Humidity 0 Overview Using this Resource Connecting to the Curriculum Marking Student Responses Working with Students Further Resources This task is about the moisture of air. Question a) Cold air is denser than warm air but dry air is denser than humid air. The barometric pressure would be greatest on what kind of day? Cold Hot Humid Cold and dry Hot and humid Question b) Washing done in a washing machine and hung out to dry on a warm, fine, but windless day, does not dry very well. Apart from the lack of wind, the most likely reason for the clothes not drying is ... high humidity. cold air. weak sunlight. high cloud. Task administration: This task can be completed with pencil and paper or online with some auto-marking. Copyright: Barometer image: PublicDomainPictures.com, public domain Image: J. Fisher, Photokete, permission granted for educational use in Aotearoa New Zealand classrooms. Level: 4 Curriculum info: Science, Knowledge, Material World Keywords: changes, evaporation, humidity Description of task: This task consists of two multiple-choice questions on humidity. Curriculum Links: Science capabilities The capabilities focus is brought about by the conversations you have and the questions you ask. Capability: Use evidence This resource provides opportunities to discuss using evidence to support an explanation. Science capability: Use evidence Science capabilities: Use evidence Making Better Sense: Features Answers/responses: Y9 (03/1998) a) D - Cold and dry moderate b) A - high humidity moderate Diagnostic and formative information: Common Error a) Option E (Hot and humid) chosen by 25% of students. b) Option C (weak sunlight) chosen by 22% of students. Water facts Effect of surface area on evaporation rate Where did the water go? Disappearing water The water cycle Investigating the water cycle The disappearing puddle Evaporating water
