Froggy Jumps Simple MachinesVersión en línea We use several simple machines during the day. Have you ever tried to label or recognize them? This activity aims to help the students to recognize the simple machines around and understand where these machines are used? por Yesim Akarsu Avci 1 We use these on many machines, such as automobiles and bicycles. It was one of the first important inventions in history. a pulley b wheel c axle 2 An ........ connects two wheels on a machine, like on a skateboard. a wheels b pulley c axle 3 It is a kind of wheel that is used to lift things that are very heavy. a axle b pulley c wheel 4 It holds pieces of a machine together and make the machine strong. We use them to hold together small machines, like laptops or phones, and the biggest machines in the world, like airplanes and supercomputers. a lever b pulley c screw 5 When you climb a climbing wall, the rope that keeps you safe uses a ........., too. a wheel b pulley c screw 6 .............. is a simple rigid bar which is free to move around a point which is called fulcrum. a lever b wheel c pulley 7 It is an example of ......... a a lever b a pulley c a wheel 8 Which one is an example of pulley? a b c 9 Look at the picture, which simple machines can't you see? a screw b axle c lever 10 A seesaw is a ...................... a pulley b wheel c lever
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