Presentation on theme: "T. Trimpe 2008 http://sciencespot.net/ Lesson 1: Length T. Trimpe 2008 http://sciencespot.net/"— Presentation transcript:
1 T. Trimpe 2008 http://sciencespot.net/ Lesson 1: LengthT. Trimpe
2 English vs. Metric Units Which is longer?A. 1 mile or 1 kilometerB. 1 yard or 1 meterC. 1 inch or 1 centimeter1.6 kilometers1 mile1 yard = meters1 inch = 2.54 centimetersLeft Image: Right Image:
3 Click the image to watch a short video about the meter. Metric UnitskmmcmmmThe basic unit of length in the metric system in the meter and is represented by a lowercase m.Standard: The distance traveled by light in absolute vacuum in 1⁄299,792,458 of a second.Metric Units1 Kilometer (km) = 1000 meters1 Meter = 100 Centimeters (cm)1 Meter = 1000 Millimeters (mm)Click the image to watch a short video about the meter.Which is larger?A. 1 meter or 105 centimetersB. 4 kilometers or 4400 metersC. 12 centimeters or 102 millimetersD millimeters or 1 meter
4 Measuring Length How many millimeters are in 1 centimeter? 1 centimeter = 10 millimetersHow many millimeters are in 1 centimeter?What is the length of the line in centimeters? _______cmWhat is the length of the line in millimeters? _______mmWhat is the length of the line to the nearest centimeter? ________cmHINT: Round to the nearest centimeter – no decimals.Ruler:
5 T. Trimpe 2008 http://sciencespot.net/ Lesson 2: MassT. Trimpe
6 English vs. Metric Units 1 pound = gramsWhich is larger?1. 1 Pound or 100 Grams2. 1 Kilogram or 1 Pound3. 1 Ounce or 1000 Milligrams100 kilogram = 220 pounds1 ounce of gold = 28,349.5 milligrams
7 Metric UnitskggcgmgKilogram PrototypeMass refers to the amount of matter in an object.The base unit of mass in the metric system in the kilogram and is represented by kg.Standard: 1 kilogram is equal to the mass of the International Prototype Kilogram (IPK), a platinum-iridium cylinder kept by the BIPM at Sèvres, France.Metric Units1 Kilogram (km) = 1000 Grams (g)1 Gram (g) = 1000 Milligrams (mg)Click the image to watch a short video about mass.Which is larger?A. 1 kilogram or 1500 gramsB milligrams or 1 gramC. 12 milligrams or 12 kilogramsD. 4 kilograms or 4500 gramsKilogram Prototype Image -
8 _______ + ______ + _______ = ________ g Measuring MassWe will be using triple-beam balances to find the mass of various objects.The objects are placed on the scale and then you move the weights on the beams until you get the lines on the right-side of the scale to match up.Once you have balanced the scale, you add up the amounts on each beam to find the total mass.What would be the mass of the object measured in the picture?_______ + ______ + _______ = ________ gTop Image: Bottom Image:
9 Measuring Mass – Triple-Beam Balance 1st – Place the film canister on the scale.2nd – Slide the large weight to the right until the arm drops below the line. Move the rider back one groove. Make sure it “locks” into place.3rd – Repeat this process with the top weight. When the arm moves below the line, back it up one groove.4th – Slide the small weight on the front beam until the lines match up.5th – Add the amounts on each beam to find the total mass to the nearest tenth of a gram.Click here to try an online activity.
10 T. Trimpe 2008 http://sciencespot.net/ Lesson 3: VolumeT. Trimpe
11 English vs. Metric Units Which is larger?A. 1 liter or 1 gallonB. 1 liter or 1 quartC. 1 milliliter or 1 fluid ounce1 fl oz = ml1 12-oz can of soda would equal approximately 355 ml.1 gallon = 3.79 litersIt would take approximately 3 ¾ 1-liter bottles to equal a gallon.1 quart = liters
12 Click the image to watch a short video about volume. Metric UnitskLcLmLLVolume is the amount of space an object takes up.The base unit of volume in the metric system in the liter and is represented by L or l.Standard: 1 liter is equal to one cubic decimeterMetric Units1 liter (L) = 1000 milliliters (mL)1 milliliter (mL) = 1 cm3 (or cc) = 1 gram*Which is larger?Click the image to watch a short video about volume.A. 1 liter or 1500 millilitersB. 200 milliliters or 1.2 litersC. 12 cm3 or 1.2 milliliters** When referring to water Liter Image:
13 Measuring VolumeWe will be using graduated cylinders to find the volume of liquids and other objects.Read the measurement based on the bottom of the meniscus or curve. When using a real cylinder, make sure you are eye-level with the level of the water.What is the volume of water in the cylinder? _____mLWhat causes the meniscus?A concave meniscus occurs when the molecules of the liquid attract those of the container. The glass attracts the water on the sides.Top Image: Bottom Image:
14 Measuring Liquid Volume What is the volume of water in each cylinder?Images created atABCPay attention to the scales for each cylinder.
15 Measuring Solid Volume 10 cm9 cm8 cmWe can measure the volume of regular object using the formula length x width x height._____ X _____ X _____ = _____We can measure the volume of irregular object using water displacement.Amount of H2O with object = ______ About of H2O without object = ______ Difference = Volume = ______Click here for an online activity about volume. Choose Lessons Volume & Displacement
17 What is density?Density is a comparison of how much matter there is in a certain amount of space.
18 Which one is more dense? Demonstration: People in a square How about this: Which square is more dense?
19 Which one is more dense?Now which one is more dense?
20 What is density? Density = mass OR mass ÷ volume. volume Units for density: gcm3Why are these the units for density?ALWAYS REMEMBER UNITS!
21 Let’s try a density problem together Frank has a paper clip. It has a mass of 9g and a volume of 3cm3. What is its density?Frank also has an eraser. It has a mass of 3g, and a volume of 1cm3. What is its density?
22 Liquid LayersIf you pour together liquids that don’t mix and have different densities, they will form liquid layers.The liquid with the highest density will be on the bottom.The liquid with the lowest density will be on the top.
23 Liquid LayersCheck out this picture from your book. Which layer has the highest density?Which layer has the lowest density?Imagine that the liquids have the following densities:10g/cm3. 3g/cm3.6g/cm3. 5g/cm3.Which number would go with which layer?
25 How many jumps does it take? Ladder Method123KILO 1000 UnitsHECTO 100 UnitsDEKA 10 UnitsDECI 0.1 UnitMeters Liters GramsCENTI 0.01 UnitMILLI UnitHow 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 = _________ mStarting PointEnding PointHow many jumps does it take?4.1__.2__.3__.= 4000 m
26 Conversion Practice King Henry Died Drinking Chocolate Milk Try these conversions using the ladder method.1000 mg = _______ g 1 L = _______ mL 160 cm = _______ mm14 km = _______ m 109 g = _______ kg 250 m = _______ kmCompare using <, >, or =.56 cm m 7 g mg