Senin, 25 Februari 2013

Water has certain properties

1. syrup, kerosene, gasoline, and oil are examples of substances ...
2. water cooled constantly going ...
3. event changes from a gas to a solid form called ...
4. the surface of still water is always ...
5. river in Borneo used to ...
6. sources of electrical energy derived from hydropower is called ...
7. when the density of objects equal to the density of water, the object will ...
8. sea water exposed to the sun will evaporate and rise to the top to form ...
9. characteristic peculiarities or irregularities in water is called ...

a. List 3 benefits of water!
b. What is an event capillarity?
c. Why do we boiled water will eventually run out?
d. Why stove oil, when we ignite a fire is lit?
e. Why fish can breathe underwater?
f. Why when drying wet clothes to dry?
g. Explain the use of water in everyday life!
h. List 3 substances that are not soluble in water!
i. How is the state of an object when floating in water?
j. If we put the sugar into the water and then we stir, the sugar will not be visible anymore. Explain that!

Key answers:
1. liquid
2. freezes into ice cube
3. crystallize
4. horizontal
5. means of transport
6. Hydropower or hydroelectric
7. float
8. clouds or overcast
9. anomalies of water.

a. as a means of traffic, as a means of conveyance (transport), as power plants
b. event water seep through small cracks
c. as the water evaporates
d. because the kerosene stove was pervasive and rising up through the wick
e. because the air dissolved in water
f. as the water evaporates on the clothes and turns into gas
g. for cooking, drinking, washing, bathing, irrigation, maintaining fish and other purposes
h. wax, oil, and asphalt
i. when the density of objects equal to the density of water
j. because the sugar is dissolved in water.

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