Grade 9 Natural Sciences Term 3 Test Scope Flashcards

Vocabulary flashcards covering key topics, formulas, definitions, and components from the Grade 9 Natural Sciences Term 3 Test Scope.

Weight Calculation Formula

$$W = mg$$

Total Series Resistance Formula

$$R_T = R_1 + R_2 + R_3$$

Ohm's Law Formula

$$V = IR$$

Friction

A force topic covering uses of friction, ways to reduce friction, and force diagrams (labelling and identifying forces acting on an object).

Mass and Weight

Concepts requiring an understanding of their differences, the units in which each is measured, and weight calculation using $W = mg$.

Electrostatic Force

A force topic covering like and unlike charges and how electrons transfer between objects before and after rubbing.

Magnetic Force

A type of non-contact force focused on the uses of magnets.

Lightning

An electrostatic topic covering how lightning forms and safety practices during lightning.

Cell vs Battery

A core topic in electric circuits requiring knowledge of their respective definitions and functions.

Series and Parallel Circuits

Circuit configurations requiring knowledge of their differences, calculations, circuit diagrams, correct symbols and connections, open and closed circuits, what happens when a resistor is added, and conditions required for a bulb to glow.

Factors Affecting Resistance

Variables and factors influencing electrical resistance, requiring graph interpretation, identifying independent, dependent, and controlled variables, and writing a hypothesis.

Resistors Connected in Series

A circuit arrangement where total resistance is calculated using $R_T = R_1 + R_2 + R_3$ and current is calculated using Ohm's Law ($V = IR$).

Koeberg Nuclear Power Station

A specific nuclear power station featured in the revision of electricity generation and nuclear power.

National Electricity Grid

The system involved in electricity distribution, revised alongside nuclear power stations, electricity consumption, and calculating electricity costs.

Fuse

A component listed under Electrical Safety whose specific function must be revised.

Circuit Breaker

An electrical safety device whose function must be revised.

Three-Pin Plug

An electrical component requiring knowledge of its individual parts and their functions.