Die plantegroei van die wêreld is in
vyf groot biome verdeel:
Die Woudbioom
Tropiese woude.
Gematigde woude.
Bladwisselende woude.
Naaldwoude.
Mediterreense woude (Sclerophyll-bosse)
Savannebioom
Grasveldbioom
Woestynbioom
Toendra en ysveldbioom
Onthou!
Op talle plekke op aarde is die oorspronklike omgewing reeds gewysig of vernietig deur die mens.
2. Oppervlakverdeling van verskillende biome
Aktiwiteit 1:
Om ‘n sirkelgrafiek te teken en die biome se omvang daarop voor te stel
[lu 1.5]
Gebruik die tabel as verwysing.
Hoofbiome van die wêreld
Bioom
Oppervlakte(miljoene km2)
Persentasie
Woude
52,3
40,1
Savanne
21,8
16,7
Grasvelde
8,8
6,8
Woestyne
33,8
25,9
Toendra
13,7
10,5
Teken ‘n sirkelgrafiek en dui daarop aan watter deel (segment) van die hele sirkel (360
o ) elke bioom beslaan. Gebruik die persentasie van elke bioom om dit te bepaal. Gebruik ‘n gradeboog om elke bioom as ‘n sektor van die sirkel in te teken.
My sirkelgrafiek van die verskillende biome van die wêreld
Bereken die segment in grade soos volg:
Woude
:
×
= 144,36
o
Savanne
:
Grasvelde
:
Woestyne
:
Toendra en ysvlaktes
:
Watter bioom bedek die grootste oppervlakte?
Watter bioom bedek die kleinste oppervlakte?
DIE WOUDBIOOM
‘n Woud is ‘n groot stuk grond wat natuurlik met bome bedek is. In sekere woude sluit die hoë boomkruine dig teen mekaar aan en verhoed dat die sonstrale tot op die grond kan deurdring. Op ander plekke is die bome wyer uitmekaar en sonlig word gedeeltelik deurgelaat.
Die belangrikste van die soorte woude is die
tropiese reënwoud . Hierdie woude word naby die ewenaar (in die trope) gevind waar dit die hele jaar warm is, met ‘n baie hoë reënval. Die meeste van die soorte bome in die tropiese reënwoude is breëblaar-, immergroen bome. Ons vind ook baie soorte palms en varings hier. Daar woon relatief min mense in tropiese reënwoude, omdat die plantegroei so dig is dat dit moeilik is om in die woude te beweeg.
In die
bladwisselende woude met boomsoorte soos eik, okkerneut, wilg en populier, verloor die bome hul blare gedurende die winterseisoen, terwyl
gematigdeimmergroen woude in gebiede met reën dwarsdeur die jaar byvoorbeeld baie dennebome het wat as gevolg van die feit dat hul dennebolle dra, boldraende (keëldraende) bome genoem word. In hierdie tipe woude vind ons baie verskillende soorte insekte, reptiele, spinnekoppe en voëls. Die bladwisselende en gematigde woude kom voor in gebiede wat van die digsbevolkte in die wêreld is (Noord-Amerika, Europa en Asië). Deur die eeue was mense nog altyd afhanklik van woude vir skuiling, kos, hout vir huise, wapens en energie.
Aktiwiteit 2:
Om die uitwerking van digte bevolking op natuurlike woude te bespreek
[lu 1.1]
Bespreek in julle groepe die uitwerking wat die digte bevolking op die natuurlike woude kan hê en hoe die natuur beskerm kan word. Skryf ‘n kort verslag na aanleiding van jou groep se bevinding.
Naaldwoude kom hoofsaaklik tussen 50°N en 70°N voor en is aangepas om die lang, koue winters en kort somers te oorleef.
Questions & Answers
A golfer on a fairway is 70 m away from the green, which sits below the level of the fairway by 20 m. If the golfer hits the ball at an angle of 40° with an initial speed of 20 m/s, how close to the green does she come?
A mouse of mass 200 g falls 100 m down a vertical mine shaft and lands at the bottom with a speed of 8.0 m/s. During its fall, how much work is done on the mouse by air resistance
Chemistry is a branch of science that deals with the study of matter,it composition,it structure and the changes it undergoes
Adjei
please, I'm a physics student and I need help in physics
Adjanou
chemistry could also be understood like the sexual attraction/repulsion of the male and female elements. the reaction varies depending on the energy differences of each given gender. + masculine -female.
Pedro
A ball is thrown straight up.it passes a 2.0m high window 7.50 m off the ground on it path up and takes 1.30 s to go past the window.what was the ball initial velocity
2. A sled plus passenger with total mass 50 kg is pulled 20 m across the snow (0.20) at constant velocity by a force directed 25° above the horizontal. Calculate (a) the work of the applied force, (b) the work of friction, and (c) the total work.
you have been hired as an espert witness in a court case involving an automobile accident. the accident involved car A of mass 1500kg which crashed into stationary car B of mass 1100kg. the driver of car A applied his brakes 15 m before he skidded and crashed into car B. after the collision, car A s
can someone explain to me, an ignorant high school student, why the trend of the graph doesn't follow the fact that the higher frequency a sound wave is, the more power it is, hence, making me think the phons output would follow this general trend?
Nevermind i just realied that the graph is the phons output for a person with normal hearing and not just the phons output of the sound waves power, I should read the entire thing next time
Joseph
Follow up question, does anyone know where I can find a graph that accuretly depicts the actual relative "power" output of sound over its frequency instead of just humans hearing
Joseph
"Generation of electrical energy from sound energy | IEEE Conference Publication | IEEE Xplore" ***ieeexplore.ieee.org/document/7150687?reload=true
A string is 3.00 m long with a mass of 5.00 g. The string is held taut with a tension of 500.00 N applied to the string. A pulse is sent down the string. How long does it take the pulse to travel the 3.00 m of the string?
