He inenga i te rahi o te matū kei roto i tētahi mea totoka. He āhua ōrite te papatipu me te taumaha o tētahi mea i roto i ngā kōrero o ia rā, engari he rerekē ā-pūtaiao nei. E hono ana te taumaha o tētahi mea ki te tō ā-papa. Ka noho pūmau tonu te papatipu o tētahi mea ahakoa te tō ā-papa. Mēnā kei te Marama tētahi mea e noho ana, he taimāmā ake nā te mea he iti ake te tō ā-papa o reira i te tō ā-papa o Papatūānuku. Ahakoa te rerekē o te taumaha, he ōrite te papatipu.
A measure of the amount of matter in a solid body. It is similar to the weight of something in ordinary usage, but there is a scientiﬁc diﬀerence. The weight of an object depends on the force of gravity. The mass of something is the same no matter the pull of gravity. If an object is on the moon it will be lighter because the pull of gravity is less than on earth. Even though the weight is different, the mass remains the same.