Measurement is a description of an object using numbers and units Units in the US (for example: inches, gallons, and Fahrenheit) are different from units used by scientists Scientists use the metric system also known as the International System of Units (SI for short) The SI system is used by scientists for consistency Degrees Celsius or Kelvin Meters Liters Grams Complete Part 1 on your worksheet now. Answers: 1. C 2. B 3. D 4. A In order for scientists to perform measurements we use tools. What are some tools used by scientists for measurement? ◦ ◦ ◦ ◦ ◦ ◦ Rulers Balances Graduated cylinders Beakers Thermometers Droppers Complete Part 2 on your worksheet now Answers: 1. D 2. E 3. C 4. A 5. B 6. F Complete Parts 3 and 4 on your worksheet now Answers Part 3: 1. A 2. B 3. C 4. C 5. B 6. D Answers Part 4: 1. A 2. B 4. C 5. B 6. D 3.C Some important things to note: ◦ During labs it is important to listen and follow all directions both verbal and written ◦ There should be no fooling around when lab equipment is involved ◦ The safety contract must be followed at all times AND must be signed before you will be allowed to complete any lab experiments tomorrow. ◦ Let’s go over the safety contract now. Please complete Part 5 of your handout now. Answers: 1a. Carry the microscope from underneath and on the neck. 1b. Do not eat using laboratory equipment and do not eat in the lab 1c. Wear safety gear, keep lab area clear, point test tube away from students. Part 6 is your HW tonight.