1) __________ make our work easier a) Energy b) Work c) Machines 2) An example of simple machine is a) A car b) A scissor c) A mobile 3) The picture is of a a) Simple machine b) Complex machine 4) A______ is the simplest of all types of machines. a) Wheel and axle b) Lever c) Pulley 5) The fulcrum lies between the load and the effort in class 2 lever a) False b) True 6) The fixed point about which a lever can rotate is called a a) Lever b) Fulcrum c) Load 7) Work is done whenever a) A force is applied b) You gets tired  c) A force moves an object 8) The force applied on the lever is called the a) Load b) Effort c) Lever 9) Which of the following is a class 1 lever a) Lemon squeezers b) Beam balance c) Crowbar 10) _______ is defined as the ability to do work a) Load b) Energy c) Machines

Physics

由
列印
嵌入

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?