Answer the following question given this paragraph: The time interval required for one complete wave to pass a point is called the period . During the period of the wave, an entire wavelength from one crest to the next crest passes a position. The number of waves that pass a single position in one second is called the frequency . The period of a wave and its frequency are reciprocals of each other. Q: What is the time interval required for one complete wave to pass a point called? Choices: - cycle - minute - half-life - period A:
period
(Question)
Answer the following question given this paragraph: Each silicon atom has four valence electrons it shares with other silicon atoms in a crystal. A semiconductor is formed by replacing a few silicon atoms with other atoms that have more or less valence electrons than silicon. Q: Each silicon atom shares how many valence electrons with other silicon atoms in a crystal? Choices: - five - ten - three - four A:
(Answer)
four
Ques: Answer the following question given this paragraph: Geology is the study of the solid Earth. Geologists study how rocks and minerals form. The way mountains rise up is part of geology. The way mountains erode away is another part. Geologists also study fossils and Earth's history. There are many other branches of geology. There is so much to know about our home planet that most geologists become specialists in one area. For example, a mineralogist studies minerals ( Figure below ). Q: What branch of science is the study of the solid earth? Choices: - palentology - ecology - biology - geology A:
Ans: geology
(Q).
Answer the following question given this paragraph: Q: Of all the mineral nutrients, what contributes the most to plant growth and crop yields? Choices: - oxygen - methane - silicon - nitrogen A:
(A).
nitrogen
Ques:Answer the following question given this paragraph: Absorption is the process that allows substances you eat to be taken up by the blood. After food is broken down into small nutrient molecules, the molecules are absorbed by the blood. After absorption, the nutrient molecules travel in the bloodstream to cells throughout the body. This happens mostly in the small intestine. Q: What is the process by which the substances you consume are taken up by the blood? Choices: - evaporation - filtration - digestion - absorption A:

Ans:absorption
Question: Answer the following question given this paragraph: Geothermal energy is clean and does not release greenhouse gases. Q: What type of energy is clean and does not release greenhouse gases? Choices: - natural gas - coal - lithosphere energy - geothermal energy A:
Answer:
geothermal energy