HOW CAN WE USE OPTICS TO MAXIMIZE FOOD PRODUCTION? Grade 10 Science Activity

Food availability is limited in some regions of the world for many reasons, such as access to natural resources (sunlight, space, water, soil). Due to urbanization, access to fresh fruit and vegetables in urban areas is becoming more limited. How do we feed our communities and ensure food sustainably in an urban landscape?

In this inquiry-based activity, students will design and build a model of a greenhouse using mirrors and/or lenses that can be used to grow food all year. They will use their knowledge of optics to make their greenhouse more efficient (i.e., optimal temperature for plant growth).

*This activity can be used as a Course Culminating Activity as it allows students to demonstrate their proficiency in the following areas:

    Cells and Tissues (plants and plant growth)
    Chemical Reactions (pH of soil and acid-base reactions)
    Light and Optics (reflection and refraction through mirrors and lenses)
    Climate Change (influence of CO2 and temperature upon growth of plants)

INQUIRY FOCUS:
How can we use optics to maximize food production?

Keywords:
Reflection, refraction, pH, CO2, temperature, mirrors, lenses, plant growth

Written by DIANA NAUMOVSKI

This activity is part of STAO’s Connex Inquiry Resource Series

Click here to go to the complete resource

What is the Crater-Dome Illusion?

In interpreting space or aerial photos, it’s important to notice where the source of light is originating. Noticing the light source is what helps you determine whether an object is a depression like a bowl, or a projection above ground such as a mound or dome.

Click here to download the complete article…..

Do Glasses Ruin Your Eyesight?

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Sources:
https://www.aao.org/eye-health/tips-p…
http://www.aoa.org/patients-and-publi…
http://www.bbc.com/future/story/20140…
https://www.ncbi.nlm.nih.gov/pubmed/9…
https://www.ncbi.nlm.nih.gov/pubmed/1…
https://www.ncbi.nlm.nih.gov/pubmed/2…
https://www.newscientist.com/article/…
https://www.ncbi.nlm.nih.gov/pmc/arti…
http://www.mayoclinic.org/diseases-co…
http://hyperphysics.phy-astr.gsu.edu/… Continue reading

How 3D holograms work

Holograms are photographic recordings of 3D scenes. Unlike a camera, which captures one view through a small viewer focused by a lens, holograms capture an entire light field which allows them to recreate the 3D scene. Shimmery 2D projections, like pre-recorded Pepper’s ghost illusion, are often confused with 3D holograms.