NG BENG CHOO EL-B29

NG BENG CHOO (EL-B29) D 20102044762

Search This Blog

Saturday, 10 December 2011

Exercise

1.    Table 1 shows the result of heating and discontinued heating of 800 ml of water.

Heating
Discontinued heating
Time (minutes)
0
1
2
3
4
5
6
7
8
Water Temperature (  °C)
40
50
60
70
80
90
80
70
60
Table 1

(a)   Based on the result given in the table, what is the trend of change in the temperature of the water from the 1st to the 8th minute?
_________________________________________________________________________[1mark]
(b)   State an inference based on the trend of change in the water temperature in 1(a).
__________________________________________________________________________[1mark]
(c)    Based on the experiment, state what is / are
1. changed___________________________________________________________[1mark]
2. measured__________________________________________________________[1mark]

(d)   If the heating of the water is discontinued, predict the time it will take for the water to return to the temperature of 40 °C.
________________________________________________________________________[1mark]

Thursday, 8 December 2011

Exercise For Year 6

  1.       Which of the following are living things?
I   Humans      III  Animals
II   Plants        IV  Microorganisms
A.  I only         
B.  II and III only
C.  I, II and III only
D.  I, II, III and IV

2. What will be the effects on the environment if logging on hill slopes is carried out excessively?
I  Soil erosion
II  Landslide
III  Flash flood
IV  Destruction of habitats

   A.        I and II
   B.         I, II and III
   C.         II, III and IV
D.        I, II, III and IV


 
3. We can feel the movement of our chests all the time. This movement shows that humans________.
A.  grow          C.  excrete
B.  breathe       D.  reproduce

4.  Living in groups enables animals to ______.
I  look for food more effectively
II  avoid interaction among them
III  reduce competition for food
IV  defend themselves better

A.  I and IV       C.  II and IV    


 




      B.  II and III     D.  III and IV
5. Table 1 shows the population of animal P in a forest from 2007 to 2010.
  
Year
2007
2008
2009
2010
Number of P
in the forest

250

200

150

100
 
Which of the following could have caused this?
A.        Animal P has limited mating partners
B.         Animal P has stopped reproducing
C.         Animal P is threatened with extinction
D.        Animal P faces competition from other animals

Wednesday, 16 November 2011

The different food that animals eat

Do you eat like a horse? Or more like a bird? As you might expect, different animals eat different things. Some animals specialize in eating one particularly rich food source, while others eat whatever they can find. This video segment samples the diversity of feeding habits among some of the world's creatures.
video