Natural Science - Term 2 - Week 4

An ecosystem is a community of living organisms interacting with their environment. It includes both biotic factors, such as plants and animals, and abiotic factors, like water and soil. Understanding how these components interact is crucial for studying natural science. This week, we will focus on the vocabulary associated with ecosystems, including terms like 'habitat', 'niche', and 'biodiversity'.

Let's consider a forest ecosystem. In this ecosystem, trees, birds, insects, and soil are all components. For example, the trees provide shelter and food for birds, while insects help decompose organic matter. When identifying components, we can categorize them into biotic and abiotic factors. Biotic factors include the living organisms, while abiotic factors include sunlight, temperature, and moisture levels.

In pairs, students will receive a list of vocabulary words related to ecosystems and their definitions. They will work together to match each word with its correct definition. For example, they will match 'habitat' with 'the natural home of an organism'. After completing the matching, pairs will share their answers with the class, discussing any discrepancies and clarifying misunderstandings.

Students will write a short reflection in their journals about what they learned this week regarding ecosystems. They should answer the following prompts: What was easy for you to understand? What concepts were challenging? How do you think ecosystems are important for our environment? This exercise will help them consolidate their learning and express their thoughts.

• Water
• Soil
• Trees
• Sunlight

Answer: Trees

Trees are living organisms, making them a biotic factor, while water, soil, and sunlight are abiotic factors.

• Ecosystem
• Niche
• Biodiversity
• Community

Answer: Niche

A niche refers to the specific role or function of an organism within its ecosystem.

Answer: Biodiversity refers to the variety of living organisms in a particular ecosystem.

Biodiversity is crucial for ecosystem health and resilience.

• Temperature
• Plants
• Water
• Soil

Answer: Plants

Plants are living organisms and therefore considered biotic factors.

Answer: Decomposers break down dead organic matter, returning nutrients to the soil.

This process is essential for nutrient cycling in ecosystems.

• A group of similar species
• A community of organisms and their environment
• A single organism
• A type of habitat

Answer: A community of organisms and their environment

An ecosystem includes both living organisms and their physical environment.

Answer: Sunlight and temperature.

These factors influence the living organisms in an ecosystem.

• Water