science

Ginda'i

Ginda'i is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Ginda'i rather than just read about it. In short: Ginda'i (also spelled Gindae) is a reservoir located in the Kilte Awula’ilo woreda of the Tigray Region in Ethiopia. The earthen dam that holds the reservoir was built in 1998 by SAERT.

Key takeaways

Ginda'i belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Ginda'i to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Ginda'i from memory before moving on to harder problems.

Reference excerpt

Ginda'i (also spelled Gindae) is a reservoir located in the Kilte Awula’ilo woreda of the Tigray Region in Ethiopia. The earthen dam that holds the reservoir was built in 1998 by SAERT.

Dam characteristics Dam height: 19.5 metres Dam crest length: 483 metres Spillway width: 23.2 metres

Capacity Original capacity: 793170 m³ Dead storage: 142405 m³ Reservoir area: 13.5 ha In 2002, the life expectancy of the reservoir (the duration before it is filled with sediment) was estimated at 20 years.

Irrigation Designed irrigated area: 54 ha Actual irrigated area in 2002: 6 ha

Environment The catchment of the reservoir is 11.16 km² large. A net erosion map for the Ginda’i catchment shows that sediment deposition occurs at the footslopes, while the maximum erosion rate (more than 150 tonnes per hectare per year) occurred on the steepest slopes. Erosion rates in the cultivated lands are often low, as in the Ginda’i catchment croplands are generally located on slopes which are less than 5% steep. The reservoir suffers from rapid siltation. Part of the water that could be used for irrigation is lost through seepage; the positive side-effect is that this contributes to groundwater recharge.

References

Worked examples

Example 1 — a first encounter with Ginda'i

Start with the simplest possible case. Write down what Ginda'i claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Ginda'i before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Ginda'i ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Ginda'i

In research: Ginda'i appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Ginda'i in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Ginda'i is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1998 establishments in Ethiopia, Agriculture in Ethiopia, Reservoirs in Tigray Region, so understanding it makes those chapters shorter.
In everyday life: Look for Ginda'i outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Ginda'i in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Ginda'i means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Ginda'i out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Ginda'i in simple terms?

Ginda'i (also spelled Gindae) is a reservoir located in the Kilte Awula’ilo woreda of the Tigray Region in Ethiopia. The earthen dam that holds the reservoir was built in 1998 by SAERT.

Why does Ginda'i matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Ginda'i?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Ginda'i.