Jawaban:

How to Make a Water Rocket

Materials:

a good plastic bottle

a nozzle

a nut

a string        

super-glue

a pump

a screwdriver

a hammer

Procedure:

First, make a hole on the bottle cap. Use a screwdriver and a (1) hammer to make the hole.  

Second, put the (2) nozzle into the hole on the bottle cap.

Then, screw the (3) nut onto the nozzle.

(4) Next, glue the nut and the bottle cap.

Then glue one end of the string on the cap side.      

After that, fill the bottle with (5) water until it is half full.

Next, screw the (6) cap back onto the bottle.  

Then pump the (7) bottle until it has enough air inside.

After that, (8) put the string around the side of the bottle cap.

Then, hold the bottle on the neck, upside down.

(9) Finally, pull the string to release the bottle cap and let the water rocket go!