When is friction produced?, When an object stays perfectly still on its own., When two surfaces rub against each other., Only when objects are moving at very high speeds., How does the texture of a surface affect the amount of friction?, The rougher the surface, the more friction it creates., The smoother the surface, the more friction it creates., Texture does not change the amount of friction., Which of these daily activities rely on friction to work properly?, Watching a movie on a screen., Writing with a pencil, Lighting a match., Thinking about a math problem., Which example shows friction helping us move?, Friction between a hand and a doorknob., Friction between the bottom of a shoe and the floor., Friction between a bicycle brake and the wheel., What happens when there is NOT enough friction, such as when walking on ice?, You might slip and fall., It becomes much easier to stop moving., Your shoes will wear out much faster., How does friction help a bicycle stop?, Friction between the handlebars and the rider's hands., Friction between the air and the rider's clothes., Friction between the brake pads and the wheel., Which of the following is true about friction?, Friction is always a bad thing because it slows us down., Friction can be both helpful and harmful., Friction only exists in science laboratories., Scenario: You are in a bathroom with a wet floor. Which slipper should you choose to prevent a slipping accident?, Slippers with a completely smooth, flat plastic bottom., Slippers with a rough, textured rubber sole., Soft silk slippers., In which of these situations would you want to REDUCE friction?, Adding sand to a snowy road to help car tires., Putting oil on a squeaky door hinge., Using chalk on your hands before climbing a rope., * What is a common "side effect" of friction when two surfaces rub together quickly?, The surfaces become much colder., The surfaces generate heat., The objects become lighter in weight..

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