Biomass
Biomass refers to organic materials that come from plants and animals, and can be used as a source of energy. This can include wood, agricultural crops, waste materials, and even algae.
Sources of Biomass
There are various sources of biomass, including:
- Wood and wood processing wastes
- Agricultural crops and residues
- Animal manure and human sewage
- Food and yard waste
- Algae
Uses of Biomass
Biomass can be used for:
- Generating electricity
- Heating homes and buildings
- Producing biofuels such as ethanol and biodiesel
- Creating biodegradable plastics
- Providing a sustainable alternative to fossil fuels
Study Guide
When studying biomass, consider the following questions:
- What are the main sources of biomass?
- How is biomass converted into energy?
- What are the environmental benefits of using biomass as an energy source?
- What are some potential drawbacks or challenges associated with using biomass?
- How does biomass compare to fossil fuels in terms of sustainability and environmental impact?
Understanding biomass is important for exploring renewable and sustainable energy sources, and its impact on the environment and society.
.◂Science Worksheets and Study Guides Seventh Grade. Elements and the periodic table
Study Guide
Elements and the periodic table 
Activity Lesson
Elements & the Periodic Table Worksheet/Answer key
Elements and the periodic table Worksheet/Answer key
Elements and the periodic table Worksheet/Answer key
Elements and the periodic table Worksheet/Answer key
Elements and the periodic table Vocabulary/Answer key
Elements and the periodic table Vocabulary/Answer key
Elements and the periodic table
Activity LessonWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyVocabulary/Answer keyVocabulary/Answer keyThe resources above cover the following skills:
Chemistry: Students will use scientific skills and processes to explain the composition, structure, and interactions of matter in order to support the predictability of structure and energy transformations.
Structure of Matter: Cite evidence to support the fact that all matter is made up of atoms, which are far too small to see directly through a microscope.
Recognize and describe that the atoms of each element are alike but different from atoms of other elements.
Recognize and describe that different arrangements of atoms into groups compose all substances.
Provide examples to illustrate that elements are substances that do not breakdown into smaller parts during normal investigations involving heating, exposure to electric current or reactions with acids.
Cite evidence to explain that all living and non-living things can be broken down to a set of known elements.