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DCA Week 24 Review 6 th Grade

DCA Week 24 Review 6 th Grade. Feb 26, 2013. Minerals. 6 Ways to Classify Minerals: Hardness (How it breaks) Luster Density Texture Color Streak Remember: Streak shows the true color of the mineral. Streaks are more reliable than color.

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DCA Week 24 Review 6 th Grade

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  1. DCA Week 24 Review 6th Grade Feb 26, 2013

  2. Minerals • 6 Ways to Classify Minerals: • Hardness (How it breaks) • Luster • Density • Texture • Color • Streak Remember: Streak shows the true color of the mineral. Streaks are more reliable than color.

  3. Rock Cycle: Classified by how they are formed • Sedimentary Rock: pieces of sediment compacted and cemented together • Metamorphic Rock: Heat and pressure • Igneous Rock: Volcanic Activity (cooled and hardened)

  4. Living Matter • Remember in the beginning of the school year we talked about the elements that are in living matter: • Oxygen & Hydrogen are 2 elements in living matter

  5. Pulleys • Pulleys are used mainly to help decrease the amount of force needed to pull up an object.

  6. Speed • average speed S= D T • S= D ÷ T • Example: • A truck driver drove 270 km in 3 hours. What is the trucks average speed? • Answer: 90 km/h

  7. Speed • Find the average speed:

  8. Distance Vs Time • Car 4 has the LOWEST average speed and car 1 has the HIGHEST average speed. • The steepness of a slope on graph shows how quick or slow an object is moving • Which car is moving the fastest? • Which car is moving the slowest? • Remember when graphing Distance and time that Distance must be on the Y-axis while Time is on the X-axis

  9. Linear Vs. Nonlinear • Linear: straight line • Nonlinear: not a straight line

  10. Lets practice calculating average speed: • Mary ran 1760 yards in 2 hours. What was Mary’s average speed? • John rode his bike 6 km in 3 hours. What was John’s average speed? • A car travels up a hill at 90 km in 2 hours. What is the average speed?

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