Magnets
What do magnetic field line arrows always point toward?
South Poles
or
The direction a new North Pole would be pushed.
What do electric field line arrows always point toward?
negative charges
or
the direction of a force on a new positive charge
What needs to happen for a current to be induced through a wire WITHOUT access to a battery?
A moving magnet
2 waves have the same velocity.
The one with the longer wavelength has a ...
lower frequency
What is the lowest energy color?
red
What do magnetic field line's arrows always point away from?
North Poles
What do electric field line's arrows always point away from?
positive charges
An electric motor converts _________ KE into _________ KE.
Electrical, Mechanical
2 waves have the same frequency.
The one with the longer wavelength has a ...
faster speed
As frequency of radiation increases, it's wavelength ________, and it's energy __________.
decreases, increases
In what direction is the force between 2 north poles?
away from each other
or
repelling
In what direction is the force between opposite charges?
toward each other
or
attracting
Describe 2 things that can increase the current in a generator.
stronger magnet
more coils
faster motion
Name 2 types of longitudinal waves.
sound and P-Waves
When a laser is shined toward a wall. A boundary with 2 thin openings is place between them, creating an interference pattern. The dark regions of this pattern are regions of ______________ interference.
destructive
As 1 magnet's north pole gets closer to another magnet's south pole, their magnetic forces ....
increase
When rubbing 2 objects together, one will become negatively charged when it ...
gains electrons
If current is flowing clockwise through a solenoid, in what direction is the north pole of it's electromagnet pointing?
away from you
Seismic waves change direction as they move through different densities of earth's interior. This is called ...
refraction
Radiation at a high enough frequency can remove electrons from metal. As the number of photons increases, what else increases?
The number of electrons emitted.
As 1 magnet's north pole gets closer to another magnet's south pole, their magnetic Potential Energy ....
When rubbing 2 objects together, one will become positively charged when it ...
loses electrons
If current is moving toward you in a wire, in what direction is the magnetic field around the wire?
counter clockwise
Echolocation uses what wave property?
Reflection
Radiation at a high enough frequency can remove electrons from metal. If the frequency is increased, what else will increase?
the speed of the electrons