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Notes – Measurement

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Page 1: Notes – Measurement. International System of Units International System of Units - a system of measurement based on multiples of ten abbreviated S.I

Notes –Measurement

Page 2: Notes – Measurement. International System of Units International System of Units - a system of measurement based on multiples of ten abbreviated S.I

International System of Units

• International System of Units - a system of measurement based on multiples of ten

• abbreviated S.I.• the metric system• the world's most widely used

system of units

http://upload.wikimedia.org/wikipedia/en/2/2b/SI_Brochure_Cover.jpg
Page 3: Notes – Measurement. International System of Units International System of Units - a system of measurement based on multiples of ten abbreviated S.I

Length

• length - the distance between two points• meter - the unit of measure for length• the amount of space between two things• measured with a ruler or meterstick

Page 4: Notes – Measurement. International System of Units International System of Units - a system of measurement based on multiples of ten abbreviated S.I

Length

Page 5: Notes – Measurement. International System of Units International System of Units - a system of measurement based on multiples of ten abbreviated S.I

Length

How long is the pencil?

Page 6: Notes – Measurement. International System of Units International System of Units - a system of measurement based on multiples of ten abbreviated S.I

Length

53 cm

Page 7: Notes – Measurement. International System of Units International System of Units - a system of measurement based on multiples of ten abbreviated S.I

Length

How long is the eraser?

Page 8: Notes – Measurement. International System of Units International System of Units - a system of measurement based on multiples of ten abbreviated S.I

Length

5.8 cm

Page 9: Notes – Measurement. International System of Units International System of Units - a system of measurement based on multiples of ten abbreviated S.I

Liquid Volume

• volume - the amount of space a liquid takes up

• liter - the unit of measure for liquid volume

• meniscus - the convex or concave upper surface of a column of liquid

Page 10: Notes – Measurement. International System of Units International System of Units - a system of measurement based on multiples of ten abbreviated S.I

Liquid Volume

• measured with a graduated cylinder

• liquid forms a curvature called a meniscus (because of surface tension)

• always be at eye-level and read from the BOTTOM of the curve

Page 11: Notes – Measurement. International System of Units International System of Units - a system of measurement based on multiples of ten abbreviated S.I

Liquid Volume1.Always pay attention to which

marks are labeled and unlabeled.

2.Determine what the unlabeled marks represent.

3.Notice how this graduated cylinder has EVEN numbers marked.

4.You can infer that each unlabeled line is 0.2 mL.

Page 12: Notes – Measurement. International System of Units International System of Units - a system of measurement based on multiples of ten abbreviated S.I

Liquid Volume

6.6 mL

NOT 7.2 mL

You can infer that each unlabeled line is 0.2 mL.

Page 13: Notes – Measurement. International System of Units International System of Units - a system of measurement based on multiples of ten abbreviated S.I

Solid Volume

• measured with a ruler• area = length x width• volume = length x width x height• the unit is always CUBED

(centimeters)

Page 14: Notes – Measurement. International System of Units International System of Units - a system of measurement based on multiples of ten abbreviated S.I

Solid Volume

• measured with a ruler• area = length x width• volume = length x width x height• the unit is always CUBED

7 x 8 x 12 =672 cm3

(centimeters)

Page 15: Notes – Measurement. International System of Units International System of Units - a system of measurement based on multiples of ten abbreviated S.I

Mass

• mass - the amount of matter in an object• gram - the unit of measure for mass• measured with a triple beam balance

Page 16: Notes – Measurement. International System of Units International System of Units - a system of measurement based on multiples of ten abbreviated S.I

• each “beam” gives a reading and you have to add all 3 of them together

Mass

Page 17: Notes – Measurement. International System of Units International System of Units - a system of measurement based on multiples of ten abbreviated S.I

Mass

100 g 60 g+ 7.5 g167.5 g

Page 18: Notes – Measurement. International System of Units International System of Units - a system of measurement based on multiples of ten abbreviated S.I

Mass

• an electronic balance may also be used

Page 19: Notes – Measurement. International System of Units International System of Units - a system of measurement based on multiples of ten abbreviated S.I

Mass

• to find the mass of a substance in a container:

1. Place the EMPTY container on the balance.

2. Press the “tare” or “zero” button to get the mass to zero.

3. Fill the container with what you want to weigh, and record the mass.

Page 20: Notes – Measurement. International System of Units International System of Units - a system of measurement based on multiples of ten abbreviated S.I

Temperature

• temperature - the measure of the average energy of the motion of particles in a substance

• Celsius scale - the unit of measure for temperature where water freezes at 0º and boils at 100º.

Page 21: Notes – Measurement. International System of Units International System of Units - a system of measurement based on multiples of ten abbreviated S.I

Temperature

• measured with a thermometer• Pay attention to which lines are labeled

and which are not• Pay attention to if your reading is above

zero or below zero. Put a minus sign if it is below zero.

• Water freezes at 0°C and boils at 100 °C.

Page 22: Notes – Measurement. International System of Units International System of Units - a system of measurement based on multiples of ten abbreviated S.I

Temperature

SCALEeach line

is __ degree

SCALEeach line

is __ degree

SCALEeach line

is __ degrees

Page 23: Notes – Measurement. International System of Units International System of Units - a system of measurement based on multiples of ten abbreviated S.I

Temperature

SCALEeach line

is 1 degree

SCALEeach line

is 1 degree

SCALEeach line

is 2 degrees

Page 24: Notes – Measurement. International System of Units International System of Units - a system of measurement based on multiples of ten abbreviated S.I

Distance in Space

• astronomical unit - the average distance from Earth to the sun (about 150 million km)

• Use astronomcal units (AU) to measure distances within our solar system (planet to planet)

Page 25: Notes – Measurement. International System of Units International System of Units - a system of measurement based on multiples of ten abbreviated S.I

Distance in Space

• light-year - the distance light travels in one year (about 10 trillion km)

• Use light-years to measure distances outside our solar system (galaxy to galaxy, star to star)

Page 26: Notes – Measurement. International System of Units International System of Units - a system of measurement based on multiples of ten abbreviated S.I

SummarizeUnit Lab Tool

Length

Liquid Volume

Solid Volume

Mass

Temperature

Page 27: Notes – Measurement. International System of Units International System of Units - a system of measurement based on multiples of ten abbreviated S.I

SummarizeUnit Lab Tool

Length Meter (m) ruler or meterstick

Liquid Volume

Solid Volume

Mass

Temperature

Page 28: Notes – Measurement. International System of Units International System of Units - a system of measurement based on multiples of ten abbreviated S.I

SummarizeUnit Lab Tool

Length Meter (m) ruler or meterstick

Liquid Volume Liter (L) graduated cylinder

Solid Volume

Mass

Temperature

Page 29: Notes – Measurement. International System of Units International System of Units - a system of measurement based on multiples of ten abbreviated S.I

SummarizeUnit Lab Tool

Length Meter (m) ruler or meterstick

Liquid Volume Liter (L) graduated cylinder

Solid VolumeCubic Meter

(m3) ruler

Mass

Temperature

Page 30: Notes – Measurement. International System of Units International System of Units - a system of measurement based on multiples of ten abbreviated S.I

SummarizeUnit Lab Tool

Length Meter (m) ruler or meterstick

Liquid Volume Liter (L) graduated cylinder

Solid VolumeCubic Meter

(m3) ruler

Mass Gram (g) triple beam balance

Temperature

Page 31: Notes – Measurement. International System of Units International System of Units - a system of measurement based on multiples of ten abbreviated S.I

SummarizeUnit Lab Tool

Length Meter (m) ruler or meterstick

Liquid Volume Liter (L) graduated cylinder

Solid VolumeCubic Meter

(m3) ruler

Mass Gram (g) triple beam balance

Temperature °Celsius (°C) thermometer

Page 32: Notes – Measurement. International System of Units International System of Units - a system of measurement based on multiples of ten abbreviated S.I

Measurement Vocabulary

1. International system of units-

2. Length-

3. Meter-

4. Liquid volume-

5. Liter-

6. Meniscus-

7. Mass-

8. Gram-

9. Temperature-

10.Celsius scale-


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