metrics & scientific method chapter1. metrics we will measure 5 things in lab 2
TRANSCRIPT
METRIC
S &
SCIENTI
FIC
METHOD
CH
AP
TE
R1
METRICS
WE WILL MEASURE5
THINGSIN LAB
2
METRICS
I. DistanceA.Measured in metersB.How long something is; same as
length (l), width (w), height (h), depth (d)
C.Area=length x widthUnits meters(m) x meters(m) =
square meters (m2)
3
Meter stick
METRICS
II. VolumeA.Measured in liters (sometimes cm3)B.How much space it takes upC.Can be measured
1. Length x width x height2. Fluid displacement
4Meter stick
Graduated cylinder
METRICS
III.MassA.Measured in gramsB.How much matter something hasC.1 cm3 water = 1 milliliter water = 1
gram waterD.1 gram = 1 paper clip
5
Electronic balance
METRICS
IV. TemperatureA.Measured in degrees CelsiusB.Measure of warmth or coldnessC.Water freezer at OoC and boils at
100oC
6
thermometer
METRICS
V. TimeA.Measured in seconds (s)B.Period during which something exists
or continues
7Stopwatch/timer
METRICS
Metric prefixes
8
kilo-(k-)
hecto-
(h-)
deka-
(D-)
meter
(m)liter (L)gram (g)
deci-
(d-)
centi-
(c-)
milli-(m-)
1000 100 10 1 0.1 0.01 0.0001
103 102 101 100 10-1 10-2 10-3
Conversion practice
SCIENTIFIC METHOD
1. State the Questiona. Write a question that asks what you
want to know
9
SCIENTIFIC METHOD
2. Collect informationa. Information may come from
observations or research.
10
SCIENTIFIC METHOD
3. Form a Hypothesisa. Make an educated guess about
what the answer to the question will be.
b. The hypothesis should be based on the information you collected.
11
SCIENTIFIC METHOD
4. Test the Hypothesisa. Perform the experiment and check
the resultsb. Control group vs. Experimental
group
12
SCIENTIFIC METHOD
5. Record and Study Dataa. The results of an experiment are
summarizedb. Tables are good for organizing datac. Graphs are good for averaging datad. Look for relationships or trends in
the data
13
SCIENTIFIC METHOD
6. Write a Conclusiona. Write a summary that compares the
hypothesis to the data and answers the question
b. It will either support or refute the hypothesis
c. Results that do not support the hypothesis may help to make a new and improved hypothesis and a new experiment
14