68 69 PE vs KE Potential and Kinetic Energy Task 1: Get two post-it notes and place side by side on...
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Transcript of 68 69 PE vs KE Potential and Kinetic Energy Task 1: Get two post-it notes and place side by side on...
68 69PE vs KE
Potential and Kinetic Energy
Task 1:Get two post-it notes and place side by side on the top half of page. Label
one potential energy and one kinetic energy
Task 2:Glue the graphic organizer on the bottom of the page
Motion and Machines
VIDEO – Potential/Kinetic Energy
Take notes under your post-its from the video
Potential Energy
Energy not in use Depends on height (off the ground)
and weight Objects that are still (not moving)
Which ball has more potential energy?
Green = go to the left side of room Blue = go to the right side of room
Kinetic Energy
Energy in motion or in use Depends on mass and speed Moving object(s)
Where will the roller coaster car have the most kinetic energy?
Think – Pair – Share
Tell the person next to you the difference between POTENTIAL ENERGY and
KINETIC ENERGY.
Activity
Use the card provided, to find your energy match. Then sit together.
Complete the card sort on your table – grouping the pictures as either potential
energy or kinetic energy.
68 69PE vs KE
Potential and Kinetic Energy
Task 1:Get two post-it notes and place side by side on the top half of page. Label
one potential energy and one kinetic energy
Task 2:Glue the graphic organizer on the bottom of the page
Task 3: Using the word provided, illustrate the
word you received showing that object with both potential and kinetic
energy.
Use at least 4 colors
Exit Ticket: answer the following question and explain your reasoning
Which statement best describes the energy changes that occur while a child is riding on a sled down a steep, snow – covered hill?
a. Kinetic energy decreases and potential energy increases.b. Kinetic energy increases and potential energy decreases.c. Both potential energy and kinetic energy decrease.d. Both potential energy and kinetic energy increase.
Choose an answer and explain your thinking.
Exit Ticket
58 59
Set up page 39 and log in to explorelearning.com
Speed = Distance/Time
Forward
Backwards
Stop
Speed
Gizmo – Distance and Time Graphs
70 71Change in Motion
Speed = Distance/Time
Complete each scenario by graphing the story and
answer the question.
Check answers with the teacher.
Forward
Backwards
Stop
Speed
Glue story here
74 75Graphing QR Code
Graphing Motion
Using excel/numbers, create a speed graph that
has:•At least 5 points
•At least 3 movements – forward, rest/stop,
backward
Create a QR code for your graph and glue on this
page
Task 1: Match the graph with the story.
Task 2: CompleteGRAPH PRACTICE1
Check answers with teacher and receive stamp.
When completed, glue on this page.
http://goqr.me/
76 77Graphing Motion Pt.2
1 2
3 4
5 6
Motion Bulletin Board
Task 1: Draw this chart.
Task 2: Scan 6 different QR codes and describe their graph in the box by writing a short story.
Task 3:
Create a bulletin board that represents SPEED using what you have learned during this
unit.
Use at least 4 colors
78 79Calculating Average SpeedHurry, Hurry HW
Task 1: copy the table and take notes as we watch each video on Average Speed
Task 2: Glue Helicopter Motion on the bottom of the page
1 2
3 4
Notes: Calculating Average Speed
Video 1: Describing Motion
Video 2: How to Calculate Average Speed
Video 3: How to Read Distance-Time Graphs
Video 4: Reading Graphs to Calculate Average Speed
Let’s Practice!On white boards, figure out the answer.
When I say show me, hold up your answer.
What is the speed at point B? .5 m/s
E
D
CB
A
What is the speed at point D? .67 m/s
E
D
CB
A
What is the average speed between points C and D?
1.5 m/s
E
D
CB
A
What is the average speed between points A and C?
.25 m/s
E
D
CB
A
What is the average speed of this trip (A to E)?
.8 m/s
E
D
CB
A
Helicopter MotionUse 1 post-it per question (# each post-it). Show work and explain how you got
the answer. Show me your work in order to get the left side assignment.
1. What is the speed of the helicopter at 2 seconds?
2. What is the total distance this helicopter travelled?
3. What is the total time this helicopter was in motion?
4. What is the average speed of the helicopter between 4
and 7 seconds?
5. What is the average speed of the helicopter on this trip?
78 79Calculating Average SpeedHelicopter Motion
Task 1: copy the table above
1 2
3 4
Task 2: Glue in Helicopter Motion on top half of paper
82 81Simple MachinesSimple Machines @Work
Task 1: Glue Cornell notes to this page.
Task 2: Take notes on simple machines
Simple MachinesSimple Machines
Suppose you needed to put together a dresser. Which simple machines might you use?
Let’s take a closer look at simple machines!
IntroductionIntroduction
Simple machines are tools that make work easier
Simple machines are machines with few or no moving parts.– Compound Machine- a machine that uses two or
more simple machines.
You are doing the same amount of work — it just seems easier
Kinds of Simple MachinesKinds of Simple Machines
What is a Lever?What is a Lever?
A lever is a board or bar that rests on a turning point
Most common simple machine because just about anything that has a handle on it has a lever attached
What is a Wedge?
A wedge is a simple machine used to push two objects apart
A wedge is usually made up of two inclined planes
These planes meet and form a sharp edge. This edge can split or push objects apart
An ax is a wedge that splits wood.
What is a Screw?
An inclined plane that winds around itself a wedge at the tip
A screw has ridges and is not smooth like a nail
Some screws are used to lower and raise things
A screw is a simple machine used to hold objects together.
What is a Wheel and Axle?
A wheel and axle is a simple machine made of a rod attached to the center of a wheel.
The axle is a rod that goes through the wheel. This lets the wheel turn.
The axle, or rod, turns when you put force on the wheel.
You probably have seen a wheel and axle on scooters, cars, roller skates, and wagons.
What is an Inclined Plane?
A ramp is an inclined plane. A flat surface that is higher on one end -
slanting surface connecting a lower level to a higher level.
You can use this machine to move an object to a lower or higher place.
What is a Pulley?
Instead of an axle, the wheel could also rotate a rope or cord. This variation of the wheel and axle is the pulley
In a pulley, a cord wraps around a wheel As the wheel rotates, the cord moves in
either direction lifting a load You can use a pulley to move a load up,
down or sideways.
Two Types of Pulleys
Fixed pulleys are attached to the building and do not move Ex. Flag Pole
Moveable pulleys are attached to the object that is being lifted.
Summary: Why are simple machines important?
Simple machines are important to us in our daily life.
They help us do work. They make our lives easier.
82 81Simple MachinesSimple Machines @Work
Task 3:
Find examples of each type of simple
machine. Create a collage of your
images.
Use pic collage app or magazine/internet
pictures.
Label each picture
Task 1: Glue Cornell notes to this page.
Task 2: Take notes on simple machines
82 83Ants on a SlantAcrostic
INCLINED
PLANE
Glue Gizmo notes to this page.
Log into www.explorelearning.com
84 85PulleysRERUN - Pulley
Glue Cornell notes to this page.
Pulleys
Single Pulley:Single Pulley:
•A single pulley reverses the direction of a force•With one pulley, the force you must pull with is the same as the weight of the object.•In order to raise the object a height of 1 meter, you must pull the rope 1 meter
Trade-off: the end of the rope must move a greater distance than the load
Compound Pulley Compound Pulley (combination)(combination):
•Two or more pulleys connected together• Allow a heavy load to be lifted with less force•Effort needed to lift the load is less than half the weight of the load
Trade-off: you need more rope and you need to pull more rope!
Fixed Pulley:Fixed Pulley:
•The fixed pulley is attached to an unmovable object like a ceiling or wall•May be single or combination•Doesn't change position•Makes work easier by changing the direction of the applied force•The force required to lift the load remains the same as lifting it without the pulley
Movable PulleyMovable Pulley:
• A pulley that moves with the load (both the load and the pulley move)
• The load moves in the same direction as the applied force
• The movable pulley allows the effort to be less than the weight of the load
• It takes less force to raise an object than if you used only your hands
• The amount of force required depends on the number of supporting ropes
• The greater the number of pulleys and supporting ropes, the smaller the force required.
http://www.swe.org/iac/LP/pulley_03.html
In the second picture, the weight is held by two ropes instead of one. That means the weight is split equally between the
two ropes, so each one holds only half the weight.
Pulleys are used to gain mechanical advantage trading the amount of rope you have to pull to lift an object for how heavy the object can be.
http://www.swe.org/iac/LP/pulley_03.html
The more lines of support (ropes) a pulley has, the more mechanical advantage it has!
Pulley Lab
With your table, complete the pulley lab on your table. Be careful with the equiptment.
Follow any safety rules that apply.
84 85PulleysRERUN - Pulley
RERUN
Glue Cornell notes to this page.
How do pulley’s make work easier?
85 87Gizmo - PulleysPulley Postcard
Glue Gizmo notes to this page.
Log into www.explorelearning.com
You are a pulley. Write a post card to any object
explaining why you should be together.
Include:•At least 4 colors
•Image related to topic•3 facts about pulleys