1.waves that use matter to transfer energy 2.rhythmic disturbance that carries energy
3.waves in which matter in the medium moves in the same direction as the wave
4.example of a compressional wave
5.example of a mechanical wave
6.The matter in the medium moves up and down or back and forth at right angles to the direction the wave travels.
7.waves that do not require matter to carry energy
8.ripples on the surface of a pond
9.the matter through which a mechanical wave travels
10.vibration of vocal chords creates this

a. water wave
b. compressional waves
c. transverse wave
d. wave
e. mechanical wave
f. electromagnetic wave
g. sound wave
h .medium

HEL

1. read the following excerpt from franklin d. roosevelt's "fireside chat 19":

on the other side of the picture, we must learn also to know that guerilla warfare against the germans in, let us say serbia or norway, us; that a successful russian offensive against the germans us; and that british successes on land or sea in any part of the world strengthen our hands.

remember always that germany and italy, regardless of any formal declaration of war, consider themselves at war with the united states at this moment just as much as they consider themselves at war with britain or russia. and germany puts all the other republics of the americas into the same category of enemies. the people of our sister republics of this hemisphere can be honored by that fact.  

the true goal we seek is far above and beyond the ugly field of battle. when we resort to force, as now we must, we are determined that this force shall be directed toward ultimate good as well as against immediate evil. we americans are not destroyers — we are builders.

analyze the effectiveness of this excerpt. how does it function within the speech as a whole? how does the structure of the excerpt to convey the speech's purpose and key points? support your argument with evidence from the speech. (10 points)