Forces & Motion 8 th Grade Physical Science
Forces & Motion
Jan 13, 2016
Forces & Motion. 8 th Grade Physical Science. Objectives. Forces Define Give examples Draw force diagrams. Big Ideas Unbalanced forces cause motion Newton’s laws help predict motion. Think-pair-share. What is a force? List specific examples. Types of Forces. - PowerPoint PPT Presentation
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Forces & Motion8th Grade Physical Science
Objectives
Forces Define Give examples Draw force diagrams
Big Ideas Unbalanced forces cause motion Newton’s laws help predict motion
Think-pair-share
What is a force?
List specific examples.
Types of Forces
"Types of Forces." Types of Forces. Web. 16 Apr. 2013. <http://www.physicsclassroom.com/Class/newtlaws/u2l2b.cfm>.
Types of Forces
Trefil, James S., Rita Ann. Calvo, and Kenneth Cutler. McDougal Littell Physical Science. Evanston,
IL: McDougal Littell, 2006. Print.
Force Diagram
Ristow, Kim. "Construction of Free-Body Diagrams." Construction of Free-Body Diagrams. Web. 16 Apr. 2013.
<http://www.wisc-online.com/objects/viewobject.aspx?id=tp1502>.
Force Diagram
Ristow, Kim. "Construction of Free-Body Diagrams." Construction of Free-Body Diagrams. Web. 16 Apr. 2013.
<http://www.wisc-online.com/objects/viewobject.aspx?id=tp1502>.
Think-pair-share
Forces and directions? Draw force diagram.
"Drawing Free-Body Diagrams." Drawing Free-Body Diagrams. Web. 16 Apr. 2013.
<http://www.physicsclassroom.com/Class/newtlaws/u2l2c.cfm>.
Answer
"Drawing Free-Body Diagrams." Drawing Free-Body Diagrams. Web. 16 Apr. 2013.
<http://www.physicsclassroom.com/Class/newtlaws/u2l2c.cfm>.
Balanced & Unbalanced Forces
Trefil, James S., Rita Ann. Calvo, and Kenneth Cutler. McDougal Littell Physical Science. Evanston,
IL: McDougal Littell, 2006. Print.
Think-pair-share
Does an object always move when a force acts on it?
Demonstrate…
Does It Move?
Fgrav Fgrav
Fnormal
Fgrav
Fnormal
Fapp
3-2-1 Review
Jot down: 3 types of forces
2 different force diagrams
1 question you have
Lab Activity
"Forces and Motion: Basics." PhET. Web. 17 Apr. 2013.
<http://phet.colorado.edu/en/simulation/forces-and-motion-basics>.
Lab Activity Discussion
Compare PhET results Big ideas?
BrainPOP – Newton’s Laws
"Newton's Laws of Motion." BrainPOP. Web. 17 Apr. 2013.
<http://www.brainpop.com/science/motionsforcesandtime/newtonslawsofmotion/>.
Apply Newton’s Laws
1st Law• With partner/group• Create basic demonstration
• Materials found around room• Create force diagram• Share in ~5 minutes
Apply Newton’s Laws
2nd Law
• Discuss with partner
• Rocket acceleration/fuel amount?
Trefil, James S., Rita Ann. Calvo, and Kenneth Cutler. McDougal Littell Physical Science. Evanston,
IL: McDougal Littell, 2006. Print.
Apply Newton’s Laws
3rd Law• Discuss with partner• Action/reaction forces?
• Interaction diagram…
Trefil, James S., Rita Ann. Calvo, and Kenneth Cutler. McDougal Littell Physical Science. Evanston,
IL: McDougal Littell, 2006. Print.
More 3rd Law…
Trefil, James S., Rita Ann. Calvo, and Kenneth Cutler. McDougal Littell Physical Science. Evanston,
IL: McDougal Littell, 2006. Print.
Newton’s Laws Describe Motion
Trefil, James S., Rita Ann. Calvo, and Kenneth Cutler. McDougal Littell Physical Science. Evanston,
IL: McDougal Littell, 2006. Print.
3-2-1 Review
Jot down: 3 – Newton’s 3 laws, in your own words
2 – examples of laws being applied (any)
1 – question you have about Newton’s Laws
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