Elastic

The video explains the concept of elasticity, focusing on how materials return to their original shape after an external force is applied. It distinguishes between elastic and inelastic materials, highlighting that elastic materials regain their shape while inelastic ones remain deformed. Additionally, it discusses the proportional relationship between the force applied to an elastic material and the resulting deformation.

What is the primary characteristic of an elastic material?

• It changes color when stretched.

• It returns to its original shape after force is removed.

• It dissolves in water.

• It becomes harder when heated.

Which material property is described by the ability to return to its original shape after deformation?

• Density

• Viscosity

• Elasticity

• Plasticity

How does an inelastic material behave when a force is removed?

• It becomes elastic.

• It remains deformed.

• It returns to its original shape.

• It changes its color.

Which of the following statements is true about elastic materials?

• The deformation is proportional to the applied force.

• They do not change shape under any force.

• They remain deformed after the force is removed.

• They become inelastic over time.

What happens to an elastic material when the applied force is increased?

• It becomes inelastic.

• It melts.

• It changes color.

• It deforms more.