Unit 4 Study Guide

______________ are used to reduce the complexity of a program and makes them easier to read, modify, and maintain.

• Algorithms
• Buttons
• Encryptions
• Procedures

Your teacher asks you to draw a face using the Logo programming environment. Before you begin the actual programming, the teacher requires you to write out each of the steps in the process. What are you being asked to define?

• Algorithm
• Model
• Procedure
• Visualization

The implementation of the _________________ algorithmic control structure frequently includes the use of loops.

• Abstraction
• Repetition
• Selection
• Sequence

Which of the following is an example of assignment? (Choose all that apply).

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5) Which of these is an example of repetition? (Choose two).

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6) Which of these is an example of selection?

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7) Which of these is an example of a conditional? (Choose two).

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8) Assuming that forward tells the Android to move forward by 10 pixels and turn tells it to turn right by 90 degrees, what shape will be drawn by this algorithm? MOVE_FORWARD( )ROTATE_RIGHT( )MOVE_FORWARD( )ROTATE_RIGHT( )MOVE_FORWARD( )ROTATE_RIGHT( )MOVE_FORWARD( )ROTATE_RIGHT( )

• A circle
• A rectangle
• A right angle
• A square

9) _________________ is often used by programmers to help plan out the solution to a problem.

• Encryption
• Pseudocode
• Refactoring
• Visualization

11) What will be displayed if the following random numbers are chosen when the button is clicked five times: 1, 1, 2, 1, 2?

• Heads, heads, tails, heads, tails
• Heads, tails, tails, heads, tails
• Tails, heads, tails, tails, heads
• Tails, tails, heads, tails, heads