VELOCITY VALLEY · ZOOMLING
Friction & Surfaces
Friction Flats
Learn with Zoomling, then use your clues in the adventure. Pause whenever you need time to read or think.
Speech bubbles tell the story. Music and sound effects are optional; use the player’s volume control.
Your Friction Flats adventure
Train more: lesson transcript and free resources
Zoomling — Friction & Surfaces Friction Flats
Hi!
I'm Zoomling.
Welcome to Friction Flats!
Will you help me investigate friction & surfaces?
The Grumblies have mixed up our clues.
Let's check the evidence!
Friction is a contact force that resists relative sliding between surfaces.
It can slow a moving object and also help provide grip.
Which force resists sliding?
- A. Gravity from the Moon alone
- B. Friction
- C. Only sunlight
The answer is B: Friction
Friction is a contact force that resists relative sliding between surfaces.
It can slow a moving object and also help provide grip.
That clue helps us make sense of this place.
Surfaces and conditions affect friction.
Compare the same cart, starting conditions and track slope
when investigating surface changes.
Which track stops this cart sooner?
- A. The rough test surface
- B. The smoother test surface
- C. Both stop at identical positions
The answer is A: The rough test surface
Our record releases the same cart in the same way
on two tracks.
It stops sooner on the rough test surface.
That result supports greater slowing in this particular comparison.
Hmm...
how does that connect to our first clue?
Our record releases the same cart in the same way
on two tracks.
It stops sooner on the rough test surface.
That result supports greater slowing in this particular comparison.
What should stay the same for a fair comparison?
- A. Only the record's font
- B. Change both cart and slope each time
- C. Cart and release conditions
The answer is C: Cart and release conditions
Our record releases the same cart in the same way
on two tracks.
It stops sooner on the rough test surface.
That result supports greater slowing in this particular comparison.
Nice investigating!
You've been following the evidence.
Let's bring our clues together before the adventure.
Friction is a contact force that resists relative sliding between surfaces.
Surfaces and conditions affect friction.
Our record releases the same cart in the same way
on two tracks.
You're ready to explore Friction Flats with me!
Choose TRAIN MORE if you'd like another look at the clues.
Choose START ADVENTURE when you're ready.
I'll be right here!
Or choose BACK TO MAP.
Every stop is open to explore!
Explore any of the six lessons
Every destination is open. No account, purchase, previous lesson, or completed video is required.