Eclipse

Topics: Ultraviolet, Electromagnetic spectrum, Infrared Pages: 17 (4476 words) Published: September 7, 2013
Seeing the Invisible

A Lesson Giving Students an Opportunity to Discover Ultraviolet and Infrared Radiation Coming from the Sun

By: Sallie M. Smith Howard B. Owens Science Center for the ISTP Mission istp.gsfc.nasa.gov/istp/outreach/solar_observation.pdf istp.gsfc.nasa.gov/istp/outreach/student_booklet.pdf 1

Seeing the Invisible
- Table of Contents -

5 E’s Lesson Plan ........................................................................................................... 3 Teacher Lesson Plan ....................................................................................................... 4 Teacher Overheads ....................................................................................................... 12 Pre-Assessment Student Worksheets ............................................................................ 15 Suggested Scoring Tools .............................................................................................. 18 Product Evaluation Form ............................................................................................. 24

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5 E’s Lesson Outline

Seeing the Invisible

Grades 6-12

ENGAGEMENT
(How students attention will be captured; stimulate thinking)

Students will be instructed to make an observation of a flower (tulip) given the one stipulation that they will only be allowed to detect the parts of the plant that are green. Through observation and discussion, students will be led to understand that only seeing parts of the flower leads to an incomplete and even inaccurate understanding of its structure.

EXPLORE

Students will be shown an image of the Sun in visible light and asked to make observations. An analogy will be drawn between the flower observations and Sun observation. Given Sun product description labels, students will highlight what the products claim to protect consumers from i.e., UV radiation. Students will then be informed that the Sun emits light in all areas of the electromagnetic spectrum, not just the visible area, and will be invited to imagine what the Sun would look like if we could see it in other wavelengths, and what could we learn about its structure? Students will construct their own knowledge of the Sun emitting light above and below the visible spectrum by using UV beads to detect ultraviolet radiation coming from the Sun, and, in a second experiment, will record the temperature readings of thermometers placed in the visible and infrared region of a spectrum produced using a prism. An optional M&M Filter Activity is included in the lesson to demonstrate how filter work. Now aware that the Sun emits radiation in addition to visible light, students are invited to observe four images of the Sun at different wavelengths collected by an Extreme Ultraviolet Imaging Telescope aboard the S OH O spacecraft observing the Sun at orbital point L1. Students should note differences of structural features seen at different wavelengths. Assessment should be on-going throughout the lesson by evaluating students’ responses to questions, assessing, (1) the process of data collection, (2) the accuracy of data, (3) responses to data questions, and of course, (4) evaluating a persuasive newspaper writing assignment in which students try to convince readers that the Sun emits radiation that we cannot see. • • • “Shedding a New Light on the Universe” - Maggie Masetti. Available FREE from NASA Teacher Resource Centers. International Solar-Terrestrial Physics - website http://www-istp.gsfc.nasa.gov The Solar and Heliospheric Observatory - website http://sohowww.nascom.nasa.gov/ 3

EXPLANATION
(What students will do to construct their own knowledge of the concept)

ELABORATION
(Opportunities to extend understanding, apply to real life)

EVALUATION

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