newtons laws 1
newtons laws 2
electromagnets 1
electromagnets 2
random
100
Newton's 3rd law states this, "For ...
for every action there is an opposite but equal reaction
100
You are thrown off the front of a 4 wheeler when it runs into a fence. This is an example of which law of motion?
newtons first law
100
A material that is able to transfer heat and electricity easily
conductor
100
This is the part of a magnet where magnetic force is the strongest.
the poles
100
What is an insulator?
Electric currents cannot move freely through materials called insulators.
200
This is a force of resistance between 2 objects
friction
200
what does newtons second law state
F = M * A Force = Mass x Acceleration
200
What happens when to the poles when a magnet is broken in half?
the two new magnets with have both a north pole and a south pole
200
A complete path through which electric charges can flow
an electric circuit
200
what is the SI unit for force?
newtons
300
This is the natural tendency of objects to keep on doing what they're doing.
inertia
300
You run into your friend while skating and both of you fall in opposite directions. This is an example of which law of motion?
newtons third law of motion
300
Surround a magnet and never cross.
the magnetic field
300
This part of the atom gives it a magnetic field
electron
300
What are the three features of an electric circuit?
energy source, conductor, device
400
The baseball went farther than the basketball when your classmate hit them with an aluminum bat. This is an example of which law of motion?
newtons second law
400
this term means the push or pull exerted on an object
force
400
why are electromagnets more beneficial than regular magnets?
they can be turned on and off
400
Add more coils to the solenoid, wind coils closer together are two ways to do this.
increase the strength of the electromagnet
400
This is one form of the equation that represents Newton's Second Law of Motion.
What is F=ma, a=F/m, or m=F/a.
500
This is the acceleration of an object that weights 56 kg is pushed by an unbalanced force measuring in at 140 N. (HINT: You MUST have the correct units in order to get the points!!!)
2.5 m/s^2
500
What is the speed of an object in a specific direction?
velocity
500
This is the rock that is magnetic
what is a lodestone
500
is this piece of iron going to act as a magnet? why or why not?
no, because the electric domains are not facing the same direction
500
what are the two types of electric currents?
direct current (DC) and alternating current (AC)