TOPIC: Measurement Aim: How do we measure length? Do Now: Scientific Method Question HW: Science Fair Problem due tomorrow!

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Presentation transcript:

TOPIC: Measurement Aim: How do we measure length? Do Now: Scientific Method Question HW: Science Fair Problem due tomorrow!

Review: To investigate how temperature affects seed germination, a student placed 10 radish seeds of the same variety on moist paper in each of 3 petri dishes and placed the dishes in the following environments: Dish # 1: Refrigerator, 5ºC Dish # 2: Room Temperature, 20ºC Dish # 3: Incubator, 37ºC 1. State the problem of this investigation. 2. Which factor is the independent variable in this investigation?

Dish # 1: Refrigerator, 5ºC Dish # 2: Room Temperature, 20ºC Dish # 3: Incubator, 37ºC 3. Identify the control group. 4. Identify 2 factors that must remain constant between all 3 petri dishes? 5. Which factor is the dependent variable? 6. What can be done to make the results of this experiment valid?

The driver of a tractor-trailer truck more than 13 feet tall attempted to drive under a 12-foot bridge. The truck was carrying chemicals to spokesman Stephen MacDonald said. The city’s hazardous materials team responded, but no chemicals or fuel ultimately leaked.

A known amount of measurement Yard, mile, meter, pound, gram, liter Unit

1. METRIC SYSTEM Used by most of the world SI = Systems International Systems of measurement

2. ENGLISH SYSTEM inch, foot, yard, pound

1.METER (m) Ruler/meter stick Length

1 cm 1mm

1 cm = 10 millimeters

1 m = 100cm = 1000cm

1 mm = width of a dime

1 kilometer (km) = 1000m

Let’s summarize… 1.Explain the difference between the two systems of measurement. 2.What are the SI units for length? 3.How many centimeters make up a meter? 4.How many millimeters make up a centimeter? 5.How many millimeters make up a meter? 6.How many meters make up a kilometer?

Review: Which group of measurement units is correctly arranged in order of increasing size? a.millimeter, centimeter, meter, kilometer b.millimeter, kilometer, centimeter, meter c.meter, kilometer, centimeter, millimeter d.kilometer, centimeter, millimeter, meter

In the metric system, the height of a building would be given in a.centimeters b. milliliters c. meters d. millimeters