Date: Dec 15, 2014 Page: Table of Contents p. 1. W. O. D: Last 5 pages Date: Dec 15, 2014 Page: Table of Contents p. 1 W.O.D: Last 5 pages Warm-ups: Front Cover W.O.D. Motion - Object changes position over time, relative to a reference point. Question: Choose a reference point in the room. Describe your seat in the room relative to that reference point. (For example: Ms Johnson’s desk is 2 meters northeast of the door.)

Today’s plan Warm- up Organize Speed notes Distance/Time graphing - together Finish questions from “Read about Speed” Physical Science text book. p. 118-123 Finish ladder questions Reflect

Table of Contents p. 1 Rube Goldberg Machine Drawing p. 2 SI units/Webquest p. 3 Metric Lab p. 4 Text reading on Speed p. 5 Metric Ladder p. 6 Metric Ladder questions p. 7 Speed notes/d/t Graph p. 8

Table of Contents p. 1

Speed = Distance/Time v = d/t (We’ll use velocity and speed interchangibly for now) We will use m/s (meters/second) for our answers.

Speed = Distance/Time v = d/t (We’ll use velocity and speed interchangibly for now) What is your average speed if you take 0.5 hours to jog 4000 m? Set up the formula. Extend:Convert your calucations to answer in m/s.

Practice problem: Remember, v = d/t Physicists uses the SI units m/s (meters/second) to measure speed. If you walk at 2 meters per second (m/s), how far do you walk in 12 seconds?

If the average speed of a car is 110km/h, how long will it take the car to travel 715 km/h?

Speed Reading SNB p. 5 Complete reading in Physical Science text book. p. 118-123 Do reading checks as you read (label as reading check #1, reading check #2, etc). Complete questions 1-7 from page 123 Extend: Go to p. 142-143. Do ?’s 6, 10, 11, 14, 17, 18, 19,

How many jumps does it take? Ladder Method 1 2 3 KILO 1000 Units HECTO 100 Units DEKA 10 Units DECI 0.1 Unit Meters Liters Grams CENTI 0.01 Unit MILLI 0.001 Unit How do you use the “ladder” method? 1st – Determine your starting point. 2nd – Count the “jumps” to your ending point. 3rd – Move the decimal the same number of jumps in the same direction. 4 km = _________ m Starting Point Ending Point How many jumps does it take? 4. 1 __. 2 __. 3 __. = 4000 m

Conversion Practice Try these conversions using the ladder method. 1000 mg = _______ g 1 L = _______ mL 160 cm = _______ mm 14 km = _______ m 109 g = _______ kg 250 m = _______ km Compare using <, >, or =. 56 cm 6 m 7 g 698 mg

Metric Conversion Challenge Write the correct abbreviation for each metric unit. 1) Kilogram _____ 4) Milliliter _____ 7) Kilometer _____ 2) Meter _____ 5) Millimeter _____ 8) Centimeter _____ 3) Gram _____ 6) Liter _____ 9) Milligram _____ Try these conversions, using the ladder method. 10) 2000 mg = _______ g 15) 5 L = _______ mL 20) 16 cm = _______ mm 11) 104 km = _______ m 16) 198 g = _______ kg 21) 2500 m = _______ km 12) 480 cm = _____ m 17) 75 mL = _____ L 22) 65 g = _____ mg 13) 5.6 kg = _____ g 18) 50 cm = _____ m 23) 6.3 cm = _____ mm 14) 8 mm = _____ cm 19) 5.6 m = _____ cm 24) 120 mg = _____ g

Compare using <, >, or =. 25) 63 cm 6 m 27) 5 g 508 mg 29) 1,500 mL 1.5 L 26) 536 cm 53.6 dm 28) 43 mg 5 g 30) 3.6 m 36 cm

Olympic Speed Skating 0 m/s 12 m/s How many miles/hour is Shani Davis traveling? There are 1610 meters in a mile.

Reflection (back-side of warm-up sheet) What is the difference between speed and velocity? Homework: Pick up a bus schedule from the bus you ride home. Bring it to class tomorrow. (5 points).

Domino Derby Set up 25 equally spaced dominoes in a straight line. Use a meter stick to measure the total length of the row of dominoes, and record the length. Use a stopwatch to measure how long it takes the dominoes to fall. Predict what would happen if the distance between the dominoes changed. Test your prediction.