10 Questions
What determines how a body changes shape or size when external forces act on it?
Elasticity
Which type of stress is defined as the restoring force per unit area perpendicular to the body’s surface?
Normal stress
Which type of body returns to its original configuration immediately and completely after a deforming force is removed?
Elastic body
What are the forces between a body’s atoms or molecules that determine how it changes shape or size?
Intermolecular forces
What is the inability of a body to return to its original size and shape after a deforming force is removed?
Plasticity
Which materials are given as examples of nearly elastic materials?
Quartz and Phosphor bronze
What is defined as the ratio of the internal force produced when a substance is deformed to the area over which this force acts?
Stress
What are intermolecular forces?
Forces exerted by neighboring molecules on each molecule
What type of forces are atomic forces with a short range?
Elastic forces
What does plasticity refer to in terms of a body's response to external forces?
Inability to return to original size and shape
Explore the concepts of intermolecular forces, which are the forces exerted by neighboring molecules on each molecule in a solid, and elasticity, the ability of a body to return to its original configuration when deforming forces are removed. Understand how these forces at the atomic and molecular level affect the shape and size of a body under external forces.
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