Natural Science - Term 3 - Week 7

Core concepts in Natural Science include fundamental ideas that underpin scientific understanding, such as the scientific method, ecosystems, and the properties of matter. This week, we will focus on these concepts to build a strong foundation for future learning. Understanding these core ideas will help you analyze scientific phenomena and engage in critical thinking.

Consider the question: 'What effect does sunlight have on plant growth?' To investigate this, we would follow the scientific method: First, we would make observations about plant growth in different light conditions. Next, we would form a hypothesis, such as 'Plants that receive more sunlight will grow taller than those that receive less sunlight.' We would then conduct an experiment, collect data, and analyze the results to draw conclusions.

In pairs, list the components of an ecosystem, including biotic and abiotic factors. Discuss how these components interact with one another. For example, consider how plants (biotic) rely on sunlight (abiotic) for photosynthesis. After 10 minutes, share your findings with the class, highlighting any unique interactions you discovered.

Choose three different materials (e.g., water, wood, metal) and describe their properties in terms of state (solid, liquid, gas), density, and reactivity. Write a short paragraph for each material explaining how these properties affect its use in everyday life. For example, consider why metals are used for construction due to their strength and durability.

• Forming a hypothesis
• Making observations
• Conducting an experiment
• Analyzing data

Answer: Making observations

The scientific method begins with making observations to identify a question or problem.

• Soil
• Water
• Plants
• Temperature

Answer: Plants

Biotic factors are living components of an ecosystem, such as plants and animals.

• Solid
• Liquid
• Gas
• Plasma

Answer: Liquid

At room temperature, water exists in a liquid state.

Answer: An ecosystem is a community of living organisms interacting with their physical environment.

An ecosystem includes both biotic and abiotic components that interact with each other.

• Density
• Volume
• Mass
• Weight

Answer: Density

Density is defined as mass divided by volume.

Answer: A hypothesis is a testable prediction about the outcome of an experiment.

A hypothesis provides a basis for experimentation and can be supported or refuted.

• Animals
• Plants
• Sunlight
• Bacteria

Answer: Sunlight

Abiotic factors are non-living components, such as sunlight, water, and minerals.