Lesson Summary:
The lesson explains the phenomenon of day and night at the poles and briefly introduces the reason we have different seasons. Using a globe or a sphere show the children how the fact that the earth tilts means that different hemispheres are closer to the sun as the earth revolves around it. The reading can be used as a resource for the teacher, or read by the children themselves. Activity A reinforces the facts they have been given in the reading while Activity B requires them to think more deeply about the need to adapt to living with perpetual day or night.
Objectives:
- The children will understand and be able to explain how the seasons come about.
- The children will recognize that different people have different living conditions and need to adapt to them.
Subject Area:
Science
Lesson Excerpt:
If you lived in the polar regions, which are the areas around the north and south poles, you would feel just like the child in the poem. Except that right at the poles Polar Day lasts all summer and Polar Night lasts all winter. How does this work? Well our seasons are caused by the way the earth tilts on its axis. The hemisphere which is tilted towards the sun experiences summer, while the hemisphere which is tilted away from the sun experiences winter. As the earth travels around the sun both hemispheres get a chance to tilt towards or away from the sun (hemisphere means ½ of a sphere, or ball shape – so the earth has two hemispheres).
0 Comments.