Question 4


4.1 Surface temperature increases,  oceans evaporate,  more solar energy makes living conditions more harsh 


4.2 Earliest life forms were plant-like,  released oxygen  during photosynthesis 


4.3 Protection from harmful radiation,  ensures greenhouse effect 


Question 5 5.1 Barred spiral/elliptical/irregular 


5.2 Edwin Hubble 


5.3 Distances from us to other stars is increasing in all directions  5.4 Southern Cross 


5.5 South African Large Telescope  5.6 Reflector 


(3) (3)


(2) [8]


(1) (1) (1) (1) (1)


(1) [6]


Total: 35 marks


Exemplar end-of-year exam memorandum Learner’s Book page 195–197


Question 1 1.1 Fuse 


1.2 Normal  1.3 Refraction 


1.4 A light second  1.5 Moon/stallite  1.6 Zodiac 


Question 2 2.1 A 


2.2 B  2.3 C  2.4 B  2.5 B 


146


(1) (1) (1) (1) (1)


(1) [6]


(2) (2) (2) (2) (2)


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