Warm Up # 3 Convert the following units: 24 m = ____ mm?

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Presentation transcript:

Warm Up # 3 Convert the following units: 24 m = ____ mm? 567 dL = ____ kL? Express the following in scientific notation: 490 x 12.0 = _____? 30000 x 200 = ______?

International System of Units and T-Charts Chapter 3.2 International System of Units and T-Charts

Review: Metric System MAJOR METRIC PREFIXES: Kilo (k), Hecto (h), Deka (da), BASE (meter, liter, gram), Deci (d), Centi (c), Milli (m) OTHERS: Micro (µ) (1 meter = 1x106 µ m) Nano (n) (1 meter = 1x109nm) Mega (M) (1 meter = 1x10-6Mm)

What the Metric System Means… Meter (m) Measures Distance – how far apart objects are Liter (L) Measures Volume – amount of space an object takes up Gram (g) Measures Mass – how much matter an object has

Mass vs. Weight Mass – how much matter is in an object NO GRAVITY Mass stays same anywhere Grams, kilograms, etc. Weight – mass + gravity Changes depending on where you are Kilograms, pounds, etc. One more…

Important Metric to Amurrican Conversions Distance: Volume: 1 in. = 2.54 cm 12 in. = 1 foot 1 gallon = 3.7 liters 1 mile = 5,280 feet 3.1 miles = 5 kilometers Time: 1 hour = 3600 seconds Temperature: K = Kelvin – another method of measuring temperature From oC to K = ADD 273 From K to oC = SUBTRACT 273

Setting up T-Chart 20 minutes Example: Maria took 20 minutes to take her test. How many seconds is that? Start - Write what you’re given, then draw T 20 minutes

T- Chart Continued 20 minutes Seconds Minutes Next – convert units (MINUTES TO SECONDS) Start with minutes – put it on the bottom End with seconds – put it on the top 20 minutes Seconds Minutes

T-Chart Continued 20 minutes 60 Seconds 1 Minute 20 x 60 1 Finally – put 1 next to larger unit (minutes) Convert smaller unit (seconds) Cross out same units on top and bottom Multiply top numbers together Divide by bottom number 20 minutes 60 Seconds 1 Minute 20 x 60 1

Practice Problem A MULTI-STEP T-CHART If there are 10. boxes of grapes in a crate, and each box contains 3.0 bunches, and each bunch contains 29 grapes, how many grapes are in eighteen crates?

Something Harder: km/hr into m/s Start: 50.0 km/hr = ____ m/s [Kilometers per hour  meters per second] Answer: (50.0 x 100 x 1) ÷ (1 x 3600) = 13.9 m/s (3 sig figs) 50.0 kilometers 1000 meters 1hour 3600 seconds hour 1 kilometer

Quick Quiz #3: McKayla Maroney runs 30. meters before vaulting perfectly (because she’s awesome). How many inches is this? I am going at a speed of 20 miles per hour. What is this speed in kilometers per second? If there are 15 boxes of cherries in a crate, and each box contains 3.0 bunches, and each bunch contains 30. cherries, how many cherries are in 5.0crates?