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Mousetrap Safety
Mousetrap Safety
Use eye protection at all times
Keep your fingers clear of the hammer wire
Respect your classmates
The Challenge!
The Challenge!
Task 1: Set a mousetrap!
Task 1: Set a mousetrap!
Task 2: Set and snap a mousetrap five times in a row!
Task 2: Set and snap a mousetrap five times in a row!
- Use a paddle popstick to snap the trap.
- Fix any broken parts on the trap.
Task 3: Set and snap a mousetrap to launch a ball!
Task 3: Set and snap a mousetrap to launch a ball!
- Use a paddle popstick to snap the trap.
- Launch a ping-pong ball. Use eye protection.
Task 4: Set and snap a mousetrap to launch a ball into a cup!
Task 4: Set and snap a mousetrap to launch a ball into a cup!
Use a paddle popstick to snap the trap.
Launch a ping-pong ball. Use eye protection.
Land the ball in a cup! Repeat the task a few times, moving the cup.
Self-Operating Napkin machine
Self-Operating Napkin machine
Rube Goldberg machine
Rube Goldberg machine
is a complex machine used to do a simple task.
Reflection
Reflection
Task 6: Answer the following in your journal.
Task 6: Answer the following in your journal.
- When you pull back and set the mousetrap, what type of energy is stored in its spring?
- When the mousetrap is released, how does the stored elastic potential energy change into kinetic (movement) energy?
- How does energy transfer from the moving mousetrap arm to the ball? What evidence shows that the ball has kinetic energy?
- As the ball rises into the air and then falls, how does its energy change between kinetic energy and gravitational potential energy?
- In your future Rube Goldberg machine, the ball could hit another object and start the next step. Describe the energy transfers and transformations that could happen. Where might some energy become sound or heat?
Marble run
Marble run
Contact and Non-contact forces
Contact and Non-contact forces
What actions trigger another movement in the marble run?
Todays Challenge:
Todays Challenge:
Work together with your table group to design and build a marble run that demonstrates how forces and energy can create movement!
Your goal is to create a marble run where one action causes another action to happen, creating a chain reaction.
What Your Marble Run Must Include
What Your Marble Run Must Include
Your marble run must include:
A starting point: Design a starting position where your marble can begin moving.
Energy transfer: Include at least one point where energy is transferred from one object to another. For example, a moving marble hits another marble, causing it to roll.
A trigger action: Include at least one point where an action triggers a new movement. For example, a ball and string fall, pulling or knocking something that starts another marble rolling.
A chain reaction: Your marble run should include a sequence of movements where one action causes the next action to happen.
A successful finish: Design a final point where your marble reaches its destination or triggers a final action.
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