Mechanical Systems Multiple Choice Unit Review

A tire company is creating a new tire for a motorcycle to drive off-road in sandy and rocky conditions as well as on roads. Engineers developed three different tread patterns. Based on the engineering design process, the next step the company should take is to:

• Send out a questionnaire about tires to the public

• Research the properties of rubber

• Select which tread design will be best

• See which tire is the most expensive

The only way to know if a design will work in real-world conditions is to build a prototype, based on the plan. This is part of which step in the Engineering Design Process?

• Plan

• Make a Model

• Reflect and Redesign

• Define the problem

Engineers realize that their prototype does not work after testing it several times. What must they do next?

• Make iterations or improvements

• Communicate the Design

• Select the Plan

• Test it more

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Which of the following is an example of how scientific understanding has influenced automobile technology?

• Consumer demand for integrated technology has brought the introduction of Bluetooth and GPS systems into cars

• Climate change concerns have led to gas-electric hybrids

• Fed up with injuries from unrestrained passengers, doctors demanded the introduction of seatbelts in cars

• The study of laws of force and motion in collisions led to the use of crumple zones in cars.

Which of the following is an example of how the environment has influenced automobile technology?

• Consumer demand for integrated technology has brought the introduction of Bluetooth and GPS systems into cars

• Climate change concerns have led to gas-electric hybrids

• Fed up with injuries from unrestrained passengers, doctors demanded the introduction of seatbelts in cars

• The study of laws of force and motion in collisions led to the use of crumple zones in cars.

Which best describes the function of bike 2 (mountain bike)?

• Travel through rough terrain

• Travel quickly over smooth terrain

• Extra strong frame with dual suspension

• Under $200, minimum 20 inch wheels, durable

Which best describes the design of bike 3 (city bike)?

• Travel quickly over smooth terrain

• Lightweight frame, narrow smooth tires, racing handlebars

• Extra strong frame with dual suspension

• Under $200, minimum 20 inch wheels, durable

What is a machine?

• Any instrument invented by humans

• Any instrument that uses a motor to function

• Any instrument that helps us to do work easily

• Any instrument that helps us move from one place to another place

Match the following terms to the correct Simple Machines

• Inclined Plane

• 
• Lever

• 
• Wedge

• 
• Wheel & Axle

• 
• Pulley

• 

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Which of the following does NOT match a simple machine to a possible function?

• Lever - to carry or move heavy objects easily

• Wheel and axle - to cut or separate objects

• Pulley - to lift objects to a higher place

• Gear - to move objects easily