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Upper Elementary Science - II4.13 Friction

 Friction is a force that happens when two bodies rub against each other. Friction is higher when the surfaces are very rough. Friction is a slowing force and is a kind of resistance to motion of objects. Friction can be classified as: Static Friction Kinetic friction Static friction: The friction acting on a body at rest. The force being applied on a body is usually referred to as static friction. Kinetic friction: The friction on a body that is moving is called kinetic friction. Friction occurs among all states of matter. Directions: Answer the following questions.
 Q 1: On which of these surfaces will a toy slope down easilyPolished floorCarpetA rough wall Q 2: You are able to sit on a slope without sliding. What stops you from sliding downGravityForceWeightFriction Q 3: Friction occurs only among solidsTrueFalse Q 4: Which of these is a method to reduce frictionApplying gritOiling the door hingesUsing checked surfaces Q 5: Resistance is a type of frictionFalseTrue Q 6: If you scrape a smooth surface the friction wouldIncreaseDecreaseRemain the same Question 7: This question is available to subscribers only! Question 8: This question is available to subscribers only!