Science - Licensurehub

Definition: Plant classification is grouping plants into categories based on similarities in structure, reproduction, and function.
Types of Classification:
- Root system: Taproot (e.g., carrot), Fibrous root (e.g., grass)
- Shoot system: Woody (e.g., mango tree) and Herbaceous (e.g., sunflower)
- Reproduction: Flowering (angiosperms, e.g., rose), Non-flowering (gymnosperms, e.g., pine tree)
Purpose: Helps learners understand diversity and the relationship between structure and function in plants.
Example for Classroom: Use local plants like cocoa, maize, or palm to classify.

Tip for GTLE: Questions often ask you to classify given plants based on roots, leaves, or reproduction.

2. Metals and Properties

Definition: Metals are elements that are shiny, malleable, ductile, and good conductors of heat and electricity.
Properties of Metals:
- Lustre: Shiny appearance
- Malleability: Can be hammered into sheets
- Ductility: Can be stretched into wires
- Conductivity: Can conduct heat/electricity
Examples & Uses:
- Copper → electrical wiring
- Iron → construction
- Aluminium → utensils

Tip for GTLE: Often, questions test the link between property and use (e.g., “Why is copper used in wires?” – because of high conductivity).

3. Mixtures and Separation

Definition: A mixture is a combination of two or more substances that can be separated physically.
Types of Mixtures:
- Homogeneous → uniform composition (salt + water)
- Heterogeneous → non-uniform (sand + iron fillings)
Separation Methods:
- Filtration: Sand from water
- Evaporation: Salt from saltwater
- Magnetism: Iron filings from sand
- Decanting: Oil from water

Classroom Tip: Conduct simple experiments using local materials to make the concept concrete.

Unit 13: Cycles

1. Earth–Sun Relationship

Definition: The Earth-Sun relationship refers to the interaction between the Earth and the Sun that causes day/night and seasons.
Key Points:
- Earth rotates on its axis → day and night
- Earth revolves around the Sun → seasons
- Tilt of Earth’s axis → intensity of sunlight
Example: Ghana experiences a dry season and wet season due to its position near the equator.

2. Water Cycle

Processes:
- Evaporation: Water from oceans and rivers becomes water vapor
- Condensation: Water vapor forms clouds
- Precipitation: Rain falls back to the earth
- Transpiration: Water released from plants
Purpose: Explains the continuous movement of water in the environment

Classroom tip: Use diagrams to trace water from rivers to clouds to soil.

3. Carbon & Nitrogen Cycles

Carbon Cycle: Movement of carbon through the atmosphere, plants, animals, and soil.
- Photosynthesis → CO₂ absorbed by plants
- Respiration → CO₂ released back to atmosphere
Nitrogen Cycle: Conversion of nitrogen between atmosphere, soil, and living organisms.
- Nitrogen fixation → bacteria in soil convert N₂ to usable forms
- Denitrification → bacteria return nitrogen to atmosphere

4. Plant Life Cycle

Stages:
- Seed → Germination → Seedling → Mature Plant → Flower → Pollination → Seed Formation
Purpose: Helps learners understand plant growth, reproduction, and survival

5. Conservation of Resources

Definition: Protecting natural resources to ensure sustainability.
Examples:
- Planting trees (forests)
- Water conservation (rainwater harvesting)
- Reducing energy consumption
Classroom Activity: Discuss local conservation practices in Ghana.

Unit 14: Systems

1. Human Body Systems

Definition: Groups of organs working together to perform specific functions.
Major Systems:
- Circulatory system → heart, blood vessels
- Digestive system → stomach, intestines
- Respiratory system → lungs, trachea
- Excretory system → kidneys, bladder
- Skeletal & muscular systems → support & movement

GTLE Tip: Know functions and interdependence (e.g., heart pumps blood that carries oxygen from lungs to muscles).

2. Solar System

Definition: The Sun and all celestial objects bound to it by gravity.
Components:
- Sun, planets, moons, comets, asteroids
Key Points:
- Earth is the third planet from the Sun
- Difference between planets, stars, and satellites
Example: Earth → planet, Moon → satellite, Sun → star

3. Ecosystems

Definition: A community of living and non-living things interacting in an environment.
Components:
- Biotic → plants, animals
- Abiotic → water, sunlight, soil
Examples: Forest ecosystem, pond ecosystem
Interdependence: Plants provide oxygen, animals provide CO₂

Unit 15: Forces & Energy

1. Forms and Sources of Energy

Forms: Mechanical, heat, light, chemical, electrical, nuclear
Sources:
- Renewable → solar, wind, hydro
- Non-renewable → coal, oil, gas
Energy Conversion: Light → heat → mechanical

2. Electricity

Definition: Flow of electric charges through a conductor
Generation: Power plants → transmission lines → homes
Types: Direct current (DC), Alternating current (AC)

3. Simple Machines

Definition: Devices that make work easier
Types:
- Lever → crowbar
- Pulley → flagpole system
- Inclined plane → ramp
Example: A seesaw is a lever; ramps reduce effort to lift objects

4. Circuits and Conductors

Electric Circuit: Path through which electricity flows
Components: Battery, wires, switch, bulb
Conductors & Insulators:
- Conductors → metals (copper, aluminium)
- Insulators → plastic, rubber

Unit 16: Humans & Environment

1. Personal Hygiene

Definition: Practices to maintain cleanliness and prevent disease
Examples: Handwashing, brushing teeth, bathing

2. Common Diseases

Examples in Ghana: Malaria, Eczema, Meningitis, Diarrhea
Prevention: Clean environment, proper waste disposal, vaccination

3. Science & Technology

Definition: Application of scientific knowledge to practical purposes
Examples: Solar panels, mobile phones, water purification
Classroom Tip: Discuss local technological innovations

4. Climate Change

Definition: Long-term changes in weather patterns due to human activity
Causes: Deforestation, greenhouse gas emissions
Effects: Flooding, drought, rising temperatures
Prevention: Plant trees, reduce carbon footprint

Unit 12: Diversity of Matter

1. Classification of Plants