Forces and Structures Vocabulary

Fill in the blank: __________ is the force created without touching another object.

• Non-contact Force

• Contact Force

• Dynamic Load

• Static Load

Answer explanation

A non-contact force acts at a distance without physical contact, such as gravity or magnetism. In contrast, contact forces require direct interaction. Therefore, the correct answer is 'Non-contact Force'.

Which term means *any push or pull motion*?

• Structure

• Force

• Load

• Magnitude

Answer explanation

The term 'Force' refers to any push or pull motion acting on an object. It is a fundamental concept in physics that describes interactions that can change the motion of an object, making it the correct choice.

Which term describes *something with a definite size, shape, purpose, and that can hold a load*?

• Structure

• Static load

• Force

• Point of application

Answer explanation

The term 'Structure' refers to an object that has a definite size, shape, and purpose, and is designed to hold a load. This distinguishes it from other options like 'Static load' or 'Force', which do not fit this definition.

Which type of force *acts on a structure from outside*?

• External force

• Non-contact force

• Internal Force

• Contact Force

Answer explanation

The correct answer is 'External force' because it refers to forces that act on a structure from outside, such as wind, weight, or seismic activity, impacting its stability and integrity.

Which load *does not change in size, position, or direction*?

• Dynamic load

• Static load

• Contact force

• External force

Answer explanation

A static load remains constant in size, position, and direction, unlike dynamic loads that vary over time. Therefore, the correct answer is static load.

Which load *can change when acting on a structure (e.g., wind, snow)*?

• Static load

• Dynamic load

• Force

• Structure

Answer explanation

Dynamic loads, such as wind and snow, can vary in magnitude and direction, affecting a structure differently over time. In contrast, static loads remain constant, making dynamic loads the correct choice for this question.

What is the *size of a force* called?

• Point of application

• Magnitude

• Direction

• Load

Answer explanation

The size of a force is referred to as its 'magnitude'. This term quantifies how strong the force is, distinguishing it from other characteristics like direction or point of application.

What is the *location where a force touches a structure*?

• Direction

• Point of application

• External force

• Magnitude

Answer explanation

The correct answer is 'Point of application' because it specifically refers to the location where a force is applied to a structure, distinguishing it from other terms like direction, external force, and magnitude.

Which type of force is created when *two objects touch*?

• Contact force

• Non-contact force

• Static load

• Dynamic load

Answer explanation

A contact force is generated when two objects touch each other, resulting in interactions like friction or tension. This distinguishes it from non-contact forces, which act at a distance.

Which type of force happens *without touching another object*?

• Static load

• Contact force

• Non-contact force

• External force

Answer explanation

A non-contact force acts on an object without physical contact, such as gravitational or magnetic forces. In contrast, contact forces require direct interaction between objects.