Magnetism
Magnetism is a force that can attract or repel objects. It is caused by the motion of electric charges in atoms. Magnets have two poles, called the north pole and the south pole. Like poles repel each other, and opposite poles attract each other. Magnetism is a fundamental force of nature and plays a crucial role in various everyday devices, such as electric motors, generators, and compasses.
Key Concepts
- Magnetic Field: A region around a magnet where the magnetic force is exerted. It is strongest near the poles of the magnet.
- Magnetic Poles: Every magnet has a north pole and a south pole. They are the points where the magnetic force is the strongest.
- Ferromagnetic Materials: Substances that can be magnetized and are strongly attracted to magnets, such as iron, nickel, and cobalt.
- Magnetic Force: The force of attraction or repulsion between magnets or magnetic materials.
- Electromagnetism: The interaction between electricity and magnetism, which allows for the creation of electromagnets and is the basis of many modern technologies.
Study Guide Questions
- What causes magnetism?
- What are the two poles of a magnet?
- Explain how like poles and opposite poles of magnets interact with each other.
- Give examples of ferromagnetic materials.
- How is magnetism related to electricity in the context of electromagnetism?
- Discuss the applications of magnetism in everyday life.
[Magnetism] Related Worksheets and Study Guides:
.◂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.