Lunar Eclipse

Science — First Preparatory

Applications and examples from life

Comparison aspect	Main idea	Keywords
Model experiment	we use a lamp for the Sun a large ball for the Earth and a small ball for the Moon. We line up the three objects with the Earth in the middle and we move the small ball into the shadow of the large ball. This represents a lunar eclipse	lamplargeballEarth
Time between two full moons	if a full moon occurs at the start of a month the next full moon comes about 29.5 days later and the one after that another 29.5 days later. The time between two full moons after two lunar cycles is 2 × 29.5 = 59 days	occursstartmonthnext
Safe viewing	a lunar eclipse can be watched with the naked eye or with binoculars without any danger because the reflected moonlight is faint. A solar eclipse however must not be viewed without suitable eye protection	lunareclipsewatchednaked

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