(8-PS2-1)
It is the equal and opposite force that reacts to an action force.
This type of force causes an object's velocity to change, meaning it accelerates, decelerates, or changes direction.
What is an unbalanced force?
These are the two opposite ends of a magnet where the magnetic force is strongest.
What are poles (North and South)?
This is the only type of force that gravity can exert on matter.
This invisible area around a charged object exerts a force on other charged objects without making physical contact.
What is an electric field?
When a rolling billiard ball collides with a stationary one, this happens to the total momentum of the system.
What is it remains the same? (Conservation of Momentum)
If an object has a net force of zero acting upon it, its motion will do this.
What is stay the same? (It remains at rest or keeps moving at a constant speed).
Unlike gravity, electric and magnetic forces have the unique ability to do this to objects, rather than just pulling them in.
These two fundamental properties determine the strength of the gravitational pull between any two objects in the universe.
What are mass and distance?
When you pull two attracting magnets further apart, you are increasing this type of stored energy within the magnetic field.
What is potential energy?
According to this law, if you push a heavy wall with 50 Newtons of force, the wall pushes back on you with exactly this much force.
What is 50 Newtons?
This property of matter causes an object to resist any change in its motion, and it depends entirely on the object's mass.
What is inertia?
This type of temporary magnet is created by wrapping a current-carrying wire around an iron core.
What is an electromagnet?
If you double the distance between two planets, the gravitational force between them will do this.
What is decrease?
This object can be used to visually map out and prove the existence of an invisible magnetic field structure.
This device utilizes Newton's Third Law by expelling gas downward to propel itself upward into space.
What is a rocket?
If you apply the same force to a baseball and a bowling ball, the baseball will accelerate faster because it has less of this.
What is mass?
To increase the strength of an electromagnet without changing the power source, you can do this to the wire.
While your mass stays exactly the same on the Moon, this measurement changes because the Moon has less gravity than Earth.
What is weight?
As two objects with the same electrical charge move closer together, the potential energy in the system does this.
To design a solution that minimizes the force of a collision between two remote-controlled cars, you should increase this variable during the impact.
To plan an investigation supporting this standard, you must control these two main variables to observe changes in an object's motion.
This happens to the magnetic field lines as you move further away from a permanent magnet.
What is they spread out / get weaker?
This is why Earth's gravity is strong enough to keep the Moon in orbit, yet the much larger Sun doesn't pull the Moon away from us completely.
This type of non-contact field exists around any object that possesses mass, regardless of its size.