Monday, September 8Monday, September 8thth Entry TaskEntry Task

Describe WHERE Safeway Describe WHERE Safeway is.is.

Schedule:Schedule:• Objects in motion Objects in motion

notes and activitynotes and activity

Objective: Objective: •I can describe an I can describe an object’s position and object’s position and motion with respect to motion with respect to a reference pointa reference point

HomeworkHomework• 10.1 RSG if not 10.1 RSG if not

finished in classfinished in class

Please have on desk:Please have on desk:• 10.1 Vocabulary10.1 Vocabulary

Possible AnswerYour description of where Safeway Your description of where Safeway will depend on what you use as a will depend on what you use as a reference point.reference point.For instance: For instance:

• Safeway is 1 mile away from here.Safeway is 1 mile away from here.• Safeway is across from Jack in the Box.Safeway is across from Jack in the Box.• Safeway is on the corner of Bridgeport Safeway is on the corner of Bridgeport

and 40and 40thth..

Reference Points help to describe Reference Points help to describe where something is and/or how to where something is and/or how to

get thereget there

10.1 Notes-10.1 Notes-An object in motion changes An object in motion changes

positionposition• PositionPosition – (of a place or object) is the – (of a place or object) is the

location of that place or objectlocation of that place or object• You can describe where something is You can describe where something is

by comparing it’s position with where by comparing it’s position with where you currently are.you currently are.

• Compare the position of something in Compare the position of something in the room with where you are sitting. the room with where you are sitting. Write this in your journal.Write this in your journal.

How do you describe a How do you describe a position?position?

• Reference PointReference Point- a location to which you - a location to which you compare other locations.compare other locations.

• You can describe the position of your house by You can describe the position of your house by using the school as a reference pointusing the school as a reference point– Mrs. Krogh’s house is 0.2 miles west of Bridgeport.Mrs. Krogh’s house is 0.2 miles west of Bridgeport.

• Describe your position in the classroom using the Describe your position in the classroom using the door as a reference point. Write this in your door as a reference point. Write this in your journal.journal.

Measuring DistanceMeasuring Distance

• The way you measure distance depends The way you measure distance depends on what you want from the information.on what you want from the information.– Sometimes you need to know the Sometimes you need to know the

straight-line distance between two straight-line distance between two positionspositions

– Sometimes you need to know the Sometimes you need to know the total length of a certain path between total length of a certain path between two positions.two positions.

• UnitsUnits– Meter Meter – Metric System Step LadderMetric System Step Ladder

Motion is a Change in PositionMotion is a Change in Position

• MotionMotion- the change of position - the change of position over time.over time.

• Give an example of some things Give an example of some things that you have seen that have that you have seen that have motion.motion.

• Describe a motion that you are Describe a motion that you are witnessing right nowwitnessing right now

Describing MotionDescribing Motion

• When you described something When you described something that you witnessed that had that you witnessed that had motion, did you describe the motion, did you describe the following things?following things?– Speed of the objectSpeed of the object– How quickly or slowly (often) the How quickly or slowly (often) the

object changes position?object changes position?

Relative MotionRelative Motion

• Have you ever sat in a parked car and had Have you ever sat in a parked car and had the car next to you back up or go forward? the car next to you back up or go forward? Did you feel like it was your car that was Did you feel like it was your car that was moving?moving?

• How an observer sees a motion depends on How an observer sees a motion depends on how it compares with his own motion.how it compares with his own motion.

• Frame of reference-location of an observerFrame of reference-location of an observer• As I walk past you. Am I moving position or As I walk past you. Am I moving position or

are you? Think about different frames of are you? Think about different frames of reference.reference.

PassportPassport

• Why does a jet airplane high in the Why does a jet airplane high in the sky look like it is moving very slowly sky look like it is moving very slowly even though it is traveling 300+ even though it is traveling 300+ mi/hr?mi/hr?

Possible AnswerPossible Answer

• When you view a plane in the air, When you view a plane in the air, there are no reference points to help there are no reference points to help you judge how fast the plane is you judge how fast the plane is traveling (or the reference points are traveling (or the reference points are so large, it is difficult to tell).so large, it is difficult to tell).

• Reference Points also help us to Reference Points also help us to judge speed and direction of motionjudge speed and direction of motion

Tuesday, September 9Tuesday, September 9thth Entry TaskEntry Task

• Explain why early Explain why early scientists assumed scientists assumed the sun revolved the sun revolved around the earth.around the earth.

• Use Vocab. from Use Vocab. from 10.110.1

Schedule:Schedule:• Speed notesSpeed notes• Speed math Speed math

HomeworkHomework• Speedy math handoutSpeedy math handout

Objective:Objective: I can explain I can explain that speed measures how that speed measures how fast position changesfast position changes

Please Have on Desk:Please Have on Desk:• 10.1 RSG, journal, and 10.1 RSG, journal, and

sharpened pencilsharpened pencil

Possible AnswerPossible Answer

• From earth’s From earth’s point of view point of view (frame of (frame of reference) it appears that the sun reference) it appears that the sun changes position changes position in the sky.in the sky.

• In reality, it is the earth spinning that In reality, it is the earth spinning that makes the sun appear as though it is makes the sun appear as though it is changing position in the sky.changing position in the sky.

• RELATIVE MOTION!RELATIVE MOTION!

Speed Diagnostic Quiz

1.List the 2 variables you must know in order to calculate the speed of an object.

2.List at least 3 units that can be used to indicate the speed of an object.

3.What tools would you need to calculate the average speed of a sprinter (Radar gun is not the correct answer)?

4.If a X-Country runner finishes a 3 mile race in 18 minutes, what is her average speed.

• List the 2 variables you must List the 2 variables you must know in order to calculate the know in order to calculate the speed of an object.speed of an object.

• DISTANCE AND TIMEDISTANCE AND TIME

List at least 3 units than can be used List at least 3 units than can be used to indicate the speed of an object.to indicate the speed of an object.

METERS/SECOND (m/s)METERS/SECOND (m/s)

MILES/HR (mi/hr) MILES/HR (mi/hr)

KILOMTERS/HR (km/hr)KILOMTERS/HR (km/hr)

FEET/YR. (Ft/yr)FEET/YR. (Ft/yr)

CENTIMETERS/DECADE CENTIMETERS/DECADE

What tools would you need to What tools would you need to calculate the average speed of calculate the average speed of a sprinter (Radar gun is not the a sprinter (Radar gun is not the correct answer)?correct answer)?

MEASURING TAPE – How far did it MEASURING TAPE – How far did it gogo

STOPWATCH – How long did it take STOPWATCH – How long did it take to get thereto get there

If a X-Country runner finishes a 3 mile If a X-Country runner finishes a 3 mile race in 18 minutes, what is her race in 18 minutes, what is her average speed.average speed.

S = D/TS = D/T

S = 3 miles/18 minutes S = 3 miles/18 minutes

S = 0.167 mi/minS = 0.167 mi/min

• Position is the location of a place or an object.

• Motion is the change in position of an object over time.

• Motion: Is measured as the distance an object travels between a beginning and an ending point.

• Time: Is measured as the time needed for an object to travel between a beginning and an ending point.

• Units:

– Distance: m or km for longer distances; cm for shorter distances.

– Time: seconds usually although it can also be hours.

• Speed is a measure of how fast something moves.

• Speed is a measure of how far something moves in a given time.

• The greater the speed an object has, the faster it changes position AND the farther it moves in a unit of time.

• To calculate speed, you need to know both distance and time measurements.

• Speed = distance S = d/t time

• The standard metric unit for speed is m/s, but are also given in km/hr.

• A wheelchair racer completes a 100-meter course in 20 seconds. What is his speed?

– What do you know? distance = 100 m time = 20 s- What do you want? speed

- Use the formula: S = 100 m = 5 m 20 s s

1. A woman runs 200 m in 25 s. What is her speed?

2. If you travel 100 m in 50 s, what is your speed?

Sometimes you are given Speed and you have to determine either a missing distance or time: what do you do?

Time is the unknown:Distance/Speed

Distance is the unknown: Time x Speed

• One way to show the motion of an object is by using a graph that plots the distance the object has traveled against time.

• This kind of graph shows how speed relates to distance and time.

• Give your graph a TITLE.• Time is on the x-axis (horizontal). Be

sure to scale properly and include your units!

• Distance is on the y-axis (vertical). Be sure to scale properly and include your units!

• The steepness (slope) of the line indicates the speed of the object!

0

50

100

150

200

250

300

0 10 20 30 40 50 60Time (seconds)

Distance (meters)

Wednesday, September 10Wednesday, September 10thth Entry TaskEntry Task

•If you travel 39 miles on the

freeway in 0.6 hours, have you

broken the speed limit of 65

mi/hr?

•Show math to prove your

answer.

Please have on desk:Please have on desk:• Speed math practice, Speed math practice,

pencil, calculatorpencil, calculator

Homework:Homework:• Re-read 10.2 carefullyRe-read 10.2 carefully

Objective:Objective: I will relate I will relate graphs, stories, and data.graphs, stories, and data.

Schedule:Schedule:• 10.2 RSG10.2 RSG• Every graph tells a storyEvery graph tells a story

Possible AnswerPossible Answer

• Your average speed of 65 mi/hr does Your average speed of 65 mi/hr does not break the speed limit, but there not break the speed limit, but there is no way to tell from the information is no way to tell from the information if you traveled over 65 mi/hr during if you traveled over 65 mi/hr during any point in the trip.any point in the trip.

• S = S = dd = = 39 miles39 miles = 65 = 65 milesmiles

t 0.6 hrs hourt 0.6 hrs hour

Every Graph Tells a StoryEvery Graph Tells a Story

1. Take out the Pink and Green cards 1. Take out the Pink and Green cards from your bagfrom your bag

2. Spread the graphs (pink) out on 2. Spread the graphs (pink) out on your table so you can see each oneyour table so you can see each one

3. Carefully read each “story” and try 3. Carefully read each “story” and try to match it with a graph that displays to match it with a graph that displays that story.that story.

4. Write the Correct Matches on your 4. Write the Correct Matches on your Data Sheet.Data Sheet.

5. Read pg 324-325 and complete 5. Read pg 324-325 and complete remainder of worksheet.remainder of worksheet.

Every Graph Tells a StoryEvery Graph Tells a Story

1. Together, write a story that matches 1. Together, write a story that matches this graph. this graph.

Thursday,Thursday, September 11September 11thth Entry Task

• Explain why velocity is Explain why velocity is different from speed. different from speed. Give an example of Give an example of each.each.

Schedule:Schedule:• Calculate Speed Calculate Speed

Activity (exit ticket)Activity (exit ticket)

Homework:Homework:• Read 10-3 carefullyRead 10-3 carefully

Objective: Objective: I can I can calculate and graph calculate and graph the speed of a moving the speed of a moving object.object.

Please Have on Desk:Please Have on Desk:• pencil, calculatorpencil, calculator

Friday, September 12Friday, September 12thth Entry TaskEntry Task

Write the formula, show Write the formula, show your work with units, and your work with units, and answer with units:answer with units:

An object is moving at a An object is moving at a speed of 19 m/s for 247 speed of 19 m/s for 247 m. How long did it take?m. How long did it take?

Schedule:Schedule:• 10.2 Quiz10.2 Quiz• Acceleration notesAcceleration notes

Objective: Objective: • I will explain the I will explain the relationship between relationship between speed and acceleration.speed and acceleration.

HomeworkHomework• Re-read 10.3 carefullyRe-read 10.3 carefully

Please have on Desk:Please have on Desk:• Speed activitySpeed activity• Science journal and Science journal and

sharpened pencilsharpened pencil