Tag Archives: energy

Ecology resources for students: Part 1

Good afternoon!

I’m back with another set of bookmarks for students and teachers. Because I’ve taught the IB Environmental systems and societies course for several years, this set of online resources is closest to my heart. Some of these links are here simply because I think they’re cool or fun. Many may also be applicable for studying biology and chemistry as well. Let’s get to it:

Happy learning!


Mr K


Renewable Energy Options for Africa

This article from ESI, “The Online Power Journal of Africa,” discusses the pros and cons of renewable energy sources across the continent. It’s a nice summary of the points made in ESS Topic 3.3 – Energy Resources. It’s also particularly relevant for us here in Tanzania, considering the seasonal difficulties TanEsCo has meeting demand for its hydroelectricity, not to mention the massive oil and natural gas deposits recently discovered offshore near Kilwa Kisiwani.

Kidatu Dam in Tanzania. Image source: www.waterpowermagazine.com

Kidatu Dam in Tanzania. Image source: http://www.waterpowermagazine.com

For continued reading and/or research into energy issues and developments in East Africa, follow this ESI eNews regional site for East Africa.

Energy and Nutrient Flows in Ecosystems

I found this presentation while looking through some stuff over at Slideshare.net, which is a pretty good resource for school notes if you haven’t found it yet. The teacher for this class includes almost everything that we need to know about the differences between the movement of energy and nutrients through and within ecosystems, respectively.

The key points I want you to remember about this topic are as follows:

  1. Energy enters, flows through, and leaves a system.
  2. Nutrients cycle repeatedly within the system.
  3. Most of the energy at any trophic level is lost before it can be used by the next trophic level.
  4. Energy is lost 3 main ways:
    • heat
    • waste (feces and tissue loss)
    • used for respiration

The video below is also fairly helpful. What I like about it is the blank energy and nutrient diagram he fills in as he moves through the ecosystem. It’s a nice approach to a possible future test question (hint, hint).

Biology – key vocabulary

proteinsimage source: filebox.vt.edu

Welcome to the biology unit, kids! I’ve added a couple of helpful documents to this post, which you will want to refer to as we move through our unit on the organization of life on Earth.

The first document, G9 Biology Vocabulary, is an outline of the major concepts in this unit. It’s basically a big list of important vocabulary words. I’ve intentionally left out the definitions, examples, and explanations, because that’s what you need to add – that’s how you learn! You should download this document and add to it as we cover different topics during the unit.

The second document, G9 Biology vocabulary matchup, is the collection of cards we used in class. You’ll find vocabulary terms and definitions organized into columns and sorted by topic. This will be a nice reference in case you miss something during a class.