Friction

Sliding Down
Question:
Which object will slide down first.
Hypothesis:
We thought that the ice cube will fall down first.
You will need:
* Wide,smooth wooden board
* Table
* Variety of small objects that have at least one flat surface,such as an ice cube,eraser,match box,plastic and wooden blocks
* Hand lens(optional)
Steps
* Place the wooden board on a table.
* Arrange the objects along one edge of the board.
* slowly raise the edge of the board.
* Which object starts to slide down the board first?
Conclusion:
The block fall first rather then the ice cube.
Observation:
The wooden block slid down first because it had a smoother surface like the wooden board.
Result:
The wooden block slid down first followed by the matchbox then the plastic block then the ice cube then the rubber.
Conclusion:
The wooden block slid down first because it had a smooth surface and there was less friction.