1. Different units are used to describe different types of measurements. Different units are used to describe different types of measurements. For example, length is described using meters (not feet) and time is described using seconds (sometimes minutes or hours). For example, length is described using meters (not feet) and time is described using seconds (sometimes minutes or hours).

3. Different tools are used to measure different things in Science. Some common things that we will measure are: temperature, mass, time and volume.

4. Volume is the space occupied by an object. Volume can be measured in several different ways depending on the state of matter (solid, liquid or gas). For solids with regular dimensions, simply use L x W x H (cm 3 ) For irregularly shaped solids, use the displacement method (mL) For liquids, use a graduated cylinder (mL)

5. You must use this method if you have an irregularly shaped object. You must use this method if you have an irregularly shaped object. Fill a graduated cylinder with a certain amount of water and jot down the mL (don’t forget to look at the MENISCUS!) Fill a graduated cylinder with a certain amount of water and jot down the mL (don’t forget to look at the MENISCUS!) Drop the object in and subtract FINAL-INITIAL Drop the object in and subtract FINAL-INITIAL 5-3.4=1.6mL 5-3.4=1.6mL

6. You Try!!! What is the reading of the graduated cylinder on the left? What is the volume of the dinosaur?

7. Answers!!! What is the reading of the graduated cylinder on the left? 4.8 mL What is the volume of the dinosaur? 5.6-4.8= 0.8 mL

8. When reading a graduated cylinder, you must look at the meniscus, not the top of the water level. When reading a graduated cylinder, you must look at the meniscus, not the top of the water level. What is a meniscus??? What is a meniscus??? Little U shaped dip in the water level. Little U shaped dip in the water level. There are 6.8 mL in this graduated cylinder. There are 6.8 mL in this graduated cylinder.

9. Mass is measured using the triple beam balance and the unit we will use most is grams. Mass is measured using the triple beam balance and the unit we will use most is grams.

10. 1 st you must zero out the scale (be sure all rider beams are on zero and that the pointer mark is pointing to zero) 1 st you must zero out the scale (be sure all rider beams are on zero and that the pointer mark is pointing to zero) Next, place the object you are measuring on the measurement tray and adjust riders until pointer mark is back to zero…and that’s it!!!! Next, place the object you are measuring on the measurement tray and adjust riders until pointer mark is back to zero…and that’s it!!!!

12. Used when you need to convert from one unit to another. Mass (weight) = grams Liquid = liters Length = meters Ex. You might be given a distance in kilometers and asked to convert to meters…how do you do it???

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

14. Decimal Review -Where is the decimal in this number: 500 -If you were told to move the decimal two places to the left, what would the new number be? **Remember- In a whole number (no decimals), it is ALWAYS understood that the decimal lives to the right of the whole number. Think about money- $4 is the same as $4.00