Science 14 Lesson Plan #7.1: Simple Machines and Work Energy

Subject: Science 14 Unit D: Energy Transfer Technologies Date: Monday March 23
Teacher: Grace Martin Time: 90 min
GLO 3: Describe and compare simple machines as devices that transfer energy and multiply forces or distances
Specific Outcome 3.2 identify the joule and the newton metre as the units of energy and work in the Système international (SI) units
Specific Outcome 3.4 describe all simple machines as having an input force, an output force and a fulcrum (e.g., pulleys, doorknobs, winches)
Specific Outcome 3.5 develop the relationship Fd, by measuring the force (F) applied to the object and the distance (d) the object is moved in the direction in which the force is applied (e.g., use a balance beam [teeter-totter] to establish equilibrium, placing differing masses at various distances)
Lesson Objectives: By the end of the lesson, students will be able to:
·  Discriminate between energy and work, using units of Nm for work
·  Understand that work is the product of force and distance
·  Have an introductory understanding of levers
Materials/Resources:
Science Connect Textbook 7.1 All Kinds of Energy and introducing 7.2 Just prying into things
Adaptations
The K&E 10-4 students are given a fill-in-the-blank note sheet to fill out as they follow along in their textbook.
Ask Chris to draw each class of lever to appeal to his graphic learning style
Lesson Procedure
• 10:10 – 10:35am Chapter 6 Test
• 10:35 – 11:00am PowerPoint Notes on 7.1 Energy, work, and simple machines
• 11:00 – 11:10am Quick Quiz based on Page 133 Check Your Understanding
• 11:10 – 11:30am Introducing levers. Use mnemonic FLE 123.
• 11:30 – 11:40am Wind-down time to chat
Formative Assessment:
Check Your Understand Quick Quiz


Science 14 and 10-4 Name:

7.1 All Kinds of Energy

Quick Quiz #5

Fill-in-the-blanks

______is the ability to do work.

Work is done when a ______moves an object with either a push or a pull.

Work can be measured in two ways. A ______(Nm) is the work done when one Newton of force is used for a distance of one meter. A ______(J) is the standard way of reporting energy and is the same as one Nm.

To find the amount of work done, multiply the ______(d) in meters that something moved by the amount of ______(F) in Newtons that it took to push/pull it.

An inclined plane is a ______because it has one movement, which is a slide.

Short Answer

1.  In which of the following situations is work being done? Why?

a.  Student lifts a stack of books from the floor to a desk

b.  Student carries a gym bag down a hallway

c.  Student walks on a treadmill or pedals a stationary bike

d.  Student does a full push-up

2.  What is the difference between energy and work?

Classify each different type of lever as a class one, two, or three.

FLE 123

1st class fulcrum in the middle

2nd class load/weight in the middle

3rd class effort/force in the middle