A gravitational field is a region of space around a massive object where other objects will experience a force of attraction towards the center of the mass.
A gravitational field is created by any object that has mass. The greater the mass of the object, the stronger its gravitational field will be.
Gravitational force is the actual force of attraction between two objects, while gravitational field is the region of space where that force is present. The strength of the gravitational field determines the strength of the gravitational force between two objects.
The strength of a gravitational field is measured by its gravitational field strength, which is defined as the force per unit mass at a specific point in the field. It is measured in units of newtons per kilogram (N/kg).
No, a gravitational field cannot be shielded or blocked. It will always exist as long as the object with mass is present. However, the effects of the gravitational field can be countered by other forces, such as air resistance or the force of another object.