Increasing and Reducing Friction.pptx

Science 6

1. Increasing and Reducing Friction

2. Replacing smooth surfaces with rough ones can increase friction. Materials like rubber, leather, and spikes slows down motion. Example: carpet rubber mat rubber shoes leather gloves

3. To decrease friction, one method is to reduce the roughness of surfaces. using smooth materials such as plastic cover or silk cloth can make objects move fast and swift. Examples: plastic cover silk cloth ball bearings or rollers

4. For machines, friction affects their efficiency. Lubricants are substances that are applied to surfaces to reduce friction between moving parts. Examples: motor oil grease wax