Natural Resources
100: What is a natural resource?
A natural resource is any material or substance found in nature that is used by living things.
100: What physical property makes copper useful for wires?
Copper is useful for wires because it conducts electricity well.
100: How can clear-cutting affect the environment?
Clear-cutting can lead to habitat loss and soil erosion.
100: Name a common synthetic material.
A common synthetic material is plastic
100: What might happen if a resource is overused?
If a resource is overused, it can become depleted and harm ecosystems.
200: Name two living natural resources.
Two living natural resources are trees and fish.
200: Name a chemical property of fuels.
A chemical property of fuels is that they can burn to release energy.
200: What is selective cutting?
Selective cutting is the removal of specific trees to minimize environmental impact.
200: What is polyethylene made from?
Polyethylene is made from petroleum.
200: Give an example of a short-term effect of pollution.
A short-term effect of pollution is water contamination.
300: What is one example of a nonliving natural resource?
An example of a nonliving natural resource is water.
300: Give an example of a composite material.
An example of a composite material is concrete.
300: What does it mean for a resource to be renewable?
A renewable resource is one that can be replenished naturally over time.
300: What property makes nylon suitable for climbing ropes?
Nylon is strong and elastic, making it ideal for climbing ropes.
300: Describe a long-term consequence of deforestation.
A long-term consequence of deforestation is loss of biodiversity.
400: How do plants and animals provide materials?
Plants provide materials like wood and cotton, and animals provide materials like wool and leather.
400: Describe a property of fiberglass.
Fiberglass is strong and lightweight, making it useful for construction.
400: Why might a resource be considered nonrenewable?
A resource is nonrenewable if it cannot be replaced as fast as it is used.
400: Describe how synthetic materials can be tailored for specific uses.
Synthetic materials can be designed to have specific properties like flexibility or strength.
400: How do synthetic materials impact the environment?
Synthetic materials can pollute the environment if not properly disposed of.
500: Explain the difference between renewable and nonrenewable resources.
Renewable resources can be replaced in a short time, while nonrenewable resources take millions of years to form.
500: How does the chemical makeup of natural resources affect their use?
The chemical makeup of natural resources determines how they can be processed and used.
500: Describe a tradeoff involved in using natural resources.
Using natural resources often involves balancing benefits and environmental impacts.
500: Why are OLEDs important in technology?
OLEDs are important in technology because they produce bright, efficient, and flexible displays.
500: Explain the cycling of matter and energy in an ecosystem.
Matter and energy cycle through ecosystems, ensuring nutrients are reused by living things.