The geographic envelope and its development
Answers are for parents and teachers.
1
Write one example of each of the four parts of the geographic envelope from where you live (for example, rock, water, air, plant).
Sample: lithosphere — rock, soil; hydrosphere — river, canal; atmosphere — wind, cloud; biosphere — tree, bird.
2
Give one example of your own for the law of wholeness (for example, deforestation or a lake drying up).
Sample: if a lake dries up, air humidity around it falls, fish and birds disappear, the soil becomes salty and dust rises.
3
Ocean water is renewed once in 3 000 years. How many times in 9 000 years?
3
4
The Cenozoic Era began 66 million years ago. How many times longer ago is that than the appearance of Homo sapiens (300 thousand years ago)? (66 million ÷ 300 thousand)
220