Static Friction
Static friction is the force that resists the initiation of sliding motion between two surfaces that are in contact and at rest relative to each other. It occurs when an object is at rest on a surface and you apply a force to try to move it.
Factors Affecting Static Friction
The static frictional force depends on the nature of the surfaces in contact and the force pushing the surfaces together. The rougher the surfaces, the greater the static frictional force. Additionally, the force required to initiate motion is directly proportional to the force holding the surfaces together.
Study Guide
- What is static friction? Explain with an example.
- What factors affect static friction?
- How does the roughness of surfaces affect static friction?
- What is the relationship between the force pushing the surfaces together and the static frictional force?
- How does static friction differ from kinetic friction?
- Describe a real-life scenario where static friction plays a crucial role.
◂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.