ATI TEAS 7
Metric Conversions for TEAS 7 Questions
Question 1 of 5
How many milliliters are in 0.5 liters?
Correct Answer: B
Rationale: In this question, the correct answer is B) 500 mL. To understand why this is the correct choice, we need to consider the relationship between liters and milliliters in the metric system. 1 liter is equal to 1000 milliliters. Therefore, to convert from liters to milliliters, we multiply the number of liters by 1000. In this case, we are given 0.5 liters, so to find how many milliliters are in 0.5 liters, we multiply 0.5 by 1000, which gives us 500 milliliters. Now, let's analyze why the other options are incorrect: - A) 50 mL: This is incorrect because it represents the conversion of 0.05 liters to milliliters, not 0.5 liters. - C) 5,000 mL: This option incorrectly multiplies 0.5 liters by 10,000 instead of 1000 to convert to milliliters. - D) 5 mL: This option is incorrect as it represents the conversion of 0.005 liters to milliliters, not 0.5 liters. Educationally, understanding metric conversions is crucial in various fields like science, healthcare, and engineering. It is important for students to grasp the relationship between different units within the metric system to perform accurate conversions and calculations. Practice with such questions helps reinforce this fundamental skill.
Question 2 of 5
Convert 0.75 kilograms to grams.
Correct Answer: B
Rationale: To convert kilograms to grams, you need to multiply by 1000 since there are 1000 grams in a kilogram. Therefore, 0.75 kilograms is equal to 0.75 x 1000 = 750 grams. Choices A, C, and D are incorrect as they incorrectly place the decimal point and do not reflect the correct conversion from kilograms to grams.
Question 3 of 5
Convert 250 milliliters to liters.
Correct Answer: B
Rationale: To convert milliliters to liters, you need to divide by 1000 since there are 1000 milliliters in a liter. Therefore, 250 milliliters is equal to 250/1000 = 0.25 liters. Choice A, 25 liters, is incorrect as it is a magnitude higher than the correct answer. Choice C, 2.5 liters, is also incorrect as it is 10 times greater than the correct conversion. Choice D, 0.025 liters, is incorrect as it is a magnitude lower than the correct conversion.
Question 4 of 5
Convert 5,000 milligrams to grams.
Correct Answer: B
Rationale: To convert milligrams to grams, you need to divide by 1,000 since there are 1,000 milligrams in 1 gram. Therefore, 5,000 milligrams is equal to 5 grams (5,000 · 1,000 = 5). Choice A, '50 grams,' is incorrect as it results from multiplying instead of dividing. Choice C, '500 grams,' is incorrect as it incorrectly multiplies the value. Choice D, '0.05 grams,' is incorrect as it is the result of dividing by 10 instead of 1,000.
Question 5 of 5
What is the metric prefix for 10^-12 and how does it relate to meters?
Correct Answer: C
Rationale: The correct answer is C) femto- (f) = 10^-12 meters. In the metric system, prefixes indicate powers of 10 that are used to denote decimal multiples and submultiples of units. The prefix "femto-" represents 10^-15, not 10^-12. Therefore, option A and D are incorrect. The prefix "pico-" actually corresponds to 10^-12, making option A incorrect as well. Option B, "nano-" represents 10^-9, which is not the correct prefix for 10^-12. Educationally, understanding metric prefixes is crucial for accurate measurements and conversions in various fields such as science, engineering, and healthcare. It allows for easier manipulation of numbers and units in calculations. Knowing the correct prefix for a given power of 10 helps in expressing quantities in a more concise and standardized manner, enhancing communication and precision in scientific contexts.