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What Is Permafrost?
V&V Books Vicens Vives Organización
- 313 visitas
This permanently frozen ground is beginning to thaw as Earth?s climate warms.
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About our planet
EduBook Organización
- 1832 visitas
2.1. The earth's layers The Earth is a rocky, almost spherical planet. Its radius is 6373 kilometres. There is a lot of activity inside the Earth. This activity is evident in the crust in the form…
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Science at NASA Goddard: Education Resources
Patricia Ruiz Estudiante
- 1 lo usan
- 14256 visitas
The Sciences and Exploration Directorate is the largest Earth and space science research organization in the world. Its scientists advance understanding of the Earth and its life-sustaining environment,…
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Calculate. The nature of light (2)
EduBook Organización
- 4020 visitas
Calculate how long it takes for solar light reflected by the Moon to reach the Earth. There is a distance of 384000 km between the Earth and the Moon. It will take s.
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The Solar System
Tiching explorer Organización
- 1 lo usan
- 5751 visitas
Didactic sequence (PDF file) designed to help us explore the Solar System. We compare the Sun, Earth and Moon. The study the Earth movements and explain day and night. The resource includes a teacher's guide.
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Quick revision
EduBook Organización
- 2741 visitas
It takes the Earth one year to complete a revolution of the Sun. The Earth is tilted at an angle on its axis. This causes the different seasons of the year.
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Greenhouse effect
EduBook Organización
- 1615 visitas
Water vapour and carbon dioxide are involved in the greenhouse effect. The atmosphere acts like a greenhouse. The atmosphere holds part of the heat radiated from the Earth. This keeps the Earth's…
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Moon phases
Tiching explorer Organización
- 3 lo usan
- 20622 visitas
In this resource we explore the phases of the moon by comparing the Moon, the Earth and the Sun.
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