# Coaster Lab

Topics: Marble, Qualitative research, General relativity Pages: 2 (343 words) Published: March 16, 2009
Roller Coaster Lab
Question:
• How will I keep my marble to stay in the foam tracks?
• My goal is to keep my marble in the foam tubes and make the marble go to one end to another under 10 seconds. Background Information:
• Gravity keeps an object down.
• When an object speeds up there is more momentum that makes it travel longer. • An object speeds up by the gravity pulling the marble down. Hypothesis:
• If I drop a marble from 9 feet going through foam tubes then it will not fall out because I made all the tube facing upward using gravity force. Independent variable: the size of the experiment

Dependent variable: the time the marble went from start to finish. Control: the foam tubes the base.
Materials:
• 7 pieces of foam track
• Blues tape to hold the track together
• Stop watch
• 1 stool and 1 chair
• Paper and a pencil to record data
• Small marble
• String to measure the roller coaster
• A measuring stick
Procedure:
• Choose a spot in the room for the track
• Gather materials
• Create a track
• Measure the distance
• Time the marbles speed in seconds
• Divide the length by the seconds
• Sketch a drawing of the coaster
Data:
• On separate piece of paper
Data Analysis:
• Quantitative
1. Length- 441cm.
2. Time average- 3sec. 28 mil. Sec.
3. Speed average- 134cm. /sec.
• Qualitative-
1. Marble dropped out of the foam 2 times
2. Tape came undone during the experiment
Conclusion:
• My hyoithesis: If I drop a marble from 9 feet going through foam tubes then it will not fall out because I made all the tube facing upward using gravity force. Independent variable: the size of the experiment

Dependent variable: the time the marble went from start to finish. Control: the foam tubes the base.
My hypothesis is incorrect because I made some of the foam tilted and tested my experiment and the ball traveled across the room. If I redid the lad I would of made a more complex coaster and have more of a twist to...