OATMEAL TREATS Combine together the following ingredients: some buttera bunch of nuts some sugara whole lot of oatmeal a little salta little baking powder a lot of flour Mix well, heat up the oven, and bake for a long time What is wrong with this recipe? Are measurements important?

METRIC SYSTEM Developed in 1791 and is currently used almost everywhere in the world, except the US. Our scientists, hospitals, researchers, etc use this system. Système International d'Unités Système International d'Unités International System of Units or SI Based on the number 10

Prefixes, Numbers and Symbols King Henry Doesn’t Usually Drink Chocolate Milk How to remember the staircase?

LENGTHis the distance between 2 points. The standard unit is the meter. 1m = 39.4 inches Smaller objects are measured using the cm. 2.5cm =1 inch 100cm = 1m Measuring instrument meter stick ruler Even smaller objects are measured using the mm. Long distances = km 1 km =.62 miles 1km = 1000m

The amount of space an object occupies. Standard unit is the liter = l or L. Small amounts = mL _______mL = 1 L LARGE amounts = kl ________L = 1 kl How many kl is 3250L ?3.250kl What instrument is used to find the volume of a liquid? graduated cylinder

Graduated cylinder When measuring liquid volume it is important to read the graduated cylinder correctly. You eye should be level with the top of the liquid and you should read the bottom of the meniscus.

You would read this as ________

How may mL is showing in these graduated cylinders?

Volume of rectangular solids length 10cm Height = 4cm Width = 5cm Formula: V = length x width x height Find the volume of the box. 200cm 3

VOLUME What would the volume of a cube that has the l = 1cm, w = 1cm, and the h = 1cm be? 1cm 3 A 1cm 3 hollow cube holds __ml of H 2 O, therefore 1000cm 3 = ____ ml or 1 ___

MASS MASS: The amount of matter in an object. Standard unit is the kilogram kg Common unit - the gram. A large paper clip masses about 1g. Extremely small items are massed using mg for the unit. 1 g = _____ mg. How many mg would = 1kg? Instrument used to find mass: Triple beam or electronic balance

What is the mass on the balance?

Triple Beam Balance The weight of a can of Diet DEW is? ______________________

Weight A measure of attraction between two objects due to gravity Standard unit = Newton (N) A 1kg object is pulled to Earth at a rate of 9.8 newtons, so the weight would = 9.8N. Weight = mass x 9.8 newtons (on Earth at sea level). Note gravitational pull would be less on a mountain than at sea level, because you are farther away from the center of Earth.

DENSITY DENSITY The amount of matter that occupies a space D = mass (g) volume (cm 3 ) 19.3 g/cm 3 2cm 3cm4cm V= 2cm x 3cm x 4cm V= _______ 48 g D = The density of water is 1.0g/cm 3

TIME the interval between two events Standard unit is the __________ Common units are minutes and hours

Temperature The standard unit for temperature is the Kelvin. We use Celsius and Fahrenheit in everyday life.