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waves
more waves
it's electric
magnets
Vocab
100
a wave that causes a medium to vibrate at right angles to the direction in which the wave travels
What are transverse waves
100
the rate at which a wave's energy flows through a given unit of area
What is intensity
100
a property that causes subatomic particles such as protons and electrons to attract or repel each other
What is an electric charge
100
regions where the magnet's force is strongest
What are magnetic poles
100
a device that changes a force
What is a machine
200
the distance between a point on a wave and the same point on the next cycle of the wave
What is wavelength
200
Light acts like a wave, a particle, or both?
What is both
200
charges can be transferred by what three things?
What is friction, contact, and induction
200
the area surrounding Earth that is influenced by Earth's magnetic field
What is the magnetosphere
200
an upward force acting on an object in a fluid
What is a buoyant force
300
wavelength X frequency
What is speed of waves
300
The intensity of light (increases, decreases) as photons travel farther from the source
What is decreases
300
the opposition to the flow of electric charges in a material
What is resistance
300
a region that has a very large number of atoms with aligned magnetic fields
What is magnetic domain
300
a measure of how hot or cold an object is compared to a reference point
What is temperature
400
the more energy a wave has, the greater is its...
What is amplitude
400
Gamma rays have a high ....
What is frequency
400
a device that converts chemical energy into electric energy
What is a battery
400
when you cut a magnet in half, what happens to the poles?
What is each half will have its own north and south pole because the domains will still be aligned
400
hydroelectric, solar, geothermal, wind, and biomass are all examples of what
What are renewable energy resources
500
the time required for one complete cycle of a periodic mtion
What is period
500
microwaves also carry _____ _____ conversations
What is cell phone
500
potential difference is also called...
What is voltage
500
permanent magnets are not really permanent because _____ and a ____ _____ can realign the domains
What is heat and jarring impact
500
Energy resources can be conserved by reducing ___ ____ and by increasing the _____ of energy use
What is energy needs and efficiency