Modelling shadows 0 Overview Using this Resource Connecting to the Curriculum Marking Student Responses Further Resources This task is about looking at the lengths of shadows in relation to the position of the sun. Set up the task as shown in the diagram below. The torch must be kept in the same place. Question 2Change answer a) Turn the globe to the position where the shadow created by the "person" (blu tack) is at its shortest. Explain why this happens. a) Turn the globe to the position where the shadow created by the "person" (blu tack) is at its shortest. Explain why this happens. Question 2Change answer b) i) Turn the globe to the two positions where the person's shadow is the longest. Explain when this happens. ii) At what time(s) of day do the longest shadows occur? Question 2Change answer c) Turn the globe so that the person makes no shadow. Explain when this occurs. c) Turn the globe so that the person makes no shadow. Explain when this occurs. Task administration: Equipment Torch; blu tack; globe of the world which can turn. This task could be done orally, with pencil and paper or online (with NO auto-marking). Level: 4 Curriculum info: Science, Investigating in science, Planet Earth Keywords: astronomical systems, shadows, models Description of task: Task: Investigate the length of shadows in relationship to the sun's position. Assessment focus: interpreting a model. Curriculum Links: Science capabilities The capabilities focus is brought about by the conversations you have and the questions you ask. Capability: Interpret representations This resource provides opportunities to discuss what a model shows, and how it is the same and different from the real thing. Science capability: Interpret representations (TKI) Science capabilities: Interpret representations Answers/responses: a) When the blu tack/person is directly pointed towards the Sun. b) i) ii) When the globe is turned a 1/4 turn to right or left (from the centre position). Early morning and late evening. c) When the blu tack/person is not in sunlight/when that part of the Earth is turned away from the Sun. February shadows The shadow from the flagpole
