The Technological World

What is a force?

• A change of motion

• An action

• A change of shape

• A reaction

What are the effects of a force?

• An action

• A change in shape

• A change in motion

• A deformation

A deformation is elastic when:

• The object temporarily changes shape

• The object permanently changes shape

• The object breaks

• The object remains the same

A deformation is plastic when:

• The object temporarily changes shape

• The object permanently changes shape

• The object breaks

• The object remains the same

A deformation causes a fracture when:

• The object temporarily changes shape

• The object permanently changes shape

• The object breaks

• The object remains the same

When a force pulls or stretches an object it is called:

• Compression

• Bending

• Tension

• Torsion

When a force crushes an object it is called:

• Compression

• Bending

• Tension

• Torsion

When a force acts on different parts of an object it is called:

• Compression

• Bending

• Tension

• Torsion

When a force twists an object it is called:

• Shearing

• Bending

• Tension

• Torsion

When a force cuts an object it is called:

• Shearing

• Bending

• Tension

• Torsion