B.C. Science Probe Grade 5/Chapter 4:Design your own experiment

Step 1	Place your tile, sandpaper, fur and wood on a table,
Step 2	Take your tile and push it along the sandpaper, observe how much friction is made when you move the tile along the sandpaper,
Step 3	Repeat step 2 except with the fur instead of the sandpaper,
Step 4	Repeat with the wood,

Prediction	Was my prediction correct?
I predict that I would need more force when I slide the tile across the sandpaper,	Yes, my prediction was correct,
And I wouldn’t need as much force for the fur and wood,	Yes, my prediction was correct,

Interpret Data and Observations

1.Which surface required the greatest amount of force to move the block?

Answer: The sandpaper,

2. Which surface required the least amount of force to move the block?

Answer: The fur,

3. How did the surface texture effect the amount of force needed to move the block?

Answer: The surface of the sandpaper was rough and created more friction, making the block stop faster. However, the surface of both the fur and wood was smooth, creating less friction, which caused the block to move easily.

4. Look back at my prediction. Did my results fully support, partly support, or not support my prediction? 

Answer: My prediction was exactly correct, the result was the same.