1. Nov. 16, 2018
You need:
-Clean paper (2) / pencil
-Intro to Forces WS
-Christy/Joey graphs
Warm Up:
Convert the following:
3.417km = _______ dkm
72.79 dm = _______ hm
Show work
I CAN: identify balanced and unbalanced forces.

2. November 2018 Force/Motion Force/Motion Force/Motion Force/Motion

3. December 2018 Force/Motion Force/Motion Force/Motion Force/Motion
Weather
Weather
Weather
Weather
Weather

4. January 2019 Tchr Wkdy Weather Weather Weather Weather Weather
ELA/Ma Benchmarks
NCFE Science Testing
End Qtr?
ELA/Math benchmarks will likely be the first week back from holiday. Although it won’t take the whole time, we may likely have an altered schedule. NCFE can happen at any point in the last five days – but it was the beginning of that week last year (Jan.2018).
Tchr Wkdy

5. https://phet. colorado
Skate Park lab

6. Energy Energy is what makes things move or change. What do you know?
What do you think?
Energy is what makes things move or change.
1. Ask students to share examples of energy and to explain what they think about it. Accept all answers without correction. 2. Hold a book a few feet above a table, as still as possible. Ask the class if the book has energy? Again, accept all answers. Drop the book and repeat the question. 3. Introduce a working definition of energy: “Energy is what makes things move or change.” Explain that we will explore energy during the next several activities.

7. Energy What do you know? What do you think?
Knowing types – and fitting them into the Potential or Kinetic category
Solar energy – for us and for plant life which feeds animals/people

8. Energy What do you know? What do you think?
Coal, oil, natural gas – fossil fuels

9. Let’s hypothesize

10. What patterns do we see? Why?
Potential Energy
As you lift the marble up (to the top of the ramp), you are doing work – against the force of gravity. The work done is stored in a form of energy known as POTENTIAL ENERGY. Also thought of as “Energy of Position”

11. Does Potential Energy stay as Potential?
Kinetic Energy
As the marble starts to move, potential energy now becomes KINETIC ENERGY or “energy of motion”

12. Potential Energy
Kinetic Energy

13. 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?)
VELOCITY (speed + direction)
ACCELERATION (does the motion change?)

14. Instantaneous speed
Speed at a given point in time…at a particular INSTANCE.
Example:
Driving the car and you look down at the speedometer.
Driving home and the “speed” at a stop sign.

15. Average speed
Total distance traveled divided by the total time. So you are finding the AVERAGE or OVERALL
Example:
As you drive home, you stop at stop signs/redlights. You go faster on straight paths.
Taking a road trip. It may last 4 hours – but you are not at the same speed for the entire time.

16. Constant speed
Speed that does not vary or change. It is CONSTANT or STEADY.
Example:
Putting your car on cruise control (to maintain a steady speed).
Remember that the opposite of constant is changing or VARIABLE.

17. FAST vs. SLOW
FAST
SLOW

18. No Motion

19. Leg 1
It took Phil 15 minutes to walk to his favorite breakfast spot, 2 km from his house.
It took Phil 2 minutes to walk to his favorite breakfast spot, 10 km from his house.
It took Phil 10 minutes to walk to his favorite breakfast spot, 10 km from his house.
It took Phil 15 minutes to walk to his favorite breakfast spot, 2.5 km from his house.

20. Leg 2
The restaurant was closed, so he went to the store located 15 km away. It took Phil 35 min to get there.
He spent 30 minutes at the restaurant ordering take-out food.
The restaurant was closed, so he ran up the hill and arrived at the next store 0.5 km away in 10 minutes.
The restaurant was closed, so he went 15 minutes to the store, located 0.5 km at the bottom of a hill.

21. Leg 3
The lines were long at the store, so he spent 30 minutes there.
The lines were long at the store, so he spent 60 minutes there.
When he finished, he walked down the 0.5-km hill in 10 minutes.
When he finished, he walked home in 15 minutes.

22. Leg 4
After buying his food, he ran up the 0.5-km hill in 70 minutes.
After buying his food, he returned home in 15 minutes.
He bought ice cream, so he tried to hurry. He ran down the 0.5-km hill in 15 minutes.
He bought ice cream, so he tried to hurry. He ran up the 0.5-km hill in 10 minutes.

23. Leg 5
From the top of the hill, he walked 3 km for 15 minutes.
From the bottom of the hill, it took him 85 minutes to get home.
From the top of the hill, it took him 10 minutes to get home.
He ate his meal at home in an hour.

24. Christy wanted to visit the zoo, which is 20 kilometers from her house
Christy wanted to visit the zoo, which is 20 kilometers from her house.  To help her get there, her mother drove her to the bus stop 5 kilometers away from home and toward the zoo.  The trip took 5 minutes.  She had to wait for the bus for 5 minutes.  Christy was reading on the bus and missed her stop.  She finally got off the bus 10 minutes later at the next stop 1 kilometer past the zoo.  It took Christy 15 minutes to walk back to the zoo.

25. What do you know about force?
What do you need to know to describe a force?
What happens if forces are both acting on the same thing?
CIBL kit

26. Let’s try something You have a rope – find the middle color.
Drape it across the desks to a table partner across from you.
Write out the goal:
GOAL = Each of you will need to pull on the rope in such a way as to make sure the middle does NOT move.
EXPLAIN = How did you do it?
CIBL kit

27. Let’s try again Same scenario.
Drape it across the desks to a table partner across from you.
Write out the GOAL:
GOAL = Each of you will need to pull on the rope in such a way as to make sure the middle does move toward ONE of the pair.
EXPLAIN = How did you do it?
CIBL kit

28. What would you call that?
If it doesn’t move?
If it does move?
Sketch an example of each onto your paper.
Give two examples of balanced forces and two examples of unbalanced forces.

29. Introduction to
FORCES

30. A FORCE is a PUSH or PULL in a particular DIRECTION.
FORCES
When you ride a bike, your foot PUSHES against the pedal. The push makes the wheels of the bike move.
When you drop something, it is PULLED to the ground by gravity.
A FORCE is a PUSH or PULL in a particular DIRECTION.

31. FORCES FORCES AFFECT HOW OBJECTS MOVE.
Forces can affect motion in the following ways: They can make objects:
START MOVING
MOVE FASTER
MOVE SLOWER
STOP MOVING
CHANGE DIRECTION
CHANGE SHAPE
BIG SCIENCE IDEA

32. FORCES
Identify each picture as a PUSH or a PULL. Is the force causing a change in speed or direction or both?

33. Forces cause ACCELERATION.
Since forces cause changes in SPEED or DIRECTION of an object, we can say that forces change VELOCITY, so….
Forces cause ACCELERATION.

34. FORCES 1) Strength of the Forces 2) Direction of the Forces
More than one force can act on an object at one time. What happens to the object when forces act depends on 2 things:
1) Strength of the Forces
2) Direction of the Forces

35. FORCES Forces may WORK TOGETHER or OPPOSE each other.
When 2 or more forces act on an object, the forces combine to form a net force.
Forces may WORK TOGETHER
or OPPOSE each other.

36. FORCES
If the forces cancel each other out, and do not cause the object to move, the forces are said to be BALANCED.
If the forces don’t cancel each other out – 1 force is stronger than the others – the forces are UNBALANCED and will cause a CHANGE IN MOTION.

37. MEASURING FORCE Spring Scale
The strength of a force is measured in NEWTONS.
The symbol is (N).
We use a MYSTERY TOOL to measure force.
Spring Scale

38. MEASURING FORCE Always “zero” your balance before use.
Pull gently and with constant force.
Practice using your mystery tool to drag items across your desk.

39. Try on your own!
Take off a shoe (one per partnership) – keep your socks ON!!
Use the “mystery tool” to push or pull the shoe across the table.
Flip the shoe so that the laces are down and try again.
Write your observations!

40. Shoe lab
Record the amount of force at the moment the shoe first moves!
Record your data!

42. COMBINING FORCES = 5 N right + 10 N right 5 N right
Two forces in the same direction can add together to produce a larger net force.
5 N
right + =
10 N
right
5 N
right

43. COMBINING FORCES = 5 N right - 5 N left 10 N left
Two forces in opposite directions can subtract to produce a smaller net force in the direction of the larger force.
5 N right - =
5 N left
10 N left

44. COMBINING FORCES 0 N = - 5 N right 5 N left
Two forces may cancel each other out (if equal and opposite) to produce NO NET FORCE.
5 N right
5 N left - =
0 N
(No Net Force)

45. Circle the best answer:
The forces shown above are PUSHING / PULLING forces.
The forces shown above are WORKING TOGETHER / OPPOSITE FORCES.
The forces shown above are EQUAL / NOT EQUAL.
The forces DO / DO NOT balance each other.
The net force is N TO THE RIGHT / N TO THE LEFT / ZERO.
There IS / IS NO motion.

46. Circle the best answer:
7) The forces shown are PULLING / PUSHING forces.
8) The forces shown are WORKING TOGETHER / OPPOSITE FORCES.
9) The forces shown are EQUAL / NOT EQUAL.
10) The forces DO / DO NOT balance each other.
11) The stronger force is pulling RIGHT / LEFT.
12) Motion is the to the RIGHT / LEFT.

47. 50 N
NET FORCE
200 N
150 N
Two movers are trying to move a heavy box. One mover pushes to the right with a force of 150 N. The other mover pushes to the left with a force of 200 N.
a) Draw & label the forces on the diagram.
b) What is the net force? N LEFT
c) Will the box move? YES
d) If yes, in what direction? LEFT

48. 14) Two movers are trying to move a heavy chair
14) Two movers are trying to move a heavy chair. One mover PULLS to the left with a force of 200 N. The other mover PUSHES to the left with a force of 200 N.
a) Draw & label the forces on the diagram.
b) What is the net force?
400 N LEFT
c) Will the chair move?
YES
d) If yes, in what direction?
LEFT
400 N NET FORCE
200 N
200 N

49. MIKE
Four children are fighting over the same toy. Mike is pulling North with a 50 N force, Justin is pulling East with a 40 N force, Chantal is pulling South with a 50 N force, and Tykera is pulling West a 30 N force.
a) Draw & label the forces on the diagram.
b) Is there a net force on the toy?
YES = 10 N EAST
c) In which direction will the toy move?
EAST
d) Who gets the toy?
JUSTIN
50 N
TYKERA
JUSTIN
30 N
40 N
50 N
10 N
Net Force
CHANTAL