Answer the following question given this paragraph: Clouds are needed for precipitation. Precipitation is water that falls from the sky. This may fall as liquid water, mostly as rain . It may fall also as frozen water, such as snow. Q: What is the water that falls from the sky called? Choices: - evaporation - condensation - moisture - precipitation A:
precipitation
(Question)
Answer the following question given this paragraph: During mitosis, the newly duplicated chromosomes are divided into two daughter nuclei. Q: Newly duplicated chromosomes are divided into two daughter nuclei during what stage? Choices: - meiosis - symphysis - prophase - mitosis A:
(Answer)
mitosis
Ques: Answer the following question given this paragraph: Refracting and reflecting telescopes are optical telescopes that use lenses to gather light. Q: Refracting and reflecting telescopes are optical telescopes that use lenses to gather what? Choices: - electricity - magnetic force - sound - light A:
Ans: light
(Q).
Answer the following question given this paragraph: Digestive enzymes secreted in the acidic environment (low pH) of the stomach help break down proteins into smaller molecules. The main digestive enzyme in the stomach is pepsin , which works best at a pH of about 1.5. These enzymes would not work optimally at other pHs. Trypsin is another enzyme in the digestive system, which breaks protein chains in food into smaller parts. Trypsin works in the small intestine, which is not an acidic environment. Trypsin's optimum pH is about 8. Q: Digestive enzymes secreted in the acidic environment (low ph) of the stomach help break down what? Choices: - molecules - particles - cells - proteins A:
(A).
proteins
Ques:Answer the following question given this paragraph: The rate of radioactive decay varies from one radioisotope to another. The rate is measured by the half-life. This is the length of time it takes for half of a given amount of a radioisotope to decay. Q: How is the radioactive decay measured? Choices: - carbon dating - quarter-life - alpha emission - half-life A:

Ans:half-life
Answer the following question given this paragraph: The electrical potential difference between the two plates is expressed as , the electric field strength times the distance between the plates. The units in this expression are Newtons/coulomb times meters, which gives the final units Joules/coulomb. Voltage is an expression of the amount of potential energy per unit charge. The work done moving a charge against the field can be calculated by multiplying the electric field potential by the charge, . Q: What is it called when a charge moves against a field? Choices: - momentum - power - force - work A:
work