Presentation on theme: "Rolling. Problem: Does the height of the ramp affect the distance a car travels?"— Presentation transcript:
Problem: Does the height of the ramp affect the distance a car travels?
HYPOTHESIS If we roll a toy car down ramps of different heights and measure the distance it rolls, then we think the car on the highest ramp will roll the furthest distance. Rolling
HYPOTHESIS The Vote Rolling 8 reading books ramp 10 reading books ramp 12 reading books ramp
Rolling Variables Independent Variable- The element that we changed: The height of the ramp by adding more books. Dependent Variable- The element that was changed by adding more books: The distance the car rolled.
Rolling Materials 1. Reading books for ramp 2. A toy car 3. Centimeter tape measure Rolling
Procedure 1.With eight books build a ramp. 2.Roll car down the ramp. 3.Measure and record distance. 4.Repeat for a total of 5 trials. 5. Build a 10 book high ramp and repeat steps 2 – Build a 12 book high ramp and repeat steps 2 – 4.
Rolling Results Using our data we collected, with calculators, the total distance of each ramp height, then got an average by dividing the total by the number of trials, five for each height. See Data Table and Graph
Rolling Data Table
Rolling Ramp1Ramp 2Ramp3 1 st Trial369 cm531 cm583 cm 2 nd Trial399 cm512 cm571 cm 3 rd Trial377 cm546 cm563 cm 4 th Trial379 cm541 cm595 cm 5 th Trial391 cm534 cm568 cm Average383 cm532.8 cm576 cm Data Table
Rolling Data Graph
Com/science/forces/simple machines/ This is a movie which defines simple machines and ramps. It also explains why a ramp is useful and how it works easier. Force & Motion, Clint Twist, 2006, Bearport Publishing Company This colorful book discusses force, motion, pushing and pulling. It explains why it takes less force to move something down a slope. Force and Motion, 2003, Delta Education This book describes force, motion, energy, and work. It gives examples of all simple machines and pictures of these machines at work in our everyday life. Hands-On Science-Over 40 Fantastic Experiments-Forces and Motion, 2001, Kingfisher Publications. This book increased our knowledge about force and motion. Lots of activities about forces and simple machines are included. Check it out! Rolling Bibliography:
Rolling Conclusion We noticed that the more books we added to the ramp, the further the car traveled. The majority of the class predicted in the hypothesis that the twelve book ramp would travel the farthest distance. The fifteen students who voted for the twelve book ramp were correct. A ramp is an inclined plane, a simple machine, a tool that uses force to make work easier. We believe that the raised height did some of the work and made it easier for the car to move and move farther.