NS & Technology Project-Based Learning (Grade 9)

Vocabulary flashcards covering key terms from the NS & Technology project notes (circuits, components, and design processes).

Buzzer

An audible alert device that sounds when activated, used to signal events like door entry in the project.

LED (Light Emitting Diode)

A diode that emits light when forward-biased (current flows in the allowed direction).

Prototype

A working model of a device built to test ideas before final production.

Device

An electronic circuit or system designed to perform a specific function.

Circuit

A closed path through which electric current can flow.

Series Circuit

A circuit where components are connected one after another and current is the same through all components.

Parallel Circuit

A circuit where components are connected across the same two points so currents can split.

Circuit Diagram

A schematic drawing of an electrical circuit using standard symbols.

Symbol

A simplified graphical representation of a component used in circuit diagrams.

Resistor

A component that resists current, causing a voltage drop; measured in ohms.

Battery

A source of electrical energy made of one or more cells.

Diode

A two-terminal device that conducts current in only one direction.

Ohm's Law

V = IR; the relationship between voltage, current, and resistance.

Resistance

Opposition to the flow of current; measured in ohms (Ω).

Voltage

Electrical potential difference that drives current in a circuit.

Current

Flow of electric charge through a circuit.

Resistor Color Codes

Color bands on resistors that indicate their resistance value.

Diode Orientation

The polarity of a diode (anode to positive, cathode to negative) to ensure proper conduction.

Design Brief

A document outlining the problem, objectives, and constraints of a project.

Specifications

Detailed requirements derived from the scenario that the design must meet.

Constraints

Limitations or restrictions that affect design choices (e.g., cost, size, safety).

Isometric Grid

A grid used to create isometric drawings that show 3D views of objects.

Exploded View

A diagram that shows how parts fit together by separating them apart.

2D Freehand Sketch

A simple, hand-drawn representation of a structure or circuit.

Packaging Design

The design of the housing/box to present and protect the device.

Surface Area

The total area of all surfaces of a 3D object, used for packaging calculations.

Volume

The amount of space occupied by a 3D object.

Rectangular Prism

A common box-shaped 3D solid with rectangular faces.

Output

The measurable result produced by the device (e.g., brightness, signal).

Problem Identification

The process of identifying and defining the problem to solve in the project.