Post on 27-Dec-2015
transcript
Bell Starter(Day 6 T 9/7 / W9/8)
Turn in WB 8—”Force Practice”IN: ON NOTE CARD (name on back): copy and answer (use GUESS):“If the mass of the crate is 50 kg with a pulling force of 300 N, what is the acceleration of the crate?”Will be returned and pasted in IN section
Today’s Agenda PLAN Go over IN Laboratory & Graphing Skills Bell Starter: Newton’s 2nd Law (GUESS) Laboratory & Graphing Skills (SO 3
&4) Review Lab Data: “Determining the
Relationship Between Force, Mass, and Acceleration”
Complete Lab Analysis Work Time: Complete all Unit 1
Assignments
Welcome Back
Please remember to turn off your cell phones and other electronic devices
Cares, Concerns & CelebrationsRAPTOR VICTORIES THE R espect
A chievement P ride T eamwork O pportunity R esponsibility WAY
Due Dates
Thursday 9/9/10 or Friday 9/10/10 : Unit 1 Assignments (HAUS
completed) Monday 9/13/10 or Tuesday 9/14/10:
Composition Notebook (graded per rubric)
Unit 1 Exam (short answer and multiple choice)
PLAN Test
25 minutes, 30 questions
Will be recorded, in PowerSchool Results will be used to assess class
placement and curriculum objectives Won’t count towards final grade Absolutely try your VERY BEST!
Review Bell Starter
NOTE CARD: INAnswer
a = 6 m/s2
Force Practice (10 pts)1. 3,200 N 2. 0.14 kg3. 1.37 m/s2
4. 115 N5. 23.1 N6. 2.08 kg7. 0.04 m/s2
8. 0.00276 m/s2
9. - 6.12 m/s2
10. 95,000 kg11. 20,000 kg12. 20,625 N13. 18,564,000 N
SO 3* Lab Report FormatList & organize information into
proper lab components. (Leave space!)
1. Purpose2. Hypothesis3. Materials4. Procedure5. Observations6. Data/calculations7. Data/calculations analysis8. Conclusions
SO 3* Lab Report FormatExplain the type of information found
in each lab report format component:1. Purpose2. Hypothesis3. Materials4. Procedure5. Observations6. Data/calculations7. Data/calculations analysis8. Conclusions
SO 4 Graphing SkillsApply scientific components to a
graph. Title* Orientation (x & y)* Author* Date* Legend/Key Scale
Line GraphBest for showing data that
changes--anything over timeMust have descriptive title at the
topLabel axes with description and
units
Line Graph
Rules on How to Make a Line Graph
Credit Ron Thompson, author of Biology: As Scientific Inquiry
**Paste in graphing rules
When placing the horizontal (x-axis) and vertical (y-axis) axis on a piece of graph paper, be sure to leave some space below the horizontal axis and to the left of the vertical axis.
indent
indent
Rules on How to Make a Graph
Credit Ron Thompson, author of Biology: As Scientific Inquiry
Always attempt to make your graph fill the entire piece of graph paper.
Rules on How to Make a Graph
Credit Ron Thompson, author of Biology: As Scientific Inquiry
Both axes must be labeled to indicate what the numbers on each axis represent. When time is involved, it goes on the x-axis. Independent Variable on x-axis Dependent Variable on y-axis
Time (seconds)
Distance
(meters)
Rules on How to Make a Graph
Credit Ron Thompson, author of Biology: As Scientific Inquiry
Each space on an axis must represent an equal change in numbers.
To set a scale: Find the range by subtracting the largest number
by the smallest number Divide the range by the number of spaces on your
axis Take your answer and round to the next highest
whole number Each space on your axis should go up by that
amount
Time (seconds) Distance (meters)
0 0
25 20
50 50
75 80
100 110
125 120
150 125
175 150
Time Distance
Range: ? # of spaces: 25
Range: ? # of spaces: 30
Time Distance
Range: 175 # of spaces: 25
175/25= 7
Range: 150 # of spaces: 30
150/30= 5
Time (seconds)
Dis
tance
(m
ete
rs)
150145140135130125120115110105100
959085807570656055504540353025201510
50
Rules on How to Make a Graph
Credit Ron Thompson, author of Biology: As Scientific Inquiry
Do not crowd numbers on an axis. This makes them hard to read. It’s not desirable to have a number on every line. Often, numbering by 5’s, 10’s or 100’s
produces the neatest and easiest to read graph.
Time (seconds)
Dis
tance
(m
ete
rs)
150
140
130
120
110
100
90
80
70
60
50
40
30
20
10
0
0 14 28 42 56 70 84 98 112 126 140 154 168 175
Rules on How to Make a Graph
Credit Ron Thompson, author of Biology: As Scientific Inquiry
Place each dot, which is defined by 2 numbers, in its appropriate place on the graph. Find x-axis data point Find y-axis data point Mark a dot
Rules on How to Make a Graph
Credit Ron Thompson, author of Biology: As Scientific Inquiry
If you are asked to draw a trend line or best-fit line, try putting a straight edge down to see if a line comes close to most of the points.
Rules on How to Make a Graph
Credit Ron Thompson, author of Biology: As Scientific Inquiry
Write a title that briefly describes the information graphed.
Include IV and DVWhat would a good title for your graph be?
Rules on How to Make a Graph
Credit Ron Thompson, author of Biology: As Scientific Inquiry
Graphs can be used to make predictions by extending the graph-line and estimating the numbers.
Graphing Notes Graphs should only start at (0,0) if
that data point was collected, you must think about if it makes sense to start at zero.
Graphing Analysis
OUT: Complete the “Graphing Analysis” questions (light yellow small handout) and paste into CB.
Review Cart Lab Data Part A: Constant Force, Changing
Mass Acceleration values?
Part B: Constant Mass, Changing Force Acceleration values?
Lab Analysis Use Laboratory and Graphing
Skills (SO 3-4) Relationship to Newton’s Second
Law
Prelab Pointers: Converting g to kg: 1000 g = 1 kg, or
1 kg/1000 g, (ex. 20 g = 0.02 kg) Converting cm to m: 100 cm = 1 m, or 1
m/100 cm, (ex. 40 cm = 0.4 m) Calculating acceleration of cart: a = 2d/t2
Where d is distance and t is time Ex. a = 2 (0.4 m)/(2.7 s)2 = 0.11 m/s2
Graph A: acceleration (y-axis) vs. mass (x axis)
Graph B: acceleration (y-axis) vs. force (x axis) Note: F = (m)(a) or F = (0.02 kg)(10 m/s2)=0.2
N; since gravitational acceleration is 9.8 m/s2 = 10 m/s2
Complete Lab Analysis Complete “Lab Analysis” Questions,
including 2 graphs using graph paper (no sketches allowed).
Due at the end of the period. Each student completes and turns in
their own work. When done, complete all Unit 1
Assignments (due next class period)
Complete Lab AnalysisGraphs: Complete Graph A and Graph B per
graphing skills (notes), no sketches allowed.
Questions: Answer questions 1 and 2 (a through
c) Answer question 3 (remember
a=F/m) Turn in when done
What’s Due Next Time? Cart Lab—Data & Analysis (graphs) Complete EPS CB (will be
collected for a grade) Complete all Unit 1
Assignments Study for Unit 1 Exam (come
with questions for review session next class period)
Bring all Unit 1 materials next class period for review session.