Examining Global Weather Pattern | PDF - Free Printable
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Step-by-step solution for: Examining Global Weather Pattern | PDF
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Show Answer Key & Explanations
Step-by-step solution for: Examining Global Weather Pattern | PDF
Let's go through the questions and answers on this worksheet about global wind patterns, based on the content provided.
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Answer: *He needed to get to the NE trade winds.*
Explanation:
Columbus knew that the northeast trade winds blow consistently from the northeast toward the southwest in the tropics (around 0° to 30°N latitude). These winds are reliable and strong enough to carry ships westward across the Atlantic Ocean. However, if he had sailed directly west from Europe (which is at higher latitudes), he would have encountered westerly winds blowing from the west, which would push his ship back east—making it difficult or impossible to cross the ocean.
By sailing south along the coast of Africa, Columbus could reach the tropical region where the northeast trade winds dominate. Once there, he could use these winds to sail westward across the Atlantic to the Americas. This route was crucial for efficient and successful transatlantic voyages during the Age of Exploration.
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Answer: *Prevailing winds*
Explanation:
The term "prevailing winds" refers to the dominant wind direction in a particular region over time. These winds are consistent due to global atmospheric circulation patterns influenced by the Earth’s rotation, temperature differences, and pressure systems.
For example:
- In the tropics: Northeast trade winds (in the Northern Hemisphere)
- In mid-latitudes: Westerlies (blowing from west to east)
These prevailing winds were essential for navigation and trade routes during the 15th–19th centuries.
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Answer: *convection*
Explanation:
Winds are created by convection currents in the atmosphere. The Sun heats the Earth unevenly—equatorial regions receive more direct sunlight and become warmer than polar regions.
This causes:
- Warm air near the equator to rise (because it's less dense).
- Cooler air from higher latitudes to move in to replace it.
- The rising warm air flows toward the poles, cools, sinks, and returns toward the equator.
This continuous cycle of rising and sinking air due to temperature differences is called convection. It drives large-scale atmospheric circulation and creates wind patterns.
> Note: The diagram labeled *"Convection on a Motionless Planet"* shows this simple model. But because Earth rotates, the Coriolis effect deflects these winds, creating the actual complex wind belts like the trade winds and westerlies.
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| Question | Answer | Explanation |
|--------|--------|------------|
| 1 | He needed to get to the NE trade winds | To access favorable winds for crossing the Atlantic |
| 2 | Prevailing winds | Most common wind direction in a region |
| 3 | Convection | Heat-driven movement of air due to temperature differences |
✔ All answers are correctly filled in on your worksheet! Great job!
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Question 1: Why did Columbus sail south along Africa before he sailed west to the Americas?
Answer: *He needed to get to the NE trade winds.*
Explanation:
Columbus knew that the northeast trade winds blow consistently from the northeast toward the southwest in the tropics (around 0° to 30°N latitude). These winds are reliable and strong enough to carry ships westward across the Atlantic Ocean. However, if he had sailed directly west from Europe (which is at higher latitudes), he would have encountered westerly winds blowing from the west, which would push his ship back east—making it difficult or impossible to cross the ocean.
By sailing south along the coast of Africa, Columbus could reach the tropical region where the northeast trade winds dominate. Once there, he could use these winds to sail westward across the Atlantic to the Americas. This route was crucial for efficient and successful transatlantic voyages during the Age of Exploration.
---
Question 2: What do we call winds from the most common wind direction?
Answer: *Prevailing winds*
Explanation:
The term "prevailing winds" refers to the dominant wind direction in a particular region over time. These winds are consistent due to global atmospheric circulation patterns influenced by the Earth’s rotation, temperature differences, and pressure systems.
For example:
- In the tropics: Northeast trade winds (in the Northern Hemisphere)
- In mid-latitudes: Westerlies (blowing from west to east)
These prevailing winds were essential for navigation and trade routes during the 15th–19th centuries.
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Question 3: Winds are heat flow by _________.
Answer: *convection*
Explanation:
Winds are created by convection currents in the atmosphere. The Sun heats the Earth unevenly—equatorial regions receive more direct sunlight and become warmer than polar regions.
This causes:
- Warm air near the equator to rise (because it's less dense).
- Cooler air from higher latitudes to move in to replace it.
- The rising warm air flows toward the poles, cools, sinks, and returns toward the equator.
This continuous cycle of rising and sinking air due to temperature differences is called convection. It drives large-scale atmospheric circulation and creates wind patterns.
> Note: The diagram labeled *"Convection on a Motionless Planet"* shows this simple model. But because Earth rotates, the Coriolis effect deflects these winds, creating the actual complex wind belts like the trade winds and westerlies.
---
Summary:
| Question | Answer | Explanation |
|--------|--------|------------|
| 1 | He needed to get to the NE trade winds | To access favorable winds for crossing the Atlantic |
| 2 | Prevailing winds | Most common wind direction in a region |
| 3 | Convection | Heat-driven movement of air due to temperature differences |
✔ All answers are correctly filled in on your worksheet! Great job!
Parent Tip: Review the logic above to help your child master the concept of global wind patterns worksheet.
