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