1.2

Question 1

Decomposition

Answer 1

A problem solving a strategy of breaking a problem apart into a smaller problem

Question 2

Default

Answer 2

A default value is a value that is a variable that will have no action taken by the user.

Question 3

Digital

Answer 3

Digital information has discrete values with gaps between the values. Digital information can be exactly represented using a binary representation. Digital information can be duplicated exactly, without loss in quality. Digital information can be transmitted error-free

Question 4

Digital Divide

Answer 4

The contrast between two groups’ access to computing resources and the Internet on the basis of race, wealth, or national boundaries

Question 5

Economic Impact

Answer 5

Economic impacts of computing include changes in the numbers types, and wages of jobs, and changes in the amount, type, and cost of services, goods, and materials produced

Question 6

Evaluate

Answer 6

To determine the result of an expression

Question 7

Event

Answer 7

An action that triggers an event handler to be executed, such as user input or a timer’s alarm

Question 8

Event handler

Answer 8

A part of a program that runs when an event occurs

Question 9

Global variable

Answer 9

A variable that can be used anywhere in a program, unlike a local variable, which can only be used in one portion of a program. In App Inventor, procedures, event handlers, and for loops can create a local variable that can only be used inside that procedure, event handler, or for loop

Question 10

Input

Answer 10

Information provided to the computer from a person or from another computer, through input devices such as the keyboard, mouse, or touch screen

Question 11

interface

Answer 11

The way a human interacts with a computer through the input and output

Question 12

Modeling and simulation

Answer 12

A model is a simplified description of some object or phenomenon. A simulation is a computer-executed version, often predicting how an initial state will evolve over time

Question 13

Output

Answer 13

Information sent by the computer to a person or to another computer, through output devices such as a display or printer, speaker, or motor

Question 14

Parameters

Answer 14

Variables that can be used inside a procedure. The variables are initialized with arguments’ values when the procedure is called.

Question 15

Processor

Answer 15

The component of a computer that follows instructions

Question 16

Professional Greeting

Answer 16

A standardized procedure that professionals use when they meet or begin work together

Question 17

Property

Answer 17

A variable that stores information about an object

Question 18

Social impacts

Answer 18

Social impacts of computing include changes in how people communicate with each other and in how groups of people form and function, including circles of friends and structures of government

Question 19

Sprint task list

Answer 19

A list of small steps to accomplish, breaking down a user story from the backlog

Question 20

String

Answer 20

A sequence of characters

Question 21

Team Norms

Answer 21

Team norms are agreements among all team members. Team norms typically spell out that all team members will provide input and provide protocols for communication, work together, and conflict resolution

Question 22

Variable

Answer 22

A place in memory to store a value

Question 23

Voltage

Answer 23

Voltage is the energy difference per electron between two locations. The energy can be converted to kinetic energy when electrons fall from low voltage to high voltage