Explanation

(a) Name the instruments used in measuring the following:

(i) Rainfall — Raingauge

(ii) Humidity — Hygrometer

(iii) Temperature — Thermometer

(iv) Wind — Wind vane for direction

— Cup counter anemometer for speed.

(b) With the aid of a diagram, describe the instrument used to measure rainfall. The description of instruments.

(i) Outer metal cylinder

(ii) A funnel

(iii) Luner container

(iv) Measuring jar

(c) The Rain gauge;The rain gauge is installed 30cm above the ground level to avoid water splash. The rain that falls each day is collected in the glass jar. The rain water enters the inner container/glass jar through a funnel. To prevent any water splash from entering the funnel, it is usually constructed in an open place away from trees and buildings. The rain water that falls into the container is emptied each day. It is measured in the calibrated measuring jar or read directly from the glass jar. The total rainfall for each month is added to get the monthly rainfall which is added at the end of the year to get the total rainfall for the year.

Correct Answer: A. Jugdement day

Correct Answer: A. citizens

Explanation

Civil rights are an expansive and significant set of rights that are designed to protect individuals from unfair treatment; they are the rights of individuals to receive equal treatment (and to be free from unfair treatment or discrimination) in a number of settings

Correct Answer: A. praising

Correct Answer: C. lntra-fascicular cambium

Correct Answer: A. planned and capitalist economies

Explanation

(a) 10% of bulbs are faulty, 90% are not faulty.

P(a bulb is flawless) = 90% = 0.9

(i) p(first sample is flawless and accepted) = \((0.9)^{5} = 0.59049 \approxeq 0.590\)

(ii) P(first sample of 5 bulbs contains at least one faulty bulb) = 1 - 0.59049 = 0.40951\)

Probability that the second sample of size 5 contains flawless bulbs = \((0.9)^{5} = 0.59049\)

\(\therefore\) probability that the first batch is accepted = \(0.4095 \times 0.5905 = 0.2418\)

(b) 3 black, 12 non-black. Total = 15.

p(black marble) = \(\frac{3}{15} = p = \frac{1}{5}\)

p(non- black marble) = \(\frac{12}{15} = q = \frac{4}{5}\)

\((p + q)^{10} = p^{10} + 10p^{9} q + 45p^{8} q^{2} + 120p^{7} q^{3} + 210p^{6} q^{4} + 252p^{5} q^{5} + 210p^{4} q^{6} + 120p^{3} q^{7} + 45p^{2} q^{8} + 10p q^{9} + q^{10}\)

(i) p(no black) = \(q^{10} = (\frac{4}{5})^{10} = \frac{1048576}{9765625}\)

(ii) p(black marble at most 3 times) = p(0 black marble) + p(1 black marble) + p(2 black marbles) + p(3 black marbles)

= \(\frac{1048576}{9765625} + 10(\frac{1}{5})(\frac{4}{5})^{9} + 45(\frac{1}{5})^{2} (\frac{4}{5})^{8} + 120(\frac{1}{5})^{3} (\frac{4}{5})^{7}\)

Correct Answer: C. 25.0s

Explanation

t = \(\frac{fs}{p} = \frac{20 \times 500}{0.4 \times 1000} = 25s\)

Correct Answer: C. an episode.

Explanation

(a) (i) Graph showing the relationship between fertilizer used and tomato yield. The relationship between fertilizer used and tomato yield

Scale{x-axis 2cm rep. 2 units y-axis 2cm rep. 2 units

(ii)Description of the relationship between fertilizer used and tomato yieldAs more fertilizer is applied to the tomato farm, total output (yield) first increases sharply but after a point, further addition of fertilizer results in reduction in yield of tomato.

(iii) Most appropriate quantity of fertilizer to be applied on the tomato farm - 6 bags of fertilizer

(b) Effects of subsidy withdrawal on agricultural production-Reduction in agricultural production - High cost of farm produce - Reduction in number of farmers/creates unemployment - Discourages investment in agricultural production - High cost of farm inputs

(c) Print media that could be used to disseminate information about new varieties of maize to farmers - Newspapers -Handbills -Posters -Bulletins -Magazines -Pamphlets -Journals -Periodicals -Banners -Flyers -Billboards -Newsletters -Proceeding -Leaflets

(d) Insect pests of crops

(i)MaizeStem borer - Locust Weevil - Cotton stainer - Aphid - Leaf hopper - Grasshopper - Earworm

(ii)Orange - Thrips - Red - mite - Scale insect - Aphid - Fruit borer - Caterpillar - Mealy bug - Leaf hopper - Fruit fly - Citrus Butterfly - Leaf Miner - Moth