Metric Conversions for TEAS 7

Correct Answer: B

Rationale: To convert liters to milliliters, you need to know that 1 liter is equal to 1000 milliliters. So, to find how many milliliters are in 0.5 liters, you multiply 0.5 by 1000, which equals 500 milliliters. Therefore, the correct answer is B: 500 mL. Choice A (50 mL) is incorrect because it is 10 times less than the correct answer. Choice C (5,000 mL) is incorrect because it is 10 times more than the correct answer. Choice D (5 mL) is incorrect because it is 100 times less than the correct answer.

Correct Answer: B

Rationale: The correct answer is B: balance scale. A balance scale is used to measure the mass of an object by comparing it to a set of known masses. It works on the principle of equilibrium, where the object's mass is balanced by adding or removing known masses until the scale is level. Choice A, thermometer, measures temperature, not mass. Choice C, scale, is a general term and could refer to different types of scales, but a balance scale specifically measures mass. Choice D, caliper, is used to measure dimensions such as length or diameter, not mass. Therefore, the balance scale is the correct choice for measuring mass accurately.

Correct Answer: B

Rationale: To convert 0.1 liters to milliliters, you need to multiply by 1000 since there are 1000 milliliters in 1 liter. So, 0.1 * 1000 = 100 ml, which is the correct answer (B). Choice A (10 ml) is incorrect as it represents 0.01 liters, choice C (1000 ml) is incorrect as it represents 1 liter, and choice D (1 ml) is incorrect as it is too small for 0.1 liters.

Correct Answer: A

Rationale: The correct answer is A: G. The prefix "giga" represents 10^9 in the International System of Units (SI). The symbol for "giga" is a capital letter G. It is used to denote a factor of one billion. Choice B, m, represents the prefix "milli" which is 10^-3. Choice C, Gg, is not a standard representation of the prefix "giga." Choice D, g, represents the unit of mass "gram," not the prefix "giga." Therefore, the correct notation for the prefix "giga" is A: G.

Correct Answer: D

Rationale: Failed to generate a rationale after 5 retries.