Convert 34.5 grams to kilograms (kg).

Correct Answer: A

Rationale: To convert grams to kilograms, divide by 1,000 since there are 1,000 grams in a kilogram. Therefore, 34.5 grams · 1,000 = 0.0345 kilograms. The correct answer is 3.45 kg (not 3.45 grams, which is the amount given in the initial question). Choices B and C are incorrect as they do not involve the conversion from grams to kilograms. Choice D is also incorrect as it presents the value in grams instead of kilograms.

Correct Answer: B

Rationale: The correct answer is B: Liters. In the metric system, liters are the base unit for liquid volume. Milliliters, though a metric unit, are a smaller unit of volume and not the base unit. Gallons, on the other hand, are part of the imperial system and not a metric unit for volume. Option D is a duplicate of option B, making it incorrect.

Correct Answer: B

Rationale: The correct answer is B) France. The metric system was developed in France during the French Revolution in the late 18th century. The French Academy of Sciences played a significant role in creating the system of measurement that we now know as the metric system. This answer is correct because historically, France is recognized as the birthplace of the metric system. Option A) Germany is incorrect because the metric system did not originate in Germany. While Germany did adopt the metric system later on, it was not the country where it was developed. Option C) Italy is incorrect because Italy also did not play a role in the development of the metric system. Italy, like many other countries, eventually adopted the metric system, but it was not the country of origin. Option D) Spain is incorrect because Spain was not where the metric system was developed. Like other countries, Spain eventually adopted the metric system but did not have a hand in its creation. Understanding the historical context of the metric system's development is essential for students studying for the TEAS exam. Knowing the origins of the metric system helps students appreciate its significance and understand why it is used universally in scientific and mathematical fields today.

Correct Answer: B

Rationale: The prefix 'centi' means 0.01, which is one-hundredth of the base unit. For example, 1 centimeter is equal to 0.01 meters. Choice A (0.1) is incorrect as it represents 'deci,' which means one-tenth. Choice C (0.001) is incorrect as it represents 'milli,' which means one-thousandth. Choice D (1) is incorrect as it is not a valid interpretation of the prefix 'centi.' Therefore, the correct answer is B.

Correct Answer: B

Rationale: A balance scale is specifically designed to measure the mass of an object in grams or kilograms. It works based on the principle of balancing the unknown mass against a known mass. A thermometer is used to measure temperature, not mass, so choice A is incorrect. Choice C, 'scale,' is a bit vague and can refer to different types of scales, but a balance scale is the specific instrument used for measuring mass. Choice D, 'caliper,' is used for measuring dimensions such as length, width, or thickness, not mass.