Bell ringer 01
Bell ringer 02
Bell ringer 03
To be clear:
If there are three names on the board, I will not open the store at
the end of the class period.
Measurements
Objective: Achievers on the ROAD to College will be able to describe and use different types of measurement tools including: rulers, thermometers, scales, microscopes, balances, calculators).
Qualitative vs. Quantitative Measurements
A (1)qualitative measurement deals with descriptions, data can be observed but not measured. Examples: (2)colors, textures, smells,
tastes, appearances
A (3)quantitative measurement deals with numbers; data can be measured/counted. Example: (4)height, length, area, weight,
speed, time, temperature, costs, age
Qualitative vs. Quantitative Measurements
LengthWhen we measure length there is
only one unit we use, meters
The tool we use is a (5)meter
stick
LengthA meter stick contains (7) 100 cm
and 1000 mm.
Mass
When we measure mass, or
(8)how much stuff an object has in
it, we use (9)grams. Most of you are measured in kilograms. There are
1000 grams in one
kilogram
Mass
There are a couple of different tools for measuring mass(10) Triple beam balance: that’s
what we use in this school.(11) Electronic balance: this is what you
may use in college, its very precise(12)Spring scale: for measuring very
small things
Triple Beam Balance
Spring Scale
Electronic balance
LiquidsWhen we measure liquids the unit we
use is (13)Liter. Often in science we will use a
milliliter. There are 1000 mL in a
liter
LiquidsThere are many tools we can use to
measure liquids:(15) Graduated cylinder: which
is best for measuring amounts that must be
very precise.To determine the volume of the liquid, read
the bottom of the curve. This curve is called the (14)Meniscus.
Graduated Cylinder
Beaker
Pipette
Flask
VolumeTool: (16)meter stick
Units: meters cube (m3)
Volume = length x width x height
length
width
height
TemperatureThe when we measure
temperature the unit we measure
it in is degrees (18)Celsius
The tool we always use is a
(17)thermometer
Guided Practice: Test Questions
Which of the following can NOT be used to measure volume?
A. Balances C. Pipettes
B. Beakers D. Graduated cylinders
Guided Practice: Test Questions
Which of these will give the MOST accurate and precise measurement of 15 mL of liquid to be placed in a test tube?
A A 100 mL graduated cylinder
B A 25 mL graduated cylinder
C A 10 mL beaker
D A 50 mL beaker
Guided Practice: Test Questions
Aisha measured the volume of a solvent using a graduated cylinder. What is the correct volume in mL?
A. 136 mL
B. 138 mL
C. 141 mL
D. 142 mL
Independent PracticeUsing your notes (or if you’re a college bound
scholar, not using your notes) Answer the questions on this worksheet
Anything you do not finish will be homework