The object didn't move as quickly on a rough surface making it stretch the rubber band more. ...Katherine

The rough surface affects the force needed to make an object move. ...You could put oil on it to make it move faster. ...Katlyn

The roughness of a surface creates more friction making more force be needed to pull an object. You could put wheels on the object to make it move better. ...Joe F.

The roughness of the carpet made friction so it took more force to move the box. We could ice over the carpet and it would take less force. ...Jonathan

The results changed when we used a rough surface by it needed more force to pull the box. The rough held the box back. One way to reduce the force needed is to put less weight in the box. Another way is to put grease or wax on the desk. ...Ashley H.

Mike and David tried the floor and the carpet. They found the floor required less pull to make the box move.

The stretch changes when there is more stuff to pull. My group used a clarinet, batteries, tape and everything at once. ...Orion

If you put more things in the box the rubberband streached farther than if there were less things in the box. First we tried an empty box and recorded how much force was needed to make it move. Then we put a cup in the box. We tried 2 shoes, 5 books and a football. The five books made the rubber band stretch 282 mm. ...Haley

The rubber band gets bigger and streched better when the load was heavier. ...Joe. K.

The heavier it is the more force you need to pull it. ...Ricki

To reduce the amount of strength it takes you could use a stronger thicker rubber band and ice over the desk. ...Chase

You could maybe ice the desk to make it move better. Or use wheels and oil them. ...Jordon

The rubber band really stretched when Brandon, Kevin & Joe K. tried to pull a clarinet!

The more weight, the more force was needed. We used a pack of cards, a battery, scissors and the Brain Quest Game. ...Cody

The more the object ways, the more the band will have to stretch. We used the Jenga game, a watter bottle, tape, and everything at once. ...Chase

The students followed the Investigation Activity on page B 54-55 of their Science Book. They filled out lab sheets to record their data and interpret their results.

Additional Investigations the fifth grade has done are
listed on our Science Index Page

January 13, 2003