Science Workbook 4 , Primary Checkpoint | Free PDF

1. Living Things: Structure and function of bones and skeletons, importance of skeletal movement, types of skeletons, role of medicines in combating infectious diseases.

2. Energy: Presence and forms of energy, energy transfer mechanisms, transformations between energy types, energy utilization in living organisms.

3. Materials: Composition and properties of substances, behavior of solids and liquids, processes of melting and solidification, fundamental principles of chemical reactions.

4. Earth and Its Habitats: Structure and layers of the Earth, formation and impact of volcanoes and earthquakes, diversity of habitats and their characteristics.

5. Light: Mechanism of vision, properties of light travel, reflection from surfaces, presence of light in the solar system, distinction between day and night, shadow behavior and changes.

6. Electricity: Conductive and non-conductive materials, water as an electrical conductor, role of conductors and insulators in appliances, function of switches, impact of circuit modifications.