Match each item with a statement below.

A. Systems that heat water and air
B. Systems that create electricity
C. A combination of the latitude, local weather conditions, and the amount of unobstructed southern sky
D. Circulate potable water through collectors and into a storage tank from where it is piped to faucets
E. The simplest direct systems, which use a large black tank installed in a box with a sealed glass cover
F. Often referred to as thermosiphon systems


A. Solar thermal systems
B. Photovoltaic systems
C. Solar potential
D. Direct solar thermal systems
E. Batch heaters
F. Passive solar thermal systems

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Two common methods used to control the voltage applied to the motor are autotransformer control and ____.

a. triac control b. parallel impedance c. steps speed control d. diac control

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The continuous change of both amplitude and polarity of the magnetic field causes currents to be induced into the metal core material; these currents are called ____________________ currents.

Fill in the blank(s) with the appropriate word(s).

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An insulator is a material that has free electrons available.

Answer the following statement true (T) or false (F)

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The 1967 Six-Day War intensified the Arab-Israeli conflict by bringing into constant, direct conflict

A. Americans and Israelis. B. Israel and Saudi Arabia. C. Israel and the United States on the one hand and the Arabs and the Soviet Union on the other. D. the Israeli government and Jewish settlers on the West Bank. E. Israelis and Palestinians.

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