Day 4: Marble Roller Coasters!
⚡ Energy in Motion: What Powers Your Roller Coaster? 🎢
Before we build, let’s talk about the two types of energy your marble will use to zoom, loop, and fly through your coaster:
⛰️ 1. Potential Energy (PE) = Stored Energy
This is the energy the marble has when it’s just sitting at the top of your track, waiting to go.
📍 The higher the marble starts, the more potential energy it has.
📍 Think of it like the marble’s energy waiting to be released—like a roller coaster at the top of the first big drop.
🎓 Formula:
PE=m×g×hPE = m \times g \times h
(mass × gravity × height)
💨 2. Kinetic Energy (KE) = Energy of Motion
This is the energy the marble has when it’s rolling down the track, gaining speed as it goes.
📍 As the marble drops, that stored potential energy transforms into kinetic energy.
📍 The faster it moves, the more kinetic energy it has!
🎓 Formula:
KE=12mv2KE = \frac{1}{2} m v^2
(½ × mass × velocity squared)
Click HERE for an interactive simulation
🔁 What Happens on Your Track?
At the top of a hill ➡️ maximum potential energy
As the marble starts moving ➡️ potential becomes kinetic
On a loop or curve ➡️ energy keeps converting back and forth
When the marble jumps a ramp or hits a turn ➡️ you’ll see energy at work (and maybe flying marbles!)
🧪 Your Challenge:
Design a track that takes advantage of energy conversion:
Start high for more speed 🌄
Use smooth curves to keep motion flowing 🌀
Think like a physicist and a roller coaster engineer 🎢👷♂️
Ready to put gravity to work? Let’s roll! 🧠⚙️💥
Instructions:
🎢 Marble Roller Coaster Challenge
Ready to design your own gravity-powered thrill ride? Grab your foam tubing, masking tape, and a marble—and let’s get rolling! 🌀💥
🎬 Step 1: Watch & Learn
▶️ Watch the video above to see how to set up your roller coaster. It’ll give you tons of ideas and tips!
🛠️ Step 2: Start the Track
Tape one end of your foam track to a table, chair, or other raised surface.
Use masking tape to hold it in place. 🎯
⛰️ Step 3: Build Slopes & Curves
Shape your track into curves, hills, and slopes.
Use tape to secure every twist and turn.
✅ Smooth transitions = faster marbles!
🔄 Step 4: Test It!
Place your marble at the very top.
Let it roll and observe what happens.
Adjust your angles or supports as needed. 🧠
🎯 Step 5: Add a Loop!
Shape a loop using the foam tubing. 🔁
Tape it tight so it holds its shape.
Use the video as a guide to make sure the marble has enough speed to complete the loop.
✈️ Step 6: Add a Jump Ramp
Use tape to make a small gap in the track.
Place a landing ramp (another piece of foam) where the marble can land safely.
Experiment with distances!
🌀 Step 7: Build Bigger!
Add more twists, turns, loops, and slopes to make your coaster as wild as you can imagine. 🧪
✅ Step 8: Test the Full Ride
Roll your marble from start to finish.
Watch for fall-offs or slowdowns.
Fine-tune your design until it’s smooth all the way through!
💡 Bonus Challenges:
Can you build a double loop? 🔁🔁
Can you make the marble jump through a hoop? 🎯
Can it land in a cup? 🏆
How long can you make your track? ⏱️
Get creative, test often, and most of all—have fun engineering your own gravity-powered masterpiece! 🎢🔥🎓