Place the correct letter from column B beside the correct description from column A in the spaces provided below.

Column A

A.  Radiation             B.  Respiratory System        C.  Cell membrane  

D.  Pancreas             E.  Digestive System           F.  Incandescent

G.  Fibre Optics         H.  Thermal Energy             I.  Carbon dioxide    

J.  Vacuole                K.  Stars                                 L.  Blood Vessels

M.  Cornea

Answers                                            Column B                                         

____               A technology that uses the light that is trapped in a thin wire.

____               The total amount of particle movement in a substance.

____               The kind of light that is caused by an electrical current in a light bulb.

____               This is responsible for storing food and water in a cell.                                               

____               Chemical and physical breakdown of food is the major function of this organ system.

____               When light enters the eye, the _____ focuses most of it.

____               This contains enzymes to break down materials.                     

____               The most common luminous sources of light in the sky.

____               Regulates what enters and leaves the cell.                   

____               Transports blood, gases, and nutrients/wastes.

____               Lungs, trachea, and blood vessels are the major organs of this system.

____               A greenhouse gas that humans can control the emissions of.

____               The transfer of energy by means of waves.

C.  Compare the similarities and differences of the following: 

a)  Animals and Plants Cells

b)  Weather and climate

c)  Acid and base

d)  Natural Greenhouse effect and anthropogenic greenhouse effect