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Science Chapter 2

Science Questions

QuestionAnswer
List examples of gravitational forces. -An apple falling, being able to jump and not fall away, etc. -All objects have a gravitational pull. -An object with a small mass has a weak gravitaional pull. -An object with a large mass has a stronger gravitational pull.
What is the difference between effort arm and load arm? Effort arm is the part of a lever that extends from the fulcrum to where the force is applied. Load arm is the part of a lever that extends from the fulcrum to the mass being moved.
What is the difference between weight and mass? Weight measures the pull of gravity on an object. Mass measures the amount of matter in an object.
What are the different types of levers? Give examples for each. Class 1 Levers: the fulcrum is between the load force and the input force. Class 2 Levers: the load force is between the fulcrum and the input force. Class 3 Levers: the input force is between the fulcrum and the load force.
What are examples of the different types of levers? Class 1 Levers: A teeter totter/seesaw Class 2 Levers: A wheelbarrow Class 3 Levers: A fishing rod
What are 6 simple machines? Give examples. -Inclined plane: Ramp -Wedge: Knife -Screw: Screw -Lever: Wheelbarrow -Wheel & Axle: Car wheels -Pulley: Construction crane
Name 5 or more types of forces. -Gravitational force (gravity) -Magnetic force -Electrical force (electricity) -Mechanical force -Frictional force (friction) -Tensile Force -Compressive Force -Rotational Force
Give examples of each force. -Gravity: Pull of earth -Magnetic Force: Magnetic pull or push -Electricity: Lightning, etc. -Mechanical Force: Punch, etc. -Friction: Rubbing, etc. -Tensile force: Tightening -Compressive force: Crush, etc. -Rotational force: Twist, etc.
Created by: LAC