1.1

Question 1

Abstraction

Answer 1

Procedural abstraction gives a name to a procedure. People can then use the procedure without worrying about the finer grain details.

Question 2

Adaptive technology

Answer 2

Adaptive technology helps increases or maintains the capabilities of a person with a disability

Question 3

Analog

Answer 3

Analog information has continuous values instead of jumping from one value to another value without passing through the values in between. Most physical information such as position, wind speed, light intensity, or sound pressure, is analog.

Question 4

Arguments

Answer 4

The values that a program provides to a function.

Question 5

Authentication

Answer 5

When two parties exchange information so that they trust that each other is who they say they are

Question 6

Backlog

Answer 6

A prioritized list of features or user stories to add to a program

Question 7

Binary

Answer 7

A prioritized list of features or user stories to add to a program

Question 8

Boolean expression

Answer 8

A Boolean expression is either True or False. Boolean operators include “and,” “or,” and “not.”

Question 9

Character

Answer 9

Any single typeset unit, including uppercase and lowercase letters, digits, punctuation marks, international characters like letters with accent marks, and special characters like tabs and carriage returns

Question 10

Components

Answer 10

Parts of an interface

Question 11

Concatenate

Answer 11

To tack together two strings of characters, making one longer string

Question 12

Computational thinking

Answer 12

Habits that help people solve problems with computers. Computational thinking habits cause a person who is facing a problem to ask how computers could help them be more creative, to communicate, to collaborate, to use data or the Internet, or to use crowdsourcing or simulation, to solve a problem.

Question 13

Creative expression

Answer 13

Computing helps people create sound, movies, 2D media such as screen images or paper art, 3D media including computer-controlled subtractive art (milling) or additive art (3D printing), user interface design, user experience design

Question 14

Data collection and analysis

Answer 14

Data can be generated by sensors like thermometers, cameras, microphones, and keyboards and collected in storage. Data analysis uses creative ways to see patterns in data and using mathematics to describe those patterns.

Question 15

Decomposition

Answer 15

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

Question 16

Default

Answer 16

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

Question 17

Digital

Answer 17

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 18

Digital divide

Answer 18

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

Question 19

Economic impact

Answer 19

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 20

Evaluate

Answer 20

To determine the result of an expression

Question 21

Event

Answer 21

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

Question 22

Event handler

Answer 22

A part of a program that runs when an event occurs

Question 23

Global variable

Answer 23

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 24

Input

Answer 24

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

Question 25

Interface

Answer 25

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

Question 26

Modeling and simulation

Answer 26

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 27

Output

Answer 27

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 28

Parameters

Answer 28

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

Question 29

Processor

Answer 29

The component of a computer that follows instructions

Question 30

Professional greeting

Answer 30

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

Question 31

Property

Answer 31

A variable that stores information about an object

Question 32

Sprint task list

Answer 32

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 33

String

Answer 33

A sequence of characters

Question 34

Team norms

Answer 34

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 35

Variable

Answer 35

A place in memory to store a value

Question 36

Voltage

Answer 36

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.