Ch4 lesson 1 textbook 10 11

This chapter is all about electrons. It is a very

strange chapter so keep an open mind. The rest of

the year will be nothing like this chapter.

This chapter interrupts our year. (But in a good way.)

It is like taking piano lessons right in the middle of making a nuclear bomb.

Keep asking yourself, “What’s the point?”

We will get

back to the

math and the

Periodic Table in a

few chapte

rs.

We are studying the “weirdness” of electrons because we use them to

make bonds for the rest of the year.

None of this will make any

sense because scientists don’t even

understand it.

What is the speed of a wave? Imagine you are on the beach watching the ocean waves go by, and you want to know the speed of

the waves. There is an island offshore with a palm tree that will serve as a convenient frame of reference. You count the number of waves that pass by the tree in one minute:

In this case, two peaks (two wavelengths) pass by the tree in one minute. Thus, the frequency is 2 wavelengths/minute. If we measure the distance between the peaks (i.e. the wavelength) we can

determine the speed of the wave:Speed of the Wave = (distance between peaks) * (frequency)

Speed of the Wave = (wavelength) * (frequency)

What is the speed of a wave? Imagine you are on the beach watching the ocean waves go by, and you want to know the speed of

the waves. There is an island offshore with a palm tree that will serve as a convenient frame of reference. You count the number of waves that pass by the tree in one minute:

In this case, two peaks (two wavelengths) pass by the tree in one minute. Thus, the frequency is 2 wavelengths/minute. If we measure the distance between the peaks (i.e. the wavelength) we can

determine the speed of the wave:Speed of the Wave = (distance between peaks) * (frequency)

Speed of the Wave = (wavelength) * (frequency)

Click on:http://wps.prenhall.com/wps/media/objects/1054/1079778/media/AADZZRQ0.swfFor a more interactive version.

Speed of the Wave = (wavelength) * (frequency)

Speed of the Wave = (wavelength) * (frequency)