Chapter 1 - Algorithms and Computer Programs

Question 1

Algorithm

Answer 1

List of actions that describe how to perform a task or solve a problem

Question 2

Output

Answer 2

End result of an algorithm

Question 3

Block

Answer 3

Sequence of actions within an algorithm that must be repeated

These are indented in code

Question 4

Nested Block

Answer 4

A block within another block

An action which will only occur if the condition of the block it is nested in is met

Question 5

Variable

Answer 5

Name given to a numeric value

Question 6

Input

Answer 6

Data in an algorithm that comes from outside the algorithm which it uses to complete the task

Algorithms can have any number of inputs, including 0

Question 7

Algorithm Header

Answer 7

Description of the algorithms name, inputs and outputs

Question 8

Pseudocode

Answer 8

Algorithms written in words

Question 9

Abstraction

Answer 9

Hiding details that aren’t currently important

Question 10

Refinement

Answer 10

Detailed description of how actions should be carried out

Eg. “Boil water”, how?

Question 11

Stepwise refinement

Answer 11

Going into greater detail on how to perform certain steps of a task