Natural Science - Term 3 - Week 5

In this section, we will review the main concepts covered in Term 3, including ecosystems, the water cycle, and the importance of biodiversity. Understanding these concepts is crucial as they form the foundation for more advanced topics in Natural Science. We will discuss how these elements interact within our environment and why they are essential for maintaining ecological balance.

Let's illustrate the water cycle with a simple diagram. The cycle includes evaporation, condensation, precipitation, and collection. For instance, when the sun heats water in rivers and lakes, it evaporates into the atmosphere. This water vapor then cools and condenses to form clouds, leading to precipitation as rain. Finally, the water collects in bodies of water, completing the cycle. Understanding this process helps us appreciate the importance of water conservation.

Students will participate in a vocabulary matching activity where they will match key terms with their definitions. Terms include 'ecosystem', 'biodiversity', 'photosynthesis', and 'habitat'. This activity will help reinforce their understanding of these essential concepts. After matching, students will discuss their choices in pairs to deepen their comprehension.

For independent practice, students will design a simple ecosystem on paper. They should include at least three different organisms (plants and animals) and describe how they interact with each other and their environment. This task encourages creativity while applying their knowledge of ecosystems. Students will present their ecosystems to the class, explaining the roles of each organism.

• Evaporation
• Condensation
• Precipitation
• Transpiration

Answer: Evaporation

Evaporation is the process where water changes from liquid to vapor, moving into the atmosphere.

• Ecosystem
• Biodiversity
• Population
• Community

Answer: Biodiversity

Biodiversity refers to the variety of living organisms in a specific area, contributing to the health of ecosystems.

• Water
• Soil
• Sunlight
• Carbon Dioxide

Answer: Sunlight

Sunlight is the main energy source that plants use to convert carbon dioxide and water into glucose during photosynthesis.

Answer: Producers, such as plants, convert sunlight into energy through photosynthesis, forming the base of the food chain.

Producers are essential as they provide energy for consumers in the ecosystem.

• Biotic factors
• Abiotic factors
• Climate change
• Organisms

Answer: Climate change

Climate change is an external factor that affects ecosystems but is not a direct component of an ecosystem.

Answer: The water cycle is crucial for distributing water across the planet, supporting all forms of life and maintaining ecological balance.

The water cycle ensures that ecosystems receive the necessary water for survival and growth.

• A group of the same species