Question

1. what is the gravitational force exerted on an object called? *

mass
friction
weight
air resistance

1. earth exerts a stronger gravitational force than the moon because earth has more ____________.

Explanation:

• For question 19: Weight is the gravitational force exerted on an object. Mass is the amount of matter in an object. Friction is a force that opposes motion. Air resistance is a type of friction acting on objects moving through air.
• For question 20: According to Newton's law of universal gravitation \(F = G\frac{m_1m_2}{r^2}\), where \(F\) is the gravitational force, \(G\) is the gravitational constant, \(m_1\) and \(m_2\) are the masses of two objects, and \(r\) is the distance between their centers. When comparing the Earth and the Moon (assuming similar distances from a common object for simplicity), since \(G\) and \(r\) (for a given object) are constant, a larger mass (\(m_1\), in the case of the Earth - Moon comparison) leads to a stronger gravitational force.

Answer:

1. weight
2. mass