Machines and Their Importance Assessment

Fill in the blanks by selecting the correct word from the word bank. 1. Work is a force applied to an object that displaces it or moves it in the direction of that force.2. The instruments that allow us to do a task with less effort are called machines.3. The electric motoris a machine that transforms electrical energy into mechanical energy through magnetic fields.4. The plow is a machine used in agriculture to open furrows and turn the soil before sowing seeds.5. A machine composed of two different simple machines is called a complex machine.6. The screw consists of an inclined plane that forms a spiral around a cylindrical body.7. The simple machine is composed of one type of machine.8. Machines run on energy.9. Machines can transform the energy they receive.10. Part of the energy received by machines is lost through friction. Read each statement and select if it is True or False 1. The wedge consists of three inclined planes. True False 2. Ecofriendly machines use nonrenewable fuel.(Ecofriendly = good for the environment) True False 3. The screw is a variation of the inclined plane.(Variation = another way) True False 4. Machines reduce the effort needed to produce work. True False 5. A complex machine is composed of several ecofriendly machines. True False Read each statement and select the correct answer. I would use _ to remove a nail from a piece of wood. a wedge a lever an inclines plane a screw I would use _ to raise the sail on a ship. a wedge a nut and bolt a wheel and axle a pulley I would use _ to remove a screw. a wedge a lever a nut and bolt a pulley I would use _ to cut a piece of meat. a lever an inclined plane a wedge a wheel and axle Read the question and answer in at least 3 complete sentences. What would life be like without machines?