LOM v1.0hierarchicalLOM v1.02URLhttp://portal.discoverthecosmos.eu/node/194978enWe owe every living form on Earth to sunlight, more precisely to the radiant energy transported by sunlight. In this activity, we’ll see that the energy that the Earth receives from the Sun (measured by the solar irradiance) varies in the course of time. By analyzing very recent (April 2013) solar images from the Astronomical Observatory of the University of Coimbra, the student task will be to identify the solar surface phenomena responsible for this irradiance variability. sun irradiance sunspots solar cycle faculaeplageLOM v1.0draft1.0LOM v1.0author2013-05-15Philippe KobelLOM v1.0publisherenLOM v1.0LOM v1.0creator2013-05-15Philippe KobelLOM v1.0validatorLOM v1.0browserLOM v1.0anyLOM v1.0osLOM v1.0anytext/htmlhttp://portal.discoverthecosmos.eu/node/194978LOM v1.0noLOM v1.0noLOM v1.0mixedLOM v1.0highLOM v1.0difficultLOM v1.0Inquiry-Based TeachingLOM v1.0Project-Based LearningLOM v1.0more than 2 didactic hours15-18LOM v1.0DisciplineScienceAstronomy: Solar activityAstronomy: Solar-terrestrial relationsAstronomy: Sunspots