Lesson 1 Review

Your classmate Aiden and you have assembled a mechanical toy that is supposed to move across the floor, but it does not work on your first attempt. Your teacher says this is ok because you have failed forward. What do they mean?

• Every idea or prototype will work as intended; you should stop working on the toy.

• By learning what does not work with your design, you have learned how to improve on your next attempt.

• You have failed this assignment by not getting it correct on the first attempt and should give up.

• By learning what does not work, you realize that you cannot do this and should drop the class.

The gear which transmits power and motion to the rest of the system is called? 

• Driven gear

• Output gear

• Driving gear

• Gear train

The input gear is also called a driving gear.

• True

• False

The output gear is the same as the driving gear.

• True

• False

The member of a pair of gears to which motion and power are transmitted by the other is called? 

• Driven gear

• Input gear

• Driving gear

• Gear train

The gear(s) between a driving and driven gear is called?

• Idle gear

• Input gear

• Output gear

• Gear train

How can you identify the driving and driven gears in a mechanical system?

• The driving gear is the one that is smaller, and the driven gear is always bigger.

• The driving gear is the one that receives power first, and the driven gear is the one that moves as a result.

• The driving gear turns faster than the driven gear.

• The driven gear is always at the center of the system.

Devices that collect information are called __________

• Input

• Output

• System

• Device

Devices that produce a result are called _______

• Input

• Output

• System

• Device

What is the purpose of adding comments in a program?

• To make the program run faster

• To describe what the code is doing

• To change how the program runs

• To create visible messages in the program