Classroom PPT
Focus: Describing Motion
October
th
5
– October
th
9
, 2015
8th Grade Physical Science
Clermont Middle School
Mrs. Miret
601 COMPUTER LAB ACCESS/TUTORING
is available for you on
WEDNESDAYS 8:30 – 9:15 a.m.
What can we do when we come?
PENDALEARNING
REPORTS
RESEARCH
ONLINE ACCESS TO SCHOOL WEBSITE
BELLRINGERS 10/05 to 10/09, 2015
Create a bellringer page in your INB. You will turn this in on Friday
Write the question answer the question in complete sentences.
10/5 /15 – How would you describe or define motion?
See page 15
10/6/15 – How can you describe an objects position?
See page 11
10/7/15 – Why is it important to have a reference point?
See page 11 - 13
10/8/15 – Describing Position in Two Dimensions. What does this mean?
See page 14
10/9/12 – What is the difference between constant speed and
instantaneous speed?
HOMEWORK
The week of 10/5 – 10/9/2015
1. Complete unfinished classwork
2. Update your INB
3. Reminder: INB will be collected on
10/9/2015
4. PENDALEARNING assignments due 10/9.
• In Pursuit of Scientific Explanation
• Introducing Forces
• Changes in Scientific Knowledge
10/05/2015
ACTIVITY #13 Introduction to Describing Motion
1. Go get your textbook
2. Read page 11 – 15 silently.
3. ACTIVITY #13: Define all chapter 1 vocabulary. The 10
words highlighted in yellow. They are on pages 11 – 29
(Reference point, position, motion, displacement, speed,
constant speed, instantaneous speed, average speed,
velocity, and acceleration.) See next slide for definitions
4. Start the crossword puzzle on page 27. Use your vocabulary
definitions to help you complete this crossword. When
completed, this will be turned in for credit.
MOTION Vocabulary found on page 11 - 29
1.
REFERENCE POINT: The starting point you choose to describe the location, or
position, of an object.
2.
3.
4.
POSITION: An object’s distance and direction from a reference point.
MOTION: The process of changing position.
DISPLACEMENT: The difference between the initial (first) position and the final
position of an object.
5. SPEED: A measure of the distance an object travels per unit of time.
6. CONSTANT SPEED: The rate of change of position in which the same distance is
traveled each second.
7. INSTANTANEOUS SPEED: Speed at a specific instant in time.
8. AVERAGE SPEED: The total distance traveled divided by the total time taken to
travel that distance.
9. VELOCITY: The speed and the direction of a moving object.
10.ACCELERATION: A measure of the change in velocity during a period of time.
10/6/2015 Changes in Velocity
EQ: What does a speed-time graph indicate
about an object’s motion?
Write and answer your bellringer on this weeks bellringer page in your INB.
• Go and get your textbook.
•10/6 BELLRINGER: How can you
describe an objects position?
• Answer: Position is an object’s distance and direction
from a reference point.
• See page 11
10/6/15 Changes in Velocity -Continued
CLASSWORK
Activity #14 Speed, Time, and Distance Graphs
Go to page 32-34 in your textbook.
Copy the graphs pictured on those pages
(figures 14, 15, 16, 17, and 18)
The distance-time graphs are the yellow boxes with red lines.
Make sure to add the labels shown on each graph.
Add the descriptions written below the graphs.
10/7/2015 BELLRINGER
Why is it important to have a
reference point?
Answer: Without a reference point you cannot describe the
location, or position, of an object.
See page 11 - 13
10/ 6 and 7 /2015
Activity #15 Describing Motion / Graphic Organizer
1. Go to p 37 in your textbook.
2.Copy and complete the graphic organizer using
the vocabulary list/definitions we completed on
10/5 Activity #13: Motion Vocabulary p 11-29
3. When completed, add the organizer to your INB as
Activity #15: Describing Motion/Graphic
Organizer.
10/7 ACTIVITY #16: Four Types of Speed -Time Graphs p32-34
(2nd/3rd/4th/and 6th Period Tree Map) ( 5th Period: Four Panel Foldable)
Types of Speed - Time Graphs
Object at Rest
Constant Speed
AN OBJECT AT REST
IS NOT MOVING. ITS
SPEED IS NOT
CHANGING OVER TIME.
AN OBJECT GOING
AT A CONSTANT SPEED
IS NOT CHANGING OVER
TIME.
AN OBJECT THAT IS
SPEEDING UP IS
INCREASING SPEED
OVER TIME.
AN OBJECT THAT
IS SLOWING DOWN
IS DECREASING
SPEED OVER TIME.
ITS SPEED IS ALWAYS
ZERO.
THE SPEED IS ALWAYS
THE SAME.
THE SPEED-TIME GRAPH
FOR AN OBJECT AT REST
IS A HORIZONTAL LINE.
(figure 14 on page 32)
FOR AN OBJECT MOVING
AT A CONSTANT SPEED,
THE SPEED-TIME GRAPH
IS A HORIZONTAL LINE.
(figure 15 on page 33)
THE LINE ON THE
SPEED-TIME GRAPH
IS CLOSER TO THE
x-axis AT THE
BEGINNING OF THE
TIME PERIOD WHEN
THE SPEED IS LOWER.
IT SLANTS UPWARD
TOWARD THE RIGHT
SIDE OF THE GRAPH AS
SPEED INCREASES.
(figure 16 on page 33)
AS SPEED DECREASES
THE POINTS REPRESENTING ITS SPEED ARE
CLOSER TO THE x-axis,
THE SPEED IS ZERO
WHEN THE OBJECT
STOPS.
(figure 17 on page 34)
Speeding Up
Slowing Down
OBJECT AT REST
• AN OBJECT AT REST IS NOT MOVING.
• ITS SPEED IS NOT CHANGING OVER TIME.
• ITS SPEED IS ALWAYS ZERO.
• THE SPEED-TIME GRAPH FOR AN OBJECT AT REST IS A
HORIZONTAL LINE.
• (figure 14 on page 32 on the right side)
CONSTANT SPEED
• AN OBJECT GOING AT A CONSTANT SPEED IS NOT CHANGING
SPEED OVER TIME.
• THE SPEED IS ALWAYS THE SAME.
• FOR AN OBJECT MOVING AT A CONSTANT SPEED,THE SPEEDTIME GRAPH IS A HORIZONTAL LINE.
• (figure 15 on page 33 on the right side)
SPEEDING UP
• AN OBJECT THAT IS SPEEDING UP IS INCREASING SPEED
OVER TIME.
• THE LINE ON THE SPEED-TIME GRAPH IS CLOSER TO THE xaxis AT THE BEGINNING OF THE TIME PERIOD WHEN THE
SPEED IS LOWER. IT SLANTS UPWARD TOWARD THE RIGHT
SIDE OF THE GRAPH AS SPEED INCREASES.
• (figure 16 on page 33 on the right side)
SLOWING DOWN
• AN OBJECT THAT IS SLOWING DOWN IS DECREASING SPEED
OVER TIME.
• AS SPEED DECREASES, THE POINTS REPRESENTING ITS
SPEED ARE CLOSER TO THE x-axis, THE SPEED IS ZERO WHEN
THE OBJECT STOPS.
• (figure 17 on page 34 on the right side)
10/8 BELLRINGER
Describing Position in Two Dimensions.
What does this mean?
See page 14
Answer:
•
•
•
First, choose a reference point. (from Clermont Middle)
Next, specify a reference direction (north, south…)
Then, determine the distance along each reference direction. ( 2 miles east and
five miles north of Clermont Middle)
10/8 ACTIVITY #17
Ways an Object can Accelerate
EQ: What is the difference between constant
and changing speed?
Constant Speed
Changing Speed
Traveling the same (or Traveling different (or
constant) distance per changing) distances per
second.
second.
The relationship between
ACCELERATION and VELOCITY (see p 29-30)
How does an object accelerate?
Answer: An object accelerates when velocity changes.
How does velocity change?
Answer: Velocity changes when speed, direction, or both
speed and direction change.
10/8 ACTIVITY #17 - continued
Ways an Object can Accelerate
• FRONT OF NEXT AVAILABLE PAGE:
• Title the page – “Constant and Changing Speed”
• Cut out figure 6 on page 20.
• Glue figure 6 on your next available INB page.
• BACK OF SAME PAGE:
• Title this backside of the page – “Ways an Object can Accelerate”
• Cut out figure 13 on page 30.
• Glue figure 13 on this side of the same page.
10/8 How can velocity change?
EQ: What are three ways velocity
can change?
ANSWER:
Velocity changes when 1.Speed changes
2.Direction changes
or
3. Both speed and direction change
I AM OBJECT AT REST:
Not moving
How fast
is that
object
going?
I AM AN OBJECT THAT
IS SPEEDING UP:
Positive acceleration /
increasing speed
I AM AN OBJECT THAT IS
SLOWING DOWN:
Negative acceleration or
deceleration / decreasing speed
I AM AN OBJECT THAT IS
GOING AT A CONSTANT
SPEED:
Speed stays the same but
object is in motion.
10/09/15 TURN IN YOUR INB / INB CHECK #2
You must have an updated Table of Contents that includes:
•
Activity 8 Galileo / Graphic Organizer
•
Activity 9 Scientific Problem Solving
•
Activity 10 Measurement and Scientific Tools
•
Activity 11 Scientific Theory vs Scientific Law
•
Activity 12 Repetition vs Replication
•
Activity 13 Motion Vocabulary (p 11-29)
•
Activity 14 Speed, Time, Distance Graphs (p 31-34)
•
Activity 15 Describing Motion / Graphic Organizer (p 37)
•
Activity 16 Types of Speed – Tree Map (variation)
10/9 BELLRINGER
What is the difference between
constant speed and
instantaneous speed?
ANSWER:
•Constant Speed: Same distance traveled per
second. (Speed stays the same)
•Instantaneous Speed: Speed at a specific
instant in time.
10/9 Measure It / Video
Played via Safari Montage
Modern Marvels: MEASURE IT
Season 15 / Episode 40