ELECTRIC FORCES
Name the two types of electric charges and which one "moves."
Describe how like poles and opposite poles behave when placed next to each other
Like - repel
Opposite - attract
What is an electromagnet and what is one's purpose?
Magnet with an electric field or vice versa...makes a stronger material/force
If I decrease the # of electric charge present, how is my overall force affected?
It would decrease.
Type of animal as a pet when I was a kid
Cat
What is electric current and where can you find it?
In a circuit...it is the movement or flow of electrons
Using the idea of magnets, describe how you know there is a magnetic field without actually being able to see the field lines.
Watch the two magnets interact with the other poles...
What is a conductor and give an example
It allows electrons to move easily through it. Many metals!
I rub a balloon on my hair. When I touch the balloon to the wall, it sticks there. WHY?
Balloon = negatively charged. IT will attract the positive charges in the neutrally charged wall...+charge comes from the atoms.
Orange
How can you increase the current in a circuit
Lower temp, material (copper is best), shorter wire, thicker wire, more voltage
I have a large pile of paper clips in front of me. I take a magnet and am able to pick up 5 paper clips. Name at least 2 changes I could make that would guarantee I pick up at least 10 paper clips on the next try.
Increase magnet size and add an electric current
Name two ways to DECREASE the strength of an electromagnet
Decrease # of loops, decrease voltage
Is it possible to observe electric or magnetic forces without seeing the electric or magnetic field itself? Prove it by describing an example from class. (Think: labs/sims...)
You would see the effect!
What time did I run my half marathon in?
1:41
Describe or draw how an electric field is arranged if you were looking at one positive and one negative charge.
Field goes away from a positive charge and towards a negative charge.
Where is the magnetic field the strongest and how do you know if you were looking at a model of the field?
Near the poles...lines are close together
Why do you sometimes get shocked when you touch things? Be specific as it relates to electric forces and static electricity.
Build up of electrons...wants to be back in static equilibrium
What word ("______" relationship) can we use to describe the relationship between force of a magnet and distance?
Inverse
What events did I run in HS? Name 2 of the 5.
mile, 4x800, open 800, 400, 4x4.
What determines how strong the electric force is? (This about the field hockey sim...)
The amount of charge present and the distance between them
Describe or draw a magnetic field.
Arrows pointing away from the North and toward the South
Why are electrons able to "move" when we think about static electricity and static discharge?
Valence electrons...outermost shell of atoms
Name THREE metals that are magnetic and 1 that is not
3 - iron, nickel, cobalt
1 - aluminum
When watching any game, what do I always root for?
A GOOD GAME