1. Bell ringer 01

2. Bell ringer 02

3. Bell ringer 03

4. To be clear:
If there are three names on the board, I will not open the store at the end of the class period.

5. 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).

6. 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

7. Qualitative vs. Quantitative Measurements

8. Length When we measure length there is only one unit we use, meters
The tool we use is a (5)meter stick

9. Length
A meter stick contains (7) 100 cm and mm.

10. 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

11. Mass (10) Triple beam balance: that’s what we use in this school.
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

12. Triple Beam Balance
Spring Scale
Electronic balance

13. Liquids
When 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

14. Liquids
There 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.

15. Pipette
Beaker
Flask
Graduated Cylinder

16. Volume Volume = length x width x height Tool: (16)meter stick
Units: meters cube (m3)
Volume = length x width x height
length
width
height

17. Temperature
The when we measure temperature the unit we measure it in is degrees (18)Celsius
The tool we always use is a (17)thermometer

18. Guided Practice: Test Questions
Which of the following can NOT be used to measure volume? A. Balances C. Pipettes B. Beakers D. Graduated cylinders

19. 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

20. 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

21. Independent Practice
Using 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