Meaning: 'Gentle' means mild or soft, particularly in reference to the strength of the wind.

Wrong options:

• cold: 'Cold' describes a temperature and does not appropriately characterize the type of wind in this context.
• heavier: 'Heavier' is a comparative adjective that does not fit the context of describing wind intensity.
• heavy: 'Heavy' is an adjective that describes weight, which is not suitable for describing wind in this context.
• hot: 'Hot' describes temperature and does not relate to the intensity of wind.
• entire: 'Entire' means whole or complete, which does not apply to the description of wind intensity.
• land: 'Land' is a noun referring to the solid surface of the Earth, which does not fit as a descriptor for wind.

Correct answer: hot

Explanation: The term 'hot' is appropriate as it describes the temperature of the spots being referred to. It fits grammatically and contextually as it explains why the air above these spots rises.

Meaning: 'Hot' refers to a high temperature, indicating that the air above these areas is warmed by the sun.

Wrong options:

• cold: 'Cold' is the opposite of hot and does not fit the context of describing the spots that cause air to rise.
• heavier: 'Heavier' describes weight and does not relate to temperature, making it unsuitable here.
• heavy: 'Heavy' is an adjective that describes weight, which does not apply to the temperature of the spots.
• Gentle: 'Gentle' describes a type of wind, not temperature, and is therefore irrelevant in this context.
• entire: 'Entire' means whole or complete, which does not apply to the description of temperature.
• land: 'Land' is a noun and does not describe temperature, making it an inappropriate choice.

Correct answer: heavier

Explanation: The word 'heavier' fits grammatically as it describes the comparative weight of cool air in relation to warm air. This context is crucial for understanding why cool air sinks.

Meaning: 'Heavier' refers to having more weight, indicating that cool air is denser than warm air.

Wrong options:

• cold: 'Cold' describes temperature and does not relate to the weight or density of air, making it unsuitable.
• hot: 'Hot' is the opposite of heavier and does not fit the context of describing why cool air sinks.
• heavy: 'Heavy' is an adjective that describes weight but does not provide the comparative context needed in this sentence.
• Gentle: 'Gentle' describes a type of wind and does not relate to the weight of air.
• entire: 'Entire' means whole or complete, which does not apply to the description of air density.
• land: 'Land' is a noun and does not describe weight, making it an inappropriate choice.

Correct answer: entire

Explanation: The term 'entire' is appropriate as it describes the whole globe, fitting grammatically and contextually as it emphasizes the global nature of wind patterns.

Meaning: 'Entire' means whole or complete, indicating that the winds affect the whole globe.

Wrong options:

• cold: 'Cold' describes temperature and does not fit the context of describing the globe as a whole.
• heavier: 'Heavier' is a comparative adjective that does not apply to the description of the globe.
• heavy: 'Heavy' describes weight and does not relate to the concept of the globe in this context.
• Gentle: 'Gentle' describes a type of wind and does not apply to the description of the globe.
• hot: 'Hot' describes temperature and does not fit the context of describing the globe.
• land: 'Land' refers to the solid surface of the Earth and does not encompass the entire globe.