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# Unit 3 lesson 3

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### Unit 3 lesson 3

1. 1. Unit 3 Lesson 3 Density
2. 2. Remember Matter? <ul><li>Matter – anything that has mass and takes up space </li></ul>
3. 3. Physical Properties <ul><li>Characteristics of materials </li></ul><ul><li>Color, shape, texture </li></ul><ul><li>VOLUME and DENSITY </li></ul>
4. 4. Volume <ul><li>Amount of space that matter takes up </li></ul>
5. 5. Density <ul><li>If you know mass and volume of an object, you can calculate density </li></ul><ul><li>Amount of mass in a defined amount of space </li></ul>
6. 6. Compare Density of 2 Blocks <ul><li>Wood and aluminum </li></ul><ul><li>Same size </li></ul><ul><ul><li>Take up same amount of space </li></ul></ul><ul><ul><li>Same volume </li></ul></ul><ul><li>Different materials </li></ul><ul><ul><li>Different masses </li></ul></ul>
7. 7. Compare Density of 2 Blocks <ul><li>Heavier block more dense </li></ul><ul><li>Greater mass in the same volume </li></ul>
8. 8. Compare Density of 2 Blocks <ul><li>Place blocks in water to compare densities </li></ul><ul><li>Sink or Float </li></ul><ul><ul><li>If it sinks its LESS DENSE </li></ul></ul><ul><ul><li>If it floats its MORE DENSE </li></ul></ul>
9. 9. Compare Density of 2 Blocks <ul><li>Wood FLOATS </li></ul><ul><li>Aluminum SINKS </li></ul><ul><li>Wood is LESS DENSE </li></ul><ul><li>Aluminum is MORE DENSE </li></ul>
10. 10. Liquid Density Column <ul><li>Pour liquids that have different densities </li></ul><ul><li>Form liquid layers </li></ul>Highest density liquid on bottom Lowest density liquid on top
11. 11. Density
12. 12. Finding Density <ul><li>Need mass and volume </li></ul><ul><li>Mass </li></ul><ul><ul><li>Balance scale </li></ul></ul>
13. 13. Finding Density <ul><li>Volume </li></ul><ul><ul><li>Ruler </li></ul></ul><ul><ul><li>Length x Width x Height </li></ul></ul><ul><ul><li>cm 3 </li></ul></ul>
14. 14. Finding Density <ul><li>Volume </li></ul><ul><ul><li>Graduated Cylinder </li></ul></ul>
15. 15. Density Problem <ul><li>Paperclip has a mass of 9g and a volume of 3mL </li></ul><ul><li>What is its density? </li></ul>