Solar Systems Week 4 8/10-8/14. Warm Up 8/12 Where does the Earth’s energy come from? How is it used by organisms on Earth?

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Presentation transcript:

Solar Systems Week 4 8/10-8/14

Warm Up 8/12 Where does the Earth’s energy come from? How is it used by organisms on Earth?

Sun’s Energy Radiation – The transfer of energy through space by visible light, ultraviolet radiation, and other forms of electromagnetic energy. Transferred through waves. Much of the radiation is caught by the electromagnetic field of the earth, therefore it is mainly visible light that gets through the atmosphere.

Sun’s Radiation The Fusion of hydrogen nuclei to form helium gives of massive amounts of light and heat energy. That energy then travels through radiation of electromagnetic waves.

Atmosphere The Earth’s Atmosphere acts as an electromagnetic shield, which keeps all but some of the ultraviolet light and all of the visible light from reaching the Earth’s surface.

Visible Light Visible light, minus the green rays, is absorbed by the chloroplast of green plants and used in the process of Photosynthesis.

Photosynthesis Carbon Dioxide, Water, and Visible light are combined to make Oxygen, Sugar, and some heat. Oxygen can then be used by all organisms to undergo Cellular Respiration, the inverse reaction of Photosynthesis

Use of Sun’s Energy Products of Photosynthesis, Oxygen and Sugars are then used during cellular respiration of other organisms to make ATP. ATP is the usable chemical energy by which all life processes are completed.

Warm Up 8/13/15 What causes the phases of the moon? Explain.

Phases of the Moon The phases of the moon are caused by a variety of factors. The revolution of the moon causes its phase to change due to it’s location in relation to the sun. A full cycle of the moons phases is called a lunation

Lunation A full lunation as viewed from the Earth is days. It is about two days longer than a full revolution of the moon, since the Earth is also revolving the Sun as the moon revolves the Earth.

Sun’s Role in the Phases The phases of the moon are actually based off the Moon’s location relative to the Sun not the Earth. A Full Moon is when the Earth is between the Sun and the Moon A New Moon is when the Moon is between the Earth and the Sun.

New Moon Moon is between the Sun and the Earth. The Sun’s rays only light up the back side of the moon so it appears that there is no Moon in the sky!

New to Full Moon As the Moon revolves around the Earth more of the reflected light from the sun is visible on earth. As we go from New to Full we say the moon is waxing. New turns to Waxing Cresent turns to First Quarter turns to Waxing Gibbous, Turns to a Full Moon

Full Moon As the moon becomes posistioned with the Earth directly between the Sun and Moon we get a Full Moon. The Sunlight is reflecting off the half of the moon facing the Earth. This makes it look like the full moon is lit up.

Full to New Moon As the Moon revolves back around the Earth less of the reflected light from the sun is visible on earth. As we go from Full to New we say the moon is waning. Full turns to Waning Gibbous turns to Third Quarter turns to Waning Cresent, Turns to a New Moon

Face of the Moon On Earth we always see the same face of the moon. The Gravitational pull of the Sun and the Earth Holds the Moon still so that the same side is always facing the Earth! You are truly looking at the same moon as someone across the country from you!