than water ---------- Float

 

Page 5: Density Are you dense?? (How dense R U?). What is density? Density is a comparison of how much matter (mass) there is in a certain amount of space (volume).

Which one is more dense?

Demonstration: Kids in a square

How about this: Which square is more dense?

Page 6: Density Are you dense?? (How dense R U?). What is density? Density is a comparison of how much matter (mass) there is in a certain amount of space (volume).

Which one is more dense?

Now which one is more dense?

Page 7: Density Are you dense?? (How dense R U?). What is density? Density is a comparison of how much matter (mass) there is in a certain amount of space (volume).

What is density?

Density = mass OR mass ÷ volume.

volume

Units for density: g .

cm3

Why are these the units for density?

ALWAYS REMEMBER

UNITS!

Page 8: Density Are you dense?? (How dense R U?). What is density? Density is a comparison of how much matter (mass) there is in a certain amount of space (volume).

Let’s try a density problem togetherFrank has a paper clip. It has a mass of

9g and a volume of 3cm3. What is its density?

9g/ 3cm3 = 3 g/cm3

Frank also has an eraser. It has a mass of 3g, and a volume of 1cm3. What is its density?

3g/ 1cm3 = 3 g/cm3

Page 9: Density Are you dense?? (How dense R U?). What is density? Density is a comparison of how much matter (mass) there is in a certain amount of space (volume).

Work on these problems with your neighbor.

Jack has a rock. The rock has a mass of 6g and a volume of 3cm3. What is the density of the rock?

Jill has a gel pen. The gel pen has a mass of 8g and a volume of 2cm3. What is the density of the rock?

Page 10: Density Are you dense?? (How dense R U?). What is density? Density is a comparison of how much matter (mass) there is in a certain amount of space (volume).

Now, try these on your own.

Al’Licia has a watch. It has a mass of 4g and a volume of 2cm3. What is the density of the watch?

Mia has a wallet. It has a mass of 15g and a volume of 5cm3. What is the density of the wallet?

Page 11: Density Are you dense?? (How dense R U?). What is density? Density is a comparison of how much matter (mass) there is in a certain amount of space (volume).

What did we learn about density

Density is how much matter (stuff) there is in a certain amount of space.

Density =

Units for density:

Are you denser than water???

mass volume

mass ÷ volumeor

g/cm3

Page 12: Density Are you dense?? (How dense R U?). What is density? Density is a comparison of how much matter (mass) there is in a certain amount of space (volume).

Liquid Layers

If you pour together liquids that don’t mix and have different densities, they will form liquid layers.

The liquid with the highest density will be on the bottom.

The liquid with the lowest density will be on the top.

Page 13: Density Are you dense?? (How dense R U?). What is density? Density is a comparison of how much matter (mass) there is in a certain amount of space (volume).

Liquid Layers

Check out this picture from your book. Which layer has the highest density?

Which layer has the lowest density?

Imagine that the liquids have the following densities: 10g/cm3. 3g/cm3.6g/cm3. 5g/cm3.

Which number would go with which layer?

Page 14: Density Are you dense?? (How dense R U?). What is density? Density is a comparison of how much matter (mass) there is in a certain amount of space (volume).

Liquid Layers – Try with your neighbor

Which liquid has the highest density?

Which liquid has the lowest density?

Which liquid has the middle density?

Page 15: Density Are you dense?? (How dense R U?). What is density? Density is a comparison of how much matter (mass) there is in a certain amount of space (volume).

Liquid Layers – Try on your own!

Imagine that the liquids on the right have the following densities:15g/cm3 10g/cm3

3g/cm3 9g/cm3

7g/cm3 12g/cm3

Match the colors to the correct densities.

3g/cm3

7g/cm3

9g/cm3

10g/cm3

12g/cm3

15g/cm3

Page 16: Density Are you dense?? (How dense R U?). What is density? Density is a comparison of how much matter (mass) there is in a certain amount of space (volume).

Review

What is the formula for density?What happens if you pour together liquids

that have different densities?Will the liquid on the top have the highest

or lowest density?Will the liquid on the bottom have the

highest or lowest density?

Page 17: Density Are you dense?? (How dense R U?). What is density? Density is a comparison of how much matter (mass) there is in a certain amount of space (volume).

Super Scientist Question of the Day

Jake has a book, a ruler, and a balance. How can Jake find the density of the

book with the tools he has?

Page 18: Density Are you dense?? (How dense R U?). What is density? Density is a comparison of how much matter (mass) there is in a certain amount of space (volume).

Density Rap

http://www.educationalrap.com/song/weight-mass-volume-density.html


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