1 / 23

240 likes | 300 Vues

Scientific Measurements. Measurement-. Ex. “a long way” vs. 161 miles. An Observation made by comparing something to a standard. -“miles” is the standard -It’s the same no matter where you go. SI- International system of Units. (French). -most of the world uses it

Télécharger la présentation
## Scientific Measurements

**An Image/Link below is provided (as is) to download presentation**
Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.
Content is provided to you AS IS for your information and personal use only.
Download presentation by click this link.
While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.
During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

**Measurement-**Ex. “a long way” vs. 161 miles An Observation made by comparing something to a standard -“miles” is the standard -It’s the same no matter where you go**SI-International system of Units**(French) -most of the world uses it (-almost the same as the metric system)**The Advantage of the Metric System**1. 2. 3.**1. Same all over the world**-Easy to share information**2. Decimal based system**-like $ : 10cents =1dime 10 dimes = 1 dollar -Multiply or divide by 10**12 in. = 1 foot**3 ft. = 1 yard 1760 yards = 1 mile ? -Not like our system SAE**3. Easy to convert**10 centimeters = 1 decimeter 10 decimeters = 1 meter 10 millimeters = 1 centimeter 10 meters = 1 decameter 10 decameters = 1 hectameter 10 hectameters = 1 kilometer**Using the Metric System**Temperature Density Volume Area Distance**1. Length / Distance**( meter stick ) Meter (m)- The basic unit of length or distance in the metric system**Kids**Moving around in the metric system X10 Hate Doing Miss Kilometer (Km) Hectometer (hm) Decameter (dkm) Meter(m) Decimeter (dm) Centimeter (cm) Millimeter (mm) Dales Crazy /10 Math**For every step you go up or down**. . /10 X10 Kilo - Hecto - Deca - Meter Deci - Centi - Milli -**Ex. cm2**2. Area – measured in square units Area = Length X Width (rectangle) A = L X W A = L X W 4 cm A = 4cm X 5cm A = 20 cm2 5 cm**3. Volume – The amount of space an object takes up**(occupied by mater) Ex. cm3 A. Liquid B. Regular Solid C. Irregular Solid**A. Liquid**Liter (L) – a commonly used unit of volume in the metric system Ex. 2 liter**A. Liquid**-To measure, use a graduated cylinder Read the bottom of the meniscus 1 L = 1000ml 1 ml = 1/1000 L**B. Regular Solid**-To measure, use a metric ruler Ex. block Volume = Length X Width X Height V = L X W X H**V = L X W X H**B. Regular Solid 3 cm 2 cm 6 cm V = 6cm X 2cm x 3cm V = 36 cm3**Ex. Bob**C. Irregular Solid -Use a graduated cylinder Water Displacement Vf - Vi = V Vf Vi 20- 15- 10- 5- 20- 15- 10- 5- 20ml – 15ml = V 5ml = V**- The amount of matter in an object**4. Mass Measure with a triple beam balance Measured in Kilograms: Kilograms (Kg) – the basic unit of mass in the metric system 1 Kg = 1000 g Or 1 g = .001Kg • 1g = paper clip • Mass vs. Weight?**- The amount of mass in an given volume**5. Density (Mass per unit volume) _Mass_ Volume Density = • Ex. Lead – 1 cm3 mass = 11.35g _11.35g_ 1 cm3 Density = = 11.35g/cm3**Will It Sink Or Will It Float?**The density of water is 1 g/cm3 < 1 g/cm3 Float!! > 1 g/cm3 Sink!!**USA - Fahrenheit - oF**6. Temperature Absolute scale of Temp. SI - Kelvin - K - • Absolute Zero – the lowest temp. that matter can have Science - Celsius - oC (Water) – freezes – 0oC – boils – 100oC

More Related