exercises science

Exercises of Science

For study at home

Name               :

List Number    :

Answer the following question correctly !

1.   1.   Look at the following food web !

Write the five food chains from this food web !

2. 

2.      a. owl               d. green plant               g. jackal

b. rabbit           e. snake                       h. lion

c. mouse          f. goat                          i.eagle

Make a food web from this animals !

33.   Compare the mechanical digestion and chemical digestion !

44.   Mention 3 the gastric juice in the stomach and explain the function !

55.  Compare between fixed pulley, moveable pulley and compound pulley !

66.    Why the strongest magnetic effort at the both of poles of magnetic ?

77.  Why the taste of rice will be sweet if we chew at long time ?

88.   What should you do to keep our bone healthy ?

  9.      Compare the building substance and regulating substance in our body !

110.  Macth the picture with simple plane !

a. incline plane

b. lever class 1

c. lever class 2

d. incline plane

11. Give sign of the part of fulcrum, effort and load of this pictures!

 

112.  what do you know about the function of lipase enzyme, amylase enzyme and trypsin enzyme that produced by pancreas gland !

113.  Find the force and mechanical advantage of it ! (just number 10 and 9)

 

114.   

Find the force that needed to move the ball to up and mechanical advantage of it!

115.  Compare between ferromagnetic, paramagnetic and diamagnetic !

116.   

From the picture, what are the part of iron become north pole and south pole ? (attention to the position of electric source)

117.  What will happen with iron if we add the power of electric source in the process of electromagnetic to make magnet ?

118.  Mention three of  the using of magnet in our daily activity !

119.  What the vitamin that you should consume to keep the healthy of our skin ?

220.  What do you know about “empat sehat lima sempurna” food ?