8-r common unit of measurement 1/1/2014 questions note s big idea: what are the units of measurement...

8-R

Common Unit of Measurement

04/10/23

Questions

Notes

Big Idea:•What are the units of measurement commonly used in science?

What is MASS?

• Definition:• The amount of matter

(stuff) in an object• NOT WEIGHT

• Tool used to measure:• Triple Beam Balance

8-L

04/10/23

MassWeig

htThe SI unit of Mass is KilogramThe SI unit of Weight is Newton

Mass is the amount of matter present in a body and is an intrinsic property of the body. Mass of an object remains the same always at any place.

Weight is a measure of how strongly gravity pulls on that matter.

Mass is measured using a pan balance, a triple-beam balance, lever balance or electronic balance.

Weight is measured using a spring balance

8-R (cont.)

04/10/23

Questions

Notes

•Units and Interesting Facts:• 1 kilogram = 2.2 lbs• 1 kilogram = 1000

grams (a small cantaloupe)• 1 gram (a paper clip)• 1000 milligram = 1

gram • 1 mg (a grain of

sand)

8-L (cont.)

04/10/23

KILO1000Units

HECTO100Units

DEKA10Units

DECI1/10Unit

CENTI1/100Unit

MILLI1/1000Unit

Meter

Gram

Liter

8-R (cont.)

04/10/23

Questions

Notes

What is LEGNTH?

• Definition:• The distance between 2

points• Tool/s used to measure:• Ruler• Meter Stick

• Units and Interesting Facts:• 1 mile = 1.6 km• 1 kilometer = 1000 meters• 1 meter (about 3 ft)• 100 centimeter = 1 meter• 1cm (about width of pinky)• 1000 millimeter = 1 meter• 1mm (about thickness of

thumb nail)

8-L

04/10/23Try these

conversions, using the ladder method.

8-R (cont.)

04/10/23

Questions

Notes•Definition:

• The amount of space an object takes up

•Tool/s used to measure:• Ruler (l x w x h)• Graduated cylinder

•Units and Interesting Facts:• 1 liter (liter bottle of soda)• 1000 milliliter = 1 liter (1mL = 2 drops)

What is VOLUME?

8-L (cont.)

04/10/23

The curve of the top surface of water in a graduated cylinder is called _________.

MENISCUS

8-R (cont.)

04/10/23

Questions

Notes

•Definition:• The amount of

movement of molecules (how hot)

• Tool/s used to measure:• Thermometer

•Units and Interesting Facts:• 100° C = water boils• 37° C (98.6° F) =

ave. body temp• 0°C (22°F) = water

freezes

What is TEMPERATURE?

8-L

04/10/23

8-R (cont.)

04/10/23

Questions

Notes

•Definition:• The continuum of

experience in which events pass from past, present and to the future

• Tool/s used to measure:• Stop watch

•Units and Interesting Facts:• Seconds• you know this already

What is TIME?

8-L

04/10/23

1)Kilogram _____ 2)Milliliter _____

3)Kilometer _____4)Meter _____ 5)Millimeter _____ 6)Centimeter _____7)Gram _____ 8)Liter _____ 9)Milligram _____

Write the correct abbreviation for each metric unit.

7-R

04/10/23

Questions

NotesWhat is

DENSITY?

• Definition:• The measure of how

much mass is contained in a given volume.

• Units and Interesting Facts:• kg/m3

• g/cm3

• g/mL• Density of water = 1

g/cm3 = 1 g/mL

8-L

04/10/23

Summary:

*Make sure you address all three essential questions:1.What are the units of measurement commonly used in science?2.How important is to have a standard of measurement?3.How are values transposed from one unit to the other?