Nursing Elites

1. What happens to the potential energy of an object when it is lifted higher above the ground?

• A. Potential energy decreases
• B. Potential energy remains the same
• C. Potential energy increases
• D. Potential energy becomes zero

Correct answer: C

Rationale: When an object is lifted higher above the ground, its potential energy increases because the higher the object is lifted, the greater its potential energy due to the increased distance from the ground. This is in accordance with the formula for gravitational potential energy, which is PE = mgh, where m is the mass of the object, g is the acceleration due to gravity, and h is the height above the reference point.

2. Which of the following is NOT a greenhouse gas?

• A. Carbon Dioxide
• B. Methane
• C. Oxygen
• D. Water Vapor

Correct answer: C

Rationale: Rationale: A) Carbon Dioxide: Carbon dioxide is a greenhouse gas that is released into the atmosphere through various human activities such as burning fossil fuels and deforestation. B) Methane: Methane is another greenhouse gas that is released from sources like livestock, landfills, and natural gas production. C) Oxygen: Oxygen is not considered a greenhouse gas. It is a vital component of the Earth's atmosphere that is necessary for respiration and combustion. D) Water Vapor: Water vapor is also a greenhouse gas that plays a significant role in the Earth's climate system by trapping heat in the atmosphere. Therefore, the correct answer is C) Oxygen, as it is not a greenhouse gas.

3. Which division of the nervous system is responsible for the "fight or flight" response, preparing the body to respond to stressful situations?

• A. Somatic nervous system
• B. Autonomic nervous system
• C. Peripheral nervous system
• D. Central nervous system

Correct answer: b

Rationale: The correct answer is B: Autonomic nervous system. The autonomic nervous system controls involuntary bodily functions, including the 'fight or flight' response. This response is crucial for survival, triggering the body to prepare for action in stressful situations by increasing heart rate, dilating pupils, and releasing adrenaline. The somatic nervous system (A) controls voluntary movements, the peripheral nervous system (C) connects the central nervous system to the rest of the body, and the central nervous system (D) consists of the brain and spinal cord, overseeing all bodily functions but not directly involved in the 'fight or flight' response.

4. Which property of a wave remains constant when it crosses a boundary between two different media?

• A. Frequency
• B. Wavelength
• C. Amplitude
• D. Speed

Correct answer: d

Rationale: The speed of a wave remains constant when it crosses a boundary between two different media, although its direction may change.

5. The process of a liquid changing into a gas is called:

• A. Evaporation
• B. Boiling
• C. Condensation
• D. Sublimation

Correct answer: A

Rationale: Evaporation occurs at any temperature, while boiling only occurs at the boiling point of the liquid.

6. Which of the following is an example of an unsaturated fatty acid?

• A. Stearic acid
• B. Palmitic acid
• C. Oleic acid
• D. Butyric acid

Correct answer: C

Rationale: Oleic acid is an unsaturated fatty acid, containing at least one double bond in its hydrocarbon chain. The other choices are saturated fatty acids.

Similar Questions