Students will be able to analyze and interpret data to describe and predict the effects of forces including gravitational and friction on the speed and direction of an object. 8.P.2A.5
Content Knowledge Support
- Read and compete interactive science workbook pages 22-29.
Discussion Topic
- 🤔What force is more important to you: friction or gravity? 😬Choose either friction or gravity and describe in detail what your day would have been like so far without this force. Be sure to use specific details from the content of this module to tell your story.
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Recommended Exercises
(Level 3) Analysis
Investigate the effects of air resistance by recreating Galileo's famous experiment by dropping objects off the Tower of Pisa. You can drop ping pong balls, golf balls, soccer balls or watermelons. Objects can be dropped in air or no air, with or without a parachute using the Free Fall Tower Gizmo. |
(Level 3) Analysis
Investigate the effects of air resistance by recreating Galileo's famous experiment by dropping objects off the Tower of Pisa. You can drop ping pong balls, golf balls, soccer balls or watermelons. Objects can be dropped in air or no air, with or without a parachute using the Free Fall Tower Gizmo. |
Additional Exercises & Extensions
(Level 1) Comprehension
- Use the answer bank below to complete the following table:
(Level 2) Application
- Create a video that demonstrates how the force of friction and gravity impacts the speed and direction of objects.
- Copy the image below and use another creative application such as Google Draw create a free-body diagram that accurately represents AND describes how the forces of friction and gravity affect the speed and direction of this object if this person continues to not be able to move the object by adding at least two additional arrows.
(Level 3) Analysis
- Use the slow-motion camera on your phone to analyze how the forces of friction and gravity impact the speed and direction of an object being thrown up into the air.
- Use the Skate Park Phet simulation to analyze the force of friction using this assignment TEMPLATE.
- Use the Gravity force Lab Phet simulation to analyze how mass and distance influence the force of gravity.
- Complete the "Sticky Sneakers" lab and analysis using this assignment TEMPLATE.
- Investigate the effects of air resistance by recreating Galileo's famous experiment by dropping objects off the Tower of Pisa. You can drop ping pong balls, golf balls, soccer balls or watermelons. Objects can be dropped in air or no air, with or without a parachute using the Free Fall Tower Gizmo and this assignment TEMPLATE.
(Level 4) Evaluation
- What would happen to you if both the force of friction and the force of gravity suddenly just stopped? Explain using at least 5 specific details for each force.
- What is the most important factor in determining the force of gravity: the mass of the objects or the distance?
- What is the most important factor in determining the force of friction: the types of surfaces involved or how hard the surfaces are pushed together?
(Level 5) Creation
- Design and conduct a controlled scientific investigation to test how the force of friction impacts the speed and direction of an object.
Lab Exploration
Additional Explorations
- Investigate how to calculate acceleration due to gravity.
- Investigate how to calculate weight.
- Differentiate between static, sliding, or rolling friction.
Future Learning Connections (9-12)
- Use a free-body diagram to represent the normal, tension (or elastic), applied, and frictional forces on an object.
- Plan and conduct controlled scientific investigations to determine the variables that could affect the kinetic frictional force on an object.
- Obtain and evaluate information to compare kinetic and static friction.
English Language Learners
Module Review Resources
Vocabulary Practice
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