Genius Generation Academy

1. Define the following terms :

• Soil structure
• Soil texture
• Soil consistency
• Soil porosity
• Bulk density

2. Of what use is the soil triangle?

3. Describe any three methods that can be used to determine soil texture

4. With the aid of a diagram describe soil profile

5. Explain how the following can help to maintain soil structure
• Zero tillage
• Application of manure
• Crop rotation

Osamakhala ndi mtima okaikila pa zinthu chonde.

Taonani anzanu omwe analipila K3,500 yao akuphunzira zikuwathekela,

Lembetselani abale anu, mwana wanu ngakhale nzanu olo inuyo ngati mukufuna kulemba mayeso ndipo ndukutsimikizilani kuti mudzakhoza bwino.

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𝐒𝐔𝐁𝐉𝐄𝐂𝐓 : 𝐂𝐇𝐄𝐌𝐈𝐒𝐓𝐑𝐘

𝐓𝐎𝐏𝐈𝐂 : 𝐖𝐀𝐓𝐄𝐑

a) Identify natural sources of water.

b) Decribe the water cycle.

c) Describe the physical properties of water.

d) Explain the importance of water.

e) Describe water hardness and its effects.

f) Describe methods used to remove water hardness.

g) Describe sources, effects and prevention of water pollution.

h) State impact of human activities on the atmosphere.

𝐂𝐎𝐌𝐏𝐔𝐓𝐄𝐑 𝐒𝐓𝐔𝐃𝐈𝐄𝐒

𝐈𝐍𝐓𝐑𝐎𝐃𝐔𝐂𝐓𝐈𝐎𝐍 𝐓𝐎 𝐂𝐎𝐌𝐏𝐔𝐓𝐄𝐑𝐒

• Describe why computers are important

• Explain how computers work

• Explain the difference between computer hardware and computer software

• Describe what an operating system is

• Identify the operating system you have on your own computer and phone.

• Explain office productivity and communications software.

• Start up and shut down computers properly

• Use the mouse and keyboard to complete tasks on the computer
• Identify the different groups of keys on the computer

• Create, open, save, and manage files and folders

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𝐅𝐨𝐫𝐦 3 𝐏𝐡𝐲𝐬𝐢𝐜𝐬.

𝐓𝐨𝐩𝐢𝐜 : 𝐎𝐬𝐜𝐢𝐥𝐥𝐚𝐭𝐢𝐨𝐧 𝐚𝐧𝐝 𝐖𝐚𝐯𝐞𝐬

1. Define amplitude.

2. Explain why the amplitude of a vibrating spring decreases with increase in time.

3. The frequency of a wave is 200 Hz. Calculate the period (T) of a wave.

4. A straight wave front is produced by a vi****or in a ripple tank.

a. What is the wavelength of the ripples if there are 10 complete waves in a distance of 50 cm?

b. Calculate the frequency of the ripples if 10 complete waves were produced in a minute.

5. Define :
a. Compression
b. Rarefaction
c. Crest
d. Trough

6. With the aid of well labeled diagrams, discuss the differences between transverse
and longitudinal waves.

7. Explain how you can demonstrate transverse and longitudinal waves.

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