Interactive friction worksheet for students to learn and fill in facts about types, forms, causes, and affecting factors of friction.

- TYPES: Static friction (resists the start of motion), Kinetic friction (acts during motion), Rolling friction (resists rolling objects), Fluid friction (opposes motion through fluids like air or water).
- FORMS: Sliding friction (surfaces slide past each other), Rolling friction (wheel or ball rolls over surface), Air resistance (fluid friction in air), Water resistance (fluid friction in liquids).
- CAUSES: Surface roughness (microscopic bumps interlock), Adhesion (molecular attraction between surfaces), Deformation (materials deform under pressure, creating resistance).
- AFFECTING FACTORS: Surface texture (rougher surfaces increase friction), Normal force (greater force pressing surfaces together increases friction), Material type (different materials have different friction coefficients), Lubrication (reduces friction by separating surfaces).