Dust
Dust is made up of tiny particles that are found in the air and can settle on surfaces. These particles can come from a variety of sources, including dirt, pollen, skin cells, and even tiny particles from the environment.
Composition of Dust
Dust can be composed of a variety of materials, including:
- Soil particles
- Pollen
- Dead skin cells
- Animal dander
- Insect waste
- Microorganisms
Formation of Dust
Dust is formed through a combination of natural processes, including:
Effects of Dust
Dust can have various effects on human health and the environment, including:
- Respiratory issues when inhaled
- Allergies and asthma triggers for some individuals
- Reduced air quality
- Soiling and damage to surfaces and electronic equipment
Study Guide
Here are some key points to remember about dust:
- What are the common sources of dust?
- How is dust formed?
- What are the potential effects of dust on human health and the environment?
- How can dust be controlled and minimized in indoor spaces?
Understanding the composition, formation, and effects of dust is important for maintaining a healthy and clean environment.
.◂Science Worksheets and Study Guides Third Grade. Relationships among living things
Study Guide
Relationships among living things 
Activity Lesson
Relationships Among Living Things Worksheet/Answer key
Relationships among living things Worksheet/Answer key
Relationships among living things Worksheet/Answer key
Relationships among living things Worksheet/Answer key
Relationships among living things Vocabulary/Answer key
Relationships among living things Vocabulary/Answer key
Relationships among living things
Activity LessonWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyVocabulary/Answer keyVocabulary/Answer keyThe resources above cover the following skills:
LIFE SCIENCE
From Molecules to Organisms: Structures and Processes
Create representations to explain the unique and diverse life cycles of organisms other than humans (e.g., flowering plants, frogs, butterflies), including commonalities such as birth, growth, reproduction, and death.
Unity and Diversity
Construct an argument from evidence to explain the likelihood of an organism’s ability to survive when compared to the resources in a certain habitat (e.g., freshwater organisms survive well, less well, or not at all in saltwater; desert organisms survive well, less well, or not at all in woodlands).
Create models that illustrate how organisms and their habitats make up a system in which the parts depend on each other.