Porosity is the measure of void space in a known volume of rock.
Ko te pae hemahema te inenga o te wāhanga hemahema o te toka.
One of the many outcomes of the geothermal activity is the pumice found washed up on the lake shore. Pumice is formed when gas bubbles get trapped in the rapidly cooling magma during a volcanic eruption.
Ko tētahi o ngā tini putanga o te hanga hanawhatu ko te pungapunga ka pae atu ki ngā tahatika moana. Ka āhuatia ake i te rarau o ngā mirumiru hau i roto o te nukutoto e mātaotao tere ana i muri i te hūnga puia.