ATI TEAS 7
Scientific Reasoning
1. A new material is claimed to be stronger than steel. You design an experiment to test this claim. What is the MOST important control variable?
- A. The size of the material samples.
- B. The temperature at which the test is conducted.
- C. The force applied to the material.
- D. The color of the material.
Correct answer: A
Rationale: The size of the material samples is the most important control variable because it ensures that the comparison between the new material and steel is fair and accurate. By keeping the size consistent, any differences in strength can be attributed to the material composition rather than variations in sample size. Controlling for size helps eliminate confounding variables and increases the reliability of the experiment results. Temperature, force applied, and color are not as critical for directly testing the strength comparison between the new material and steel.
2. Which property of a wave determines its energy?
- A. Wavelength
- B. Amplitude
- C. Frequency
- D. Velocity
Correct answer: b
Rationale: Amplitude is directly related to the energy carried by a wave - higher amplitudes correspond to higher energy waves.
3. A patient weighs 180 pounds. What is their weight in kilograms (1kg = 2.2lbs)?
- A. 68kg
- B. 75kg
- C. 82kg
- D. 90kg
Correct answer: C
Rationale: Divide the weight in pounds (180) by the conversion factor (2.2lbs/kg).
4. What is the best way to punctuate the dialogue "Are you coming?" she asked. "Maybe," I replied.
- A. "Are you coming?" she asked? "Maybe," I replied.
- B. "Are you coming?" she asked. "Maybe," I replied.
- C. "Are you coming?" she asked, "Maybe," I replied.
- D. "Are you coming?" she asked, "Maybe," I replied.
Correct answer: B
Rationale: Each speaker's words need quotation marks, and the question mark should go inside the closing quotation mark of the question.
5. What is the muscular sac in the female body that nourishes and protects a developing fetus during pregnancy?
- A. Ovary
- B. Fallopian tube
- C. Uterus
- D. Vagina
Correct answer: C
Rationale: The correct answer is C: Uterus. The uterus, also known as the womb, is a muscular sac in the female reproductive system where a fertilized egg implants and develops into a fetus during pregnancy. It provides nourishment, support, and protection to the developing fetus until birth. The ovaries produce eggs, the fallopian tubes transport eggs to the uterus, and the vagina is the birth canal and the organ of sexual intercourse, but the uterus is specifically responsible for nurturing and protecting the developing fetus.
6. Which element is found in water and is crucial for biological functions like nerve impulses and muscle contraction?
- A. Sodium
- B. Potassium
- C. Calcium
- D. Magnesium
Correct answer: A
Rationale: Sodium plays a key role in maintaining electrolyte balance and transmitting nerve impulses, affecting both muscles and nerves
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