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.