Timed test, respond quick
which statement correctly compares radio waves and microwaves?
a: only radio waves are used in communication.
b: radio waves have a higher frequency than microwaves.
c: radio waves have shorter wavelengths than microwaves.
d: radio waves have lower radiant energy than microwaves.

The space within which a test north pole experiences a force magnetic poles 2. a powerful stream of electrons flowing high above the earth in the ionosphere electrojet 3. a concept to explain the directional nature of a magnetic field field lines 4. coil of wire designed to produce a magnetic field by a current passing through its windings ionosphere 5. that region above the earth's atmosphere where particles exist in an ionized state magnetic field 6. the extremities of a magnet where the field lines tend to converge or concentrate aurora borealis 7. a phenomenon that occurs in the northern latitudes; the northern lights solenoid