1 / 13

Density

Density . What is density ?. Density compares the mass of an object to its volume. Which one is more dense?. Demonstration: People in a square How about this: Which square is more dense? How do you know?. Which one is more dense?. Now which one is more dense? Why? . What is density?.

gavril
Download Presentation

Density

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Density

  2. What is density? • Density compares the mass of an object to its volume

  3. Which one is more dense? • Demonstration: People in a square • How about this: Which square is more dense? • How do you know?

  4. Which one is more dense? • Now which one is more dense? • Why?

  5. What is density? • Density = mass OR. volume • Units for density: g cm3 • Why are these the units for density? ALWAYS REMEMBER UNITS!

  6. V = ? To find volume, use… a formula 1. V = p r2 h V = l w h water displacement 2. Vfinal Vinit Vobject = Vfinal – Vinit

  7. Equation of a Straight Line y = mx + b Slope Y intercept

  8. Slope of a Straight Line The Slope of a straight line shows how steep a straight line is. Calculate: Divide the change in height by the change in horizontal distance Slope = Change in Y Change in X

  9. Examples: density Mass (g) Slope = 3 g = 1 g 3mL mL Volume (mL) Slope = density = 4 g = 2 g 2mL mL Mass (g) Volume (mL)

  10. Solving problems in science using the GUESS strategy

  11. Let’s try a density problem together • Frank has a paper clip. It has a mass of 9g and a volume of 3cm3. What is its density? • Frank also has an eraser. It has a density of 3g/cm3, and a volume of 2cm3. What is its mass? m= 9 g V= 3 cm3 D D= M V D = 9g 3 cm3 3 g cm3 d= 3 g/cm3 V= 2 cm3 M D= M V 3 = m 2 6 g

  12. Liquid Layers – Try with your neighbor • Which liquid has the highest density? • Which liquid has the lowest density? • Which liquid has the middle density?

  13. Liquid Layers • Check out this picture. • Which layer has the highest density? How do you know? • Which layer has the lowest density? • 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

More Related