Science Review: Materials & Ecology

Explanation
The material being described as "rigid" means that it is stiff and does not easily bend or deform under pressure. Therefore, the correct answer is "True" as it aligns with the statement that the material is rigid.

Explanation
The given statement is "This material is waterproof." The correct answer is "False." This means that the material is not waterproof.

Explanation
The given statement is "This material is flexible" and the correct answer is "False". This implies that the material in question is not flexible.

Explanation
The given statement "This material is brittle" is a general statement about a material. The term "brittle" refers to the property of a material that makes it prone to breaking or shattering when subjected to stress or pressure. Therefore, if the material in question is brittle, it means that it is indeed prone to breaking easily. Hence, the correct answer is True.

Explanation
The statement "This material is elastic" is false. Elasticity refers to the ability of a material to regain its original shape after being stretched or deformed. If the material is elastic, it will return to its original shape once the force causing the deformation is removed. However, the given statement does not provide any information about the specific material, so it cannot be determined whether it is elastic or not. Therefore, the correct answer is false.

Explanation
The given correct answer is "Natural" because the statement mentions that the materials are produced by nature. This implies that the materials occur naturally in the environment without any human intervention or artificial processing. Therefore, the materials can be classified as natural rather than synthetic or midway, which would involve some level of human involvement or manipulation.

Explanation
The given statement states that "These materials are created by humans." This implies that the materials mentioned are not natural, as they are not created by nature or occur naturally. Instead, they are created synthetically, meaning they are artificially produced by humans. Therefore, the correct answer is Synthetic.

Explanation
The term "midway" suggests that the materials mentioned in the statement are neither completely natural nor completely synthetic. They are likely to be a combination of natural materials that have undergone some level of processing by humans. This implies that while they originate from nature, they have been altered or modified to some extent by human intervention.

Explanation
The ecological footprint refers to the measure of the impact that an individual or a community has on the environment in terms of their resource consumption, land use, and waste production. It provides an estimate of the amount of land and resources required to sustain their lifestyle and absorb their waste. It takes into account factors such as energy consumption, water usage, food consumption, and transportation choices. By calculating the ecological footprint, individuals and communities can become aware of their environmental impact and make more sustainable choices to reduce their footprint.

Explanation
Green design refers to the practice of creating objects and structures that have minimal negative impact on the environment. It involves using sustainable materials, energy-efficient technologies, and considering the entire lifecycle of a product or building. By incorporating green design principles, the negative environmental impact of objects and structures can be greatly reduced or eliminated. This includes reducing waste, conserving resources, minimizing pollution, and promoting a healthier and more sustainable future.

Explanation
The term "ecological footprint" refers to the amount of resources consumed by a population or individual, including the amount of gases produced. Similarly, "carbon footprint" specifically measures the amount of greenhouse gases emitted by human activities. Both terms are used to assess the impact of human activities on the environment. Therefore, the given answer is correct as it accurately describes the concept of measuring the amount of gases produced by a population.