Based on the data table, I can see the distances marbles rolled on different surfaces:
- Carpet: 24 cm
- Wood: 36 cm
- Tile: 52 cm
- Linoleum: 87 cm
Since friction opposes motion and causes objects to slow down, the surface that produced the most friction would be the one where the marble traveled the shortest distance. Looking at the data, the marble traveled only 24 cm on carpet, which is the shortest distance among all surfaces tested.
Therefore, carpet produced the most friction.
To complete the answer, I should also address the second part of the question about designing an experiment to answer the question "On which surface does a car travel the farthest?"
Solution:
The surface that produced the most friction is
carpet.
Explanation:
Friction is a force that opposes motion, causing moving objects to slow down. In this experiment, marbles were rolled down a tube onto different surfaces, and the distance each marble traveled was measured. The surface with the most friction would cause the marble to slow down the quickest, resulting in the shortest travel distance. Since the marble traveled only 24 cm on carpet (the shortest distance compared to wood at 36 cm, tile at 52 cm, and linoleum at 87 cm), carpet must have produced the most friction.
For the experiment design question:
To determine on which surface a car travels the farthest, you could design an experiment similar to the marble experiment:
1. Use a toy car and a ramp.
2. Place different surfaces (carpet, wood, tile, linoleum) at the bottom of the ramp.
3. Release the car from the same height on the ramp for each trial to ensure consistent starting energy.
4. Measure how far the car travels on each surface.
5. The surface where the car travels the farthest would have the least friction, while the surface where it travels the shortest distance would have the most friction.
This experiment would directly answer the question by measuring the distance traveled on each surface, with the farthest distance indicating the surface with the least friction.
Parent Tip: Review the logic above to help your child master the concept of friction worksheet pdf.