Identification of scientific apparatus

Best-fit line: Use a ruler to draw a straight line that (in your mind) comes closest to all the points that count. 2

Best-fit line: Use a ruler to draw a straight line that (in your mind) comes closest to all the points that count. Choose two x-values, and then read the two y-values. 3

Best-fit line: Use a ruler to draw a straight line that (in your mind) comes closest to all the points that count. Choose two x-values, and then read the two y-values. Slope is rise ÷ run 4

Best-fit line: Use a ruler to draw a straight line that (in your mind) comes closest to all the points that count. Choose two x-values, and then read the two y-values. Slope is rise ÷ run Read the y-intercept of your line Write the equation: y = slope·x + intercept 5

Lab group jobs: Runner: responsible for retrieving and returning materials Recorder: Fills out forms to be turned in Reader: reads written instructions out loud to group Checker: keeps track of which steps are done, and which are not yet complete Timer: watches the clock, helps keep group on task 6

7 Unit 1-A: Scientific Measurement (Title – white margin) Write the following LT: Learning Target Students will: Select & use appropriate tools & technology to perform tests, collect data, analyze relationships, & display data. Scientific Measurement (Write Questions AND Answers!) (p. 729) 1. Why are measurements important in science? 2. Define measuring.

8 (not in book – copy the following information) 3.a. The measurement of mass on Earth is the measurement of weight. b. Examples of mass measurement are grams & kilograms. 4. Examples of volume (liquid amount) measurement are liters & milliliters. 5.a. Examples of length are meters, centimeters, inches & feet. b. Using the centimeters side of a ruler, draw a line on your paper that is 7.5 centimeter (cm) long. Label it with its length & unit (cm).

9 6. Conversions using unit multipliers a.Mass conversions 1000 milligrams (mg) = 1 gram (g) 1000 grams (g) = 1 kilogram (kg) 454 grams (g) = 1 pound (lb) b.Volume conversions 1000 milliliters (mL) = 1 liter (L) 1 cubic centimeter (cc) = 1 milliliter (mL) 1 liter (L) = 1.06 quarts (qt) c.Length conversions 100 centimeters (cm) = 1 meter (m) 10 millimeters (mm) = 1 centimeter (cm) 2.54 centimeters (cm) = 1 inch (in) d.Time conversions

10 7. Example conversions using unit multipliers a.Mass conversions How many grams in 110 pounds? b.Volume conversions How many cubic centimeters in 3 quarts? c.Length conversions How many millimeters in 12 inches? d.Time conversions How many minutes in 4.5 days?

Measuring Volume in a Graduated Cylinder 8.a. The top of the water line in a lab measuring cylinder will form a down-sloping curve when observed from eye level.  This curved line is called the meniscus line. b. For complete accuracy, where on that curved line (the meniscus line) would you take the volume reading? A: At the bottom of the water’s curve (bottom of the meniscus line) 11

Identification of scientific apparatus