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AfilCa [17]
3 years ago
9

Using a named example, evaluate the effects of a large-scale irrigation scheme (6 marks)

Geography
1 answer:
Strike441 [17]3 years ago
7 0

Answer:

· Irrigation schemes are a necessity in many countries as they supply the countries with sufficient water to produce food to meet their increasing food demand (Fanadzo, 2012).In South Africa, the Vaalharts Irrigation Scheme (VHIS) is a large irrigation scheme utilising water from the Vaal River via numerous gravity fed canals ().The return flow from the VHIS enters the Harts River (via numerous ...

Explanation:

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The attack on __________________ sent
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A pearl Harbor. that was when we went from staying neutral to entering the war
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3 years ago
What is ghe difference between insulation and terrestrial radiation <br>​
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Answer:

Insolation is the amount of solar radiation that reaches the earth's surface through shortwaves. The earth also radiates heat energy like all other hot object. This is known as terrestrial radiation. The annual mean temperature on the surface of the earth is always constant.

Explanation:

The energy emitted by the sun is known as solar radiation. The incoming solar radiation to the earth is known as insolation. Radiation from the earth is called terrestrial radiation.

Answer:

Solar radiation is all the radiant energy emitted by the sun. Solar irradiance is the power per unit area received from the Sun in the form of electromagnetic radiation measured in space or at the Earth's surface. Isolation is the total solar radiation that reaches the earth's surface.

5 0
3 years ago
Read 2 more answers
This is the name for a category of trade barriers that a country may impose on another country or countries.
Flauer [41]
These are all matching questions
1. Sanction. Countries may place restrictions between each other if they can not come to an agreement that benefits both.
2. Embargo. Example- The U.S. and Cuba have had an embargo. Neither country will trade with the other.
3. Quota. This allows only a certain amount of a product to come into a place. This may be a good thing if a substance is illegal or if the substance or product could somehow be used for the wrong reasons.
4. Subsidy. Sometimes the government will help farmer's by giving them money to plant certain crops. This helps both  the economy and the farmer.
5. (Protective)Tariff
6. Boycott. People could boycott a store, if they do not agree with company's beliefs. An example would be Target allowing Transgenders into women's restrooms.
8 0
3 years ago
The altitude of Polaris measured by an observer at the Tropic of Cancer is 1) 15° 2) 23.5° 3) 66.5° 4) 90°
9966 [12]

Answer: 23.5\°

Explanation:

The Tropic of Cancer is one of the parallels (imaginary line around the Earth parallel to the equator) located in the northern hemisphere (currently its latitude is 23.43672\° \approx 23.5\°).

It is called "Cancer" because a long time ago, when the summer solstice occurred in the northern hemisphere (on June 20th or 21st), the Sun was in the constellation Cancer (the crab).

Now, if we were just in the North Pole, Polaris would by exactly over our heads (90\° over the horizon), but as we go south and find the Tropic of Cancer parallel, Polaris altitude will be approximately at an angle of 23.5\° over the horizon.

Hence, the altitude of Polaris measured by an observer at the Tropic of Cancer is 23.5\°.

8 0
3 years ago
Read 2 more answers
Suppose that two stars in a binary star system are separated by a distance of 60 million kilometers and are located at a distanc
olya-2409 [2.1K]

Answer:The angular seperation is \theta =3.6\times 10^{-4}

Explanation:

For two objects separated by a distance 's' and at a distance 'd' from the observer the angular separation ignoring the physical effects is given by

\theta =\frac{s}{d}

In the given question

s=60\times 10^{6}km

d=180 light years

We know that in 1 light year there are 9.5\times 10^{12}km

Using the calculated values we get

\theta =\frac{60\times 10^{6}}{9.5\times 10^{12}}\\\\\theta = 6.315\times10^{-6}radians

Since π radians equals 180 degrees thus we have

\\\\\theta =\frac{6.315\times 10^{-6}\times 180}{\pi }degrees=3.6\times 10^{-4}degrees

8 0
3 years ago
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