Right there at the top of the page, it says "REVIEW and reinforce".
To me, those words suggest that you've seen all of this material before ... recently, in fact ... and nothing on the page should surprise you.
1). Electrostatic (or 'electric') and magnetic fields
2). Approximately 300 million meters per second. (299,792,458 m/s)
3). Light with exactly the right FREQUENCY can knock electrons
out of their atoms, no matter how bright or dim the light is.
4). A polarizer only lets light through that's VIBRATING in one direction.
If you put another polarizer after the first one, and turn it to a different
direction, NO light can pass through both of them. "VIBRATING in one
direction" is something that waves do, not particles.
5). electromagnetic radiation
6). photoelectric effect
7). photon
8). polarized light
9). electromagnetic wave