Topics: 1)Metric System 2)Density

a system of international (SI) measurements based

on multiples of 10

When Measuring… Use… (Base Unit)

temperature Celsius (°C)

Length(distance) meters (m)

mass grams (g)

volume liter (L)

l x w x h (m3)

What is the difference between mass and weight?

Mass = The amount of matter in an object.

Weight = The measure of gravitational force

largest

smallest

There are 4 metric (SI) units used in this class:

kilo= 1000 deci= 1/10 or .1

centi= 1/100 or .01

milli= 1/1000 or .001

centimeter millimeter

1 meter= 1000 millimeters (mm)

1centimeter(cm)=10 millimeters(mm)

1 meter=100 centimeters (cm)

Pop Quiz= What’s that

measurement?!

centimeter kilometer milligram

millimeter gram kilogram

celsius meter liter milliliter

length of the Mississippi River

•kilometer

centimeter kilometer milligram

millimeter gram kilogram

celsius meter liter milliliter

mass of a paper clip?

•milligram

centimeter kilometer milligram

millimeter gram kilogram

celsius meter liter milliliter

mass of an elephant?

•kilogram

centimeter kilometer milligram

millimeter gram kilogram

celsius meter liter milliliter

width of a fingernail?

•millimeter

centimeter kilometer milligram

millimeter gram kilogram

celsius meter liter milliliter

width of a TV screen?

•centimeter

centimeter kilometer milligram

millimeter gram kilogram

celsius meter liter milliliter

volume of juice in a paper cup?

•milliliter

centimeter kilometer milligram

millimeter gram kilogram

celsius meter liter milliliter

mass of a bowl of cereal?

•grams

centimeter kilometer milligram

millimeter gram kilogram

celsius meter liter milliliter

amount of salt in an order of french fries?

•milligram

centimeter kilometer milligram

millimeter gram kilogram

celsius meter liter milliliter

amount of soda in a large plastic bottle?

•liter

centimeter kilometer milligram

millimeter gram kilogram

celsius meter liter milliliter

temperature of a bowl of soup?

•Celsius

is the mass of an object per unit volume (D=m/v). The unit for density is a combination of more than one fundamental unit which is called a derived unit

The density of water is 1.0 g/mL

•If an object’s density is greater than 1.0 g/mL will it sink or float?

http://www.explorelearning.com/index.cfm?method=cResource.dspView&ResourceID=17

Will a Diet Pepsi float or sink?

Regular Pepsi?

What do you base your answer on?

What did you see?

Were you correct in your predictions?

Why or why not?

http://www.youtube.com/watch?v=3MUAL3zwN-k

Units

UNIT NUMBER OF METERS

Meter (m) =1 meter

Kilometer (km) = 1000 meters

Centimeter (cm) = .01 meters

Millimeter (mm) = .0001 meters

1m = 100cm

1mm=.1cm

1cm= 10 mm