which of the following is most different from the others
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ATI TEAS 7

ATI TEAS 7 Science Practice Test

1. Which of the following is most different from the others?

Correct answer: B

Rationale: The correct answer is B, 'Stomach.' The stomach is an organ of the digestive system responsible for breaking down food through mechanical and chemical digestion. In contrast, the thyroid, intestines, and pancreas are glands. The thyroid gland regulates metabolism through hormone secretion, the intestines aid in digestion and nutrient absorption, and the pancreas secretes digestive enzymes and hormones. Therefore, the stomach is functionally different from the other options as it is an organ involved in digestion, while the others are glands with specific secretory functions.

2. What is the difference between constructive and destructive interference of waves?

Correct answer: B

Rationale: Constructive interference and destructive interference are two phenomena that occur when waves interact. Constructive interference leads to an increase in wave amplitude when two waves meet in phase, resulting in the alignment of peaks and troughs. This alignment results in the combined wave having a higher amplitude. On the other hand, destructive interference causes a decrease in amplitude as two waves meet out of phase, leading to their cancellation. When peaks align with troughs, they cancel each other out, resulting in a lower overall amplitude. This difference in effect on wave amplitude distinguishes between constructive and destructive interference. Choice A is incorrect because it does not specify the direction of change in amplitude for each type of interference. Choice C is incorrect as both constructive and destructive interference can occur in various types of waves, not affecting them differently based on wave type. Choice D is incorrect because while the relative phase of waves does determine the interference type, it is the amplitude that is affected by constructive and destructive interference, not the wave speed.

3. Which law of motion explains the behavior of rockets in space?

Correct answer: C

Rationale: The correct answer is Newton's Third Law. Newton's Third Law states that for every action, there is an equal and opposite reaction. In the case of rockets in space, the action is the expulsion of gas from the rocket engines, and the reaction is the forward motion of the rocket. This law explains how rockets are able to propel themselves forward in the vacuum of space. Choices A and B are incorrect because Newton's First Law (inertia) and Second Law (F=ma) do not directly explain the behavior of rockets in space. Choice D is incorrect as Newton's Third Law specifically addresses the principle behind rockets' motion in space.

4. What is the molarity of a solution made by dissolving 4.0 grams of NaCl into enough water to make 120 mL of solution? The atomic mass of Na is 23.0 g/mol, and Cl is 35.5 g/mol.

Correct answer: B

Rationale: To find the molarity, first calculate the moles of NaCl. Moles of NaCl = 4.0 g / (23.0 g/mol + 35.5 g/mol) = 0.068 mol. Next, use the formula for molarity: Molarity = moles of solute / liters of solution. Molarity = 0.068 mol / 0.120 L = 0.57 M. Therefore, the molarity of the solution is 0.57 M. Choice A, 0.34 M, is incorrect as it does not match the calculated molarity. Choice C, 0.034 M, is incorrect as it is a decimal point off from the correct molarity. Choice D, 0.057 M, is incorrect as it does not match the calculated molarity of 0.57 M.

5. Which pronoun correctly replaces the phrase Sarah and me in the sentence: 'Jessica invited Sarah and me to the party, but I forgot to respond to her.'

Correct answer: B

Rationale: The correct answer is 'B: Us.' In the sentence, 'Jessica invited Sarah and me to the party,' 'Sarah and me' serve as the object of the verb 'invited.' Therefore, the pronoun 'us' is the correct choice to replace 'Sarah and me' as the object pronoun. Choice A, 'We,' is a subject pronoun and does not fit in this context. Choice C, 'Ours,' is a possessive pronoun and is not appropriate for replacing the object pronoun 'Sarah and me.' Choice D, 'Myself,' is a reflexive pronoun, which is not suitable for this sentence where an object pronoun is needed.

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