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8th Grade Science
Forces and Motion
11. Forces
11.1 Force Types, Contact and field forces
Contact and Field Forces: How Objects Push and Pull Without Touching
Discover how forces are classified based on whether objects must touch, and explore the invisible fields that allow gravity, magnetism, and electricity to act across empty space.
What You'll Learn
Contact forces require direct physical touch between two objects.
Field forces act across empty space without any physical contact.
Gravity, magnetism, and electric force are all field force examples.
All four fundamental forces in nature are classified as field forces.
What You'll Practice
1
Students classify everyday scenarios as contact or field forces.
2
Questions test knowledge of gravity, friction, and magnetic forces.
3
Learners distinguish force types using real-world physical examples.
Why This Matters
Understanding the difference between contact and field forces is essential for analyzing how objects interact, from everyday friction to the gravitational pull that keeps planets in orbit.
This Unit Includes
Practice exercises
Learning resources
Skills
Contact Forces
Field Forces
Gravity
Magnetic Force
Force Classification
NH Curriculum Aligned