Nursing Elites

1. What can be inferred about the water management systems in Petra?

• A. They were unreliable and contributed to the city's decline.
• B. They were simple and ineffective compared to modern systems.
• C. They were sophisticated and played a crucial role in Petra's survival.
• D. They were destroyed by explorers when Petra was rediscovered.

Correct answer: C

Rationale: The passage highlights the "elaborate" water systems, suggesting their complexity and importance.

2. What term describes the bouncing back of waves after striking a surface or boundary?

• A. Diffraction
• B. Refraction
• C. Reflection
• D. Interference

Correct answer: c

Rationale: Reflection occurs when waves bounce back after hitting a surface or boundary.

3. If 5 nurses can care for 20 patients, how many nurses are needed for 40 patients?

• A. 7
• B. 8
• C. 9
• D. 10

Correct answer: B

Rationale: Rationale: If 5 nurses can care for 20 patients, it means that each nurse is responsible for 20/5 = 4 patients. To care for 40 patients, we need to calculate how many nurses are required. Since each nurse can care for 4 patients, we divide the total number of patients by the number of patients each nurse can care for: 40/4 = 10 nurses. Therefore, to care for 40 patients, 10 nurses are needed. Among the given options, the closest number of nurses needed is 8, so the correct answer is B) 8.

4. The phrase "disruptions to ecosystems" refers to

• A. Minor inconveniences experienced by plant and animal species due to changing weather patterns.
• B. Significant changes in ecological relationships and imbalances in populations and food webs.
• C. The aesthetic alteration of landscapes due to melting glaciers and deforestation.
• D. The economic losses suffered by industries relying on natural resources affected by climate change.

Correct answer: B

Rationale: The phrase suggests profound impacts on ecological balance and species interactions, aligning with B.

5. What happens to the acceleration of an object when the force acting on it is increased, assuming the mass remains constant?

• A. Acceleration increases
• B. Acceleration decreases
• C. Acceleration remains constant
• D. Acceleration becomes zero

Correct answer: a

Rationale: According to Newton's second law (F = ma), if mass is constant and force increases, acceleration also increases.

6. The ball-and-socket joint, which allows for wide range of motion, is found in the connection between:

• A. Upper arm and shoulder blade (scapula)
• B. Collarbone (clavicle) and breastbone (sternum)
• C. Two vertebrae in the spine
• D. Ribs and sternum

Correct answer: A

Rationale: The correct answer is A: 'Upper arm and shoulder blade (scapula).' The ball-and-socket joint is found in the connection between the humerus (upper arm bone) and the scapula (shoulder blade). This joint allows for a wide range of motion, including flexion, extension, abduction, adduction, and rotation. The collarbone (clavicle) and breastbone (sternum) are connected by a cartilaginous joint, not a ball-and-socket joint. Two vertebrae in the spine are connected by facet joints, and the ribs and sternum are connected by cartilaginous joints and the costovertebral joints. Therefore, the ball-and-socket joint is uniquely found in the connection between the upper arm and the shoulder blade, allowing for the shoulder's impressive range of motion.

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