Cork
Cork is a natural material that comes from the bark of the cork oak tree (Quercus suber). It is a versatile and sustainable material with many uses.
Physical Properties
Cork is lightweight, buoyant, and compressible. It has a unique cellular structure that consists of millions of tiny air-filled chambers, which give it excellent insulating properties.
Uses
Cork has a wide range of uses, including:
- Wine stoppers
- Flooring
- Wall tiles
- Soundproofing material
- Floatation devices
Study Guide
What is cork?
Cork is a natural material obtained from the bark of the cork oak tree.
What are the physical properties of cork?
Cork is lightweight, buoyant, and has a unique cellular structure with excellent insulating properties.
What are some uses of cork?
Cork is used for wine stoppers, flooring, wall tiles, soundproofing, and floatation devices.
.◂Science Worksheets and Study Guides Seventh Grade. Ecosystems, food chains and food webs
Study Guide
Ecosystems, food chains and food webs 
Activity Lesson
Ecosystems, Food Chains & Food Webs Worksheet/Answer key
Ecosystems, food chains and food webs Worksheet/Answer key
Ecosystems, food chains and food webs Worksheet/Answer key
Ecosystems, food chains and food webs Vocabulary/Answer key
Ecosystems, food chains and food webs Vocabulary/Answer key
Ecosystems, food chains and food webs Vocabulary/Answer key
Ecosystems, food chains and food webs Vocabulary/Answer key
Ecosystems, food chains and food webs Vocabulary/Answer key
Ecosystems, food chains and food webs
Activity LessonWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyVocabulary/Answer keyVocabulary/Answer keyVocabulary/Answer keyVocabulary/Answer keyVocabulary/Answer keyThe resources above cover the following skills:
LIFE SCIENCE
Ecosystems: Interactions, Energy, and Dynamics
Examine the cycling of matter between abiotic and biotic parts of ecosystems to explain the flow of energy and the conservation of matter.
Analyze and interpret data to provide evidence regarding how resource availability impacts individual organisms as well as populations of organisms within an ecosystem.
Construct an explanation to predict patterns of interactions in different ecosystems in terms of the relationships between and among organisms (e.g., competition, predation, mutualism, commensalism, parasitism).
Engage in argument to defend the effectiveness of a design solution that maintains biodiversity and ecosystem services (e.g., using scientific, economic, and social considerations regarding purifying water, recycling nutrients, preventing soil erosion).