Vocabulary
The reflection of all colors
What is white
These waves travel through a vacuum.
What are EM waves (electromagnetic)
This type of frequency (higher or lower) causes shorter wavelengths.
What is higher frequency.
Magnetism comes from moving what
What are electrons, ions, or charges
Increasing frequency causes this in wavelength.
What is decrease
Protects Earth from sun's radiation
What is the Earth's magnetic field
Converts mechanical energy into electrical energy using induction
What are generators
You can increase the magnetic field around a wire if you do what?
Increase the number of coils
What is a region in space near a magnet or electric current in which magnetic forces can be detected?
What a magnetic field
A magnetite possessing polarity is this
What is a lodestone
The movement of charged particles through a material
What is electricity
Accidentally discovered electrical fields generate magnetic fields.
Who is Hans Oersted
The direction of a magnetic field around a wire is determined by what
What is the direction of current
In which direction do magnetic field lines run?
What is north to south
Does gravity depend on magnetism?
What is"no"
Physical phenomenon produced by the motion of electric charge
What is magnetism
A current flowing through a wire produces a circular magnetic field where?
What is outside the wire
The greater the force that produced the wave, the greater the __________________ of the wave and the greater the energy carried by the wave.
What is amplitude.
Gravity depends on what?
What is mass
Black is the _____________ of all colors in the spectrum.
What is absorption
When movement is used to create electricity
What is induction
Who decided that if an electric current creates a magnetic field, then a magnetic field should create an electric current?
Who is Faraday
These types of waves can travel through solid, liquid, gas, and vacuum.
What are radio waves
All atoms have an electric charge- true or false?
Why?
What is false?
Because an atom is neutral- has same number electrons and protons
Where would you experience strongest gravitational force- top of a mountain, at sea level, deep sea diving?
What is deep sea diving