1. Nov. 6, 2017 You need: Clean paper / pencil Motion notes
3rd pd: HW vocabulary 4x4
Warm Up for exchange
Warm Up:
4,152 cm = ______________ dkm
Explain your process.
I CAN: measure distance and time to calculate speed.
I CAN: illustrate speed patterns through graphs.
Today we review metrics quickly – and then go back to MOTION. On Friday we did a little “inquiry” about spheres – and how to describe them. The goal was to work on truly describing the motion – and then whittling it down to description of the motion.

2. Practice these together
1.) 103 km = __________ dm
2.) hm = __________ km
3.) mm = _______ cm

3. Practice these on your own (show the decimal movement)
1.) 10 Dkm = ________ dm
2.) Hm = ________ cm
3.) m = ________ km
4.) km = _______ m
5.) km = _________ mm
6.) Dkm = __________ mm
7.) 98 dm = ________ Dkm
8.) 325 mm = __________ cm

4. Metrics
Consistent words…METER, LITER, GRAM
How big is a meter?

5. Conversion in the METRIC system…
NAME!
RIGHT
Kilo
Hecto km
Deka hm
dkm
deci
LEFT
centi
Meter
Liter
Gram dm
milli cm mm

6. How can we describe motion?
Motion can be described by:
DISTANCE (how far did it travel?)
TIME (how long did it travel?)
SPEED (how fast did it travel?)
DIRECTION (which way did it go?)
ACCELERATION (does the motion change?)

7. The binder clip will be set at 10 cm – so the ramp is at 10 cm.
An index card to indicate the movement.
Binder clip – to steady the ramp
To mark a place for the ramp AND a start for the index card.
End point – to be measured for distance.

8. What did you observe?
What did you measure?
What happens if you change the ramp?

9. How can we describe motion?
Motion can be described by:
DISTANCE (how far did it travel?)
TIME (how long did it travel?)
SPEED (how fast did it travel?)
DIRECTION (which way did it go?)
ACCELERATION (does the motion change?)

10. In math terms… Distance Speed = Time
A “change in position over time” is the same as saying:
Distance
Speed =
Time

11. Speed = d
Distance
Time s t

12. D S T Speed = Distance Time Time = Distance Speed
Distance = Speed x Time D S T

13. Let’s practice calculating speed
If you travel 100 km in 2 hours, what is your speed?
Speed = Distance
Time
Distance = 100 km Time = 2 hours
Speed = 100 km
2 h
Speed = 50 km/h

14. Speed Practice Problems
A family takes a car trip heading northeast from Durham, NC to Washington, DC. They travel for hours and cover 360 km.
What was their average speed?
Speed = Distance
Time
= 360 km
4 h
= 90 km/h

16. Speed vs. Velocity
SPEED – tells you have fast or slow something is moving (changing position).
Example = 25 km/h
VELOCITY – tells you speed AND DIRECTION! (changing position in a certain direction)
Example = 25 km/h EAST

17. Speed Practice Problems
A family takes a car trip heading northeast from Durham, NC to Washington, DC. Their speed was 90 km/h. What was their VELOCITY?
Velocity is SPEED and DIRECTION!
Velocity = 90 km/h NORTHEAST

18. What was the average speed of the runner in the first 5 seconds of the race?
Speed = 25 m s
Speed = 5 m/s

19. SLOW MOVEMENT

20. FAST MOVEMENT

21. FAST vs. SLOW
FAST
SLOW

22. Starting & Stopping

23. No Motion

24. Speeding Up
Slowing down

25. Motion Foldable Motion Review Label the bottom of each flap as shown.
Draw / decorate your top flap with the foldable’s title.
By John Smith

26. Motion Foldable
4. Repeat for constant motion, different speeds (draw two lines on the same graph), and acceleration (speeding up and slowing down).
3. For “No motion,” label the graph axes and draw in the line that would result from a STOPPED object. Describe it in words.

27. Check your work!
Acceleration
Different
Speeds
Constant
Motion

28. Motion Foldable
4. Write in the formula for speed and some example units.
5. Write in the definition for velocity and one example.
distance
time
Speed =
Example units: m/s, Km/h
Velocity: Speed + Direction (ex. 25 m/s East).

29. Motion Foldable
6. Write in the formula for acceleration and some example units.
7. Write down the three ways that an object can accelerate.
distance
time
Speed =
Example units: m/s, Km/h
Velocity: Speed + Direction (ex. 25 m/s East).
Acc. =
Final speed – Start speed
Time
Example units: m/s2, Km/h2
Objects accelerate by:
Speeding up
Slowing down
Changing direction