3. Forces That Cause Change

What is force?

• A type of energy
• A measurement of speed
• A push or pull in a particular direction
• None of the above

What can force do to an object?

• Change its shape
• Change its speed
• Change its color
• Change its direction

What is velocity?

• A scalar quantity that measures speed
• A vector quantity that measures speed and direction
• A measurement of force
• None of the above

What is the difference between elastic and plastic deformation?

• Elastic deformation causes an object to break
• Plastic deformation results in the object returning to its original shape
• Elastic deformation results in the object returning to its original shape
• Plastic deformation results in the object not returning to its original shape

What is the yield point of a material?

• The maximum stress a material can withstand without permanent deformation
• The point beyond which the material will not return to its original shape
• The point where the material breaks
• None of the above

What is the force extension curve graph used for?

• To show the relationship between force and speed
• To show the relationship between force and deformation
• To show the relationship between velocity and time
• None of the above

What happens if an elastic band is stretched beyond its yield point?

• It becomes saggy and does not return to its original shape
• It breaks immediately
• It returns to its original shape
• None of the above

What is the elastic limit of a material?

• The point where the material breaks
• The point beyond which the material will not return to its original shape
• The maximum stress a material can withstand without permanent deformation
• None of the above

What happens if a trampoline is subjected to a force that exceeds its elastic limit?

• It returns to its original shape
• It breaks
• It changes color
• None of the above

What can changes in shape do to an object's behavior?

• Alter its velocity
• Make it change direction
• Make it glow in the dark
• Make it invisible