Metric Conversions for Nursing

Correct Answer: B

Rationale: The correct answer is B: International System of Units (SI). This is because the SI system is the internationally recognized standard for units of measurement. It is based on seven base units, from which all other units are derived. It provides a consistent and coherent framework for measurements across different fields of science and technology. Choice A (International Measurement System) is incorrect because the official name does not include the word "measurement." Choice C (Metric Unit System) is incorrect because while the metric system is a component of the SI system, it does not encompass all the units used in the SI system. Choice D (Measurement System of Units) is incorrect as it does not accurately reflect the comprehensive nature of the SI system.

Correct Answer: B

Rationale: To convert from kilograms to grams, you multiply the value in kilograms by 1000 since there are 1000 grams in one kilogram. Therefore, 0.0345 kg * 1000 = 34.5 grams. Choice B (34.5 grams) is correct. Choices A, C, and D are incorrect because they do not correctly convert kilograms to grams. Choice A is off by a factor of 10, choice C is off by a factor of 100, and choice D is off by a factor of 1000.

Correct Answer: A

Rationale: To convert mg to ml, we need to know the density of the substance. Assuming water density, 1 mg = 1 ml. Therefore, 0.3 mg is equivalent to 0.3 ml. Other choices are incorrect because they do not correspond to the correct conversion factor or are off by a factor of 10.

Correct Answer: A

Rationale: The correct answer is A: centimeter. 'cm' stands for centimeter in the metric system. 'Centi' is a prefix that means one hundredth, so centimeter represents one hundredth of a meter. Choice B, cubic meter, is incorrect because 'cm' does not refer to volume. Choice C, cord, is a unit of measurement for stacked firewood and is not related to 'cm.' Choice D, centi, is a prefix used to indicate one hundredth, but it is not the complete unit itself.

Correct Answer: A

Rationale: To convert liters to ounces, we need to know that 1 liter is equal to 33.814 ounces. Therefore, 0.5 liter would be 0.5 * 33.814 = 16.907 ounces. Rounding to two decimal places, the correct answer is 16.91 oz (choice A). Choices B, C, and D are incorrect as they do not accurately represent the conversion of 0.5 liter to ounces.