1. Shine the torch on the globe or ball. Move the torch closer or further away from the globe until you cover one side of the globe with torch light. 2. Slowly spin the globe from west to east. Notice how different parts of Earth move in and out of the light. Look for places where there will be sunset and sunrise.
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The Deep Dive
This simple demonstration replicates how the Earth rotates on its axis and orbits the sun, creating day and night across the globe. Ancient civilizations, such as the Greeks, first proposed that the Earth is round, and this concept was crucial for understanding celestial movements. Their observations laid the groundwork for later theories of light, gravity, and rotation that form our understanding of solar dynamics today. This activity provides a hands-on way to grasp the concept of time zones, which are based on the Earth's rotation. As different parts of the world enter or leave the light, they experience sunrise and sunset at different times. For instance, when it’s noon in New York, it’s already 5 PM in London! This means global communications and business have to be mindful of these time shifts to maintain effective connections across the globe.