This reviewer covers the DepEd MELC-aligned Grade 6 Science competencies. Read each section, study the tables, and remember the exam hacks.
Mixtures and Their Separation
When materials are mixed, they do not form new substances, so they can be recovered using separation techniques. Useful mixtures include food, drinks, and herbal medicines.
| Technique | Separates |
|---|---|
| Filtration | Insoluble solids from liquid |
| Evaporation | Dissolved solid from solution |
| Decantation | Settled solid from liquid |
| Sieving | Solids of different sizes |
The Human Body Systems
The organ systems work together to keep us alive. Classify plants by reproductive structures and animals by the presence or absence of a backbone (vertebrates vs. invertebrates).
| System | Main Job |
|---|---|
| Digestive | Breaks down food |
| Respiratory | Takes in oxygen |
| Circulatory | Transports blood |
| Musculo-skeletal | Support and movement |
Energy and Forces
Heat, light, sound, electricity, and motion are forms of energy that undergo transformation. Friction and gravity affect how people and objects move.
In an electric circuit you need a source (battery), a path (wires), and a load (bulb). A break anywhere stops the flow.
Earthquakes, Volcanoes, and Weather
Describe what happens during earthquakes and volcanic eruptions and what to do when they occur. Larger ecosystems include rainforests, coral reefs, and mangrove swamps.
During an earthquake: Duck, Cover, and Hold. Do not run outside while the ground is still shaking.