8th Grade Semester 1 Final Review

Front

What are the two factors affecting the magnitude of the force of gravity between two objects?

Back

Mass and distance.

Front

Does gravity attract all objects towards one another?

Back

True.

Front

What is the sum of all forces acting on an object that is capable of accelerating a mass?

Back

Net force.

Front

Which has a greater impact on kinetic energy (KE): mass or velocity?

Back

Velocity.

Front

In summer, is the axis of the earth pointed towards or away from the sun?

Back

Towards.

Front

What is the formula for calculating gravitational force?

Back

F = G * (m1 * m2) / r^2, where F is the gravitational force, G is the gravitational constant, m1 and m2 are the masses, and r is the distance between the centers of the two masses.

Front

What is kinetic energy?

Back

The energy an object possesses due to its motion, calculated as KE = 1/2 mv^2.

Front

What is potential energy?

Back

The energy stored in an object due to its position or configuration, commonly gravitational potential energy, calculated as PE = mgh.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the force exerted by gravity on that mass.

Front

What is inertia?

Back

The tendency of an object to resist changes in its state of motion.