EO3: Non-Contact Forces

Front

What is a non-contact force?

Back

A non-contact force is a force that can act on an object without physical contact, such as gravitational, magnetic, and electric forces.

Front

Which force is an example of a non-contact force?

Back

Gravity is an example of a non-contact force.

Front

What is kinetic friction?

Back

Kinetic friction is the force that opposes the motion of two surfaces sliding past each other, and it requires contact between the surfaces.

Front

What materials are typically magnetic?

Back

Common magnetic materials include iron, nickel, and cobalt.

Front

What is the area surrounding a non-contact force called?

Back

The area surrounding a non-contact force is called a field.

Front

What happens when an object gains electrons?

Back

When an object gains electrons, it becomes negatively charged.

Front

What is magnetism?

Back

Magnetism is a force that can attract or repel certain materials, typically metals, and is associated with magnetic fields.

Front

What is the difference between magnetic and non-magnetic materials?

Back

Magnetic materials can be attracted by magnets, while non-magnetic materials cannot.

Front

What is an electric field?

Back

An electric field is a region around a charged object where other charged objects experience a force.

Front

What is gravitational attraction?

Back

Gravitational attraction is the force that pulls two masses toward each other, such as the Earth pulling objects toward its center.