Elasticity

What is elasticity?

• The ability to break when stretched

• The ability to return to original shape after deformation

• The ability to change color when heated

• The ability to move quickly

Which of the following is an example of an elastic material?

• Stone

• Rubber band

• Metal rod

• Glass bottle

What happens to the atoms in a rubber band when it is stretched?

• They get closer together

• They stay in the same place

• They are pulled apart

• They disappear

Why does a balloon return to its original shape after being inflated and deflated?

• Because of its elasticity

• Because of air pressure only

• Because of Newton’s third law

• Because of gravity

Elasticity means a material will permanently change shape after being stretched.

• True

• False

Rubber bands cannot return to their original shape after being stretched.

• True

• False

What happens to the atoms in a rubber band when it is not being stretched?

• The atoms repel each other

• The atoms are in equilibrium

• The atoms pull apart