1) A crowbar is found in all the three classes of lever, true or false? a) False b) Not sure c) True d) Somehow 2) What is a lever? a) It is a tool b) It is a machine c) It is a wheelbarrow d) It is a simple machine with three parts 3) Which one is not part of a lever? a) Handle b) Pivot c) Fulcrum d) Load 4) In the first-class levers, the _________ is always at the centre. a) Effort b) Pivot c) Mass d) Load 5) Human arm is in______ class of levers. a) First b) Second c) Third d) Fourth 6) Which tool is in the second class levers? a) Door hinges b) Fishing rod c) See saw d) Secatuers 7) _____ is the force applied to overcome the force of the load. a) Load b) Mass c) Effort d) Fulcrum 8) Which part of these levers should be lubricated to reduce friction? a) Load b) Effort c) All parts d) Pivot 9) Machines are used to make work _______ a) Better b) Good c) Easier d) Difficult 10) Name one double lever a) Hammer b) Crowbar c) Wheelbarrow d) Scissors 11) A broom is example of which class lever a) First b) second c) third d) none

Simple machines Quiz

列印
嵌入

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?