شرح علوم متكاملة لغات الصف الاول الثانوي لغات - الفصل الدراسي الأول
شرح علوم متكاملة اولي ثانوي لغات - ترم أول
Integrated Sciences for Grade 10 (First Year of Secondary School) - First Semester

لينك تحميل الملزمة
https://drive.google.com/file/d/1vK-yGJkjAxtRnVlwwD3HfkwcBwZkFyy-/view?usp=sharing

لينك تليجرام
https://t.me/mrahmedelbashagroup

in this Lesson:
Electromagnetic waves Are a type of waves consisting of two perpendicular fields, electric and magnetic, oscillating together in the same phase.
All electromagnetic waves of solar radiation propagate through space at a constant speed of (3 x 108 m/s) till reaching Earth.

* Solar radiation is the energy emitted from the Sun, a portion of which reaches Earth and serves as the primary source of energy on Earth.
* Solar radiation propagates as electromagnetic waves such as visible light, which represents a small part of the electromagnetic spectrum. Electromagnetic waves differ in wavelength (λ) and frequency (ν), as shown in the following diagram:

The photic zones in oceans waters
* As the depth of water increases, the intensity of light gradually decreases. This light gradient forms different light zones in the oceans, in which marine organisms are distributed according to their ability to adapt to the available amount of light. These zones are:

* In the following, we'll discuss in some detail the propagation of solar radiation in the euphotic (sunlit) zone (upper zone).

The effect of solar radiation on aquatic environments
* Solar radiation is considered a vital factor in maintaining ecological balance in aquatic environments, this is attributed to its effect on:
Water temperature and the distribution of aquatic organisms.
Photosynthesis process , which is essential for marine life, where autotrophic organisms (such as aquatic plants, algae, and phytoplankton) thrive in the surface layers of water bodies depending on the availability of sufficient sunlight to carry out the photosynthesis process.

The effect of solar radiation on water temperatures
* Solar radiation directly affects the water temperature, which in turn affects the distribution of the aquatic organisms. So, we find that in:

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