ATI TEAS 7
TEAS Test 7 science
1. Which of the following is an example of aseptic technique?
- A. Washing hands with soap and water before surgery
- B. Coughing into your elbow
- C. Sharing a stethoscope without cleaning
- D. Leaving a wound dressing exposed
Correct answer: A
Rationale: Aseptic technique refers to practices that help prevent the introduction of harmful microorganisms into a sterile environment. Washing hands with soap and water before surgery is an essential component of aseptic technique as it helps reduce the number of microorganisms on the hands, decreasing the risk of introducing pathogens into the surgical site. Coughing into your elbow is a good hygiene practice to prevent the spread of respiratory infections but is not specifically related to aseptic technique. Sharing a stethoscope without cleaning can introduce microorganisms from one patient to another, compromising aseptic conditions. Leaving a wound dressing exposed can lead to contamination and infection, which is contrary to aseptic technique.
2. Which of the following numbers has the greatest value?
- A. 1.4378
- B. 1.07548
- C. 1.43592
- D. 0.89409
Correct answer: B
Rationale: To determine the number with the greatest value among the options, focus on the digit in the tenths place. In this case, 1.07548 has the highest value as it has the digit 7 in the tenths place. Comparing this to the other numbers, 1.4378, 1.43592, and 0.89409 have 4, 3, and 8 in the tenths place, respectively. Therefore, 1.07548 is the number with the greatest value as it has the highest digit in the tenths place.
3. What is the base unit for liquid volume in the metric system?
- A. Milliliters
- B. Liters
- C. Gallons
- D. Liters
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.
4. Which of the following battles occurred first?
- A. Cold Harbor
- B. Chancellorsville
- C. Atlanta
- D. Shiloh
Correct answer: D
Rationale: Shiloh occurred earlier than the other battles listed. Shiloh took place in April 1862 during the American Civil War, making it the earliest battle among the options provided. Cold Harbor occurred in June 1864, Chancellorsville in May 1863, and Atlanta in July-September 1864. Therefore, Shiloh is the correct answer. Choice A (Cold Harbor) is incorrect because it happened after Shiloh. Choice B (Chancellorsville) is incorrect because it occurred after Shiloh. Choice C (Atlanta) is also incorrect as it took place after Shiloh.
5. A book has a width of 2.5 decimeters. What is the width of the book in centimeters?
- A. 0.25 centimeters
- B. 25 centimeters
- C. 250 centimeters
- D. 0.025 centimeters
Correct answer: B
Rationale: To convert decimeters to centimeters, we use the conversion factor that 1 decimeter is equal to 10 centimeters. Setting up the proportion: 1/0.1 = x/2.5. Solving for x gives 2.5 = 0.1x, x = 25. Therefore, the width of the book in centimeters is 25. Choices A, C, and D are incorrect because they do not correctly convert decimeters to centimeters. A and D have decimal placement errors, and C has an incorrect magnitude of centimeters.
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