Experimental measurements must not

only be RELIABLE and ACCURATE but also must be easily understood by

others

a decimal system of measurement based on 10

Units of SI used in this class:

Kilo= 1000

centi= 1/100 or .01

deci= 1/10 or .1

milli= 1/1000 or .001

When Measuring… Use…

length meters (m)

volume (lxwxh) liter (L)

mass grams (g)

temperature Celsius (°C)*Mass is a measure of amount of matter in an object.

*Weight is measure of gravitational force

centimetermillimeter

1 meter=100 centimeters (cm)

1 meter= 1000 millimeters (mm)

1 cm= 10mm

centimeter kilometer milligram

millimeter gram kilometer

Celcius meter liter milliliter

length of the Mississippi River

•kilometer

centimeter kilometer milligram

millimeter gram kilometer

Celcius meter liter milliliter

mass of a paper clip

•milligram

centimeter kilometer milligram

millimeter gram kilometer

Celcius meter liter milliliter

mass of an elephant

•kilogram

centimeter kilometer milligram

millimeter gram kilometer

Celcius meter liter milliliter

width of a fingernail

•millimeter

centimeter kilometer milligram

millimeter gram kilometer

Celcius meter liter milliliter

width of a TV screen

•centimeter

centimeter kilometer milligram

millimeter gram kilometer

Celcius meter liter milliliter

volume of juice in a paper cup

•milliliter

centimeter kilometer milligram

millimeter gram kilometer

Celcius meter liter milliliter

mass of a bowl of cereal

•grams

centimeter kilometer milligram

millimeter gram kilometer

Celcius meter liter milliliter

amount of salt in an order of french fries

•milligram

centimeter kilometer milligram

millimeter gram kilometer

Celcius meter liter milliliter

amount of soda in a large plastic bottle

•liter

centimeter kilometer milligram

millimeter gram kilometer

Celcius 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 and is therefore 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?

Do two candy bars have the same density?