HOW TO MAKE A ROCKET
Did you know that you can ma...

Question

HOW TO MAKE A ROCKET
       Did you know that you can make a rocket powered by water and air? Okay, it won't reach the stars, but it should soar high up into the air and since it can't get far, you can easily find it and lauch it again!
      You will need:
·      Empty plastic bottle with push-pull cap and large soda bottle
·      Long, slim stick
·      Strong tape
·      Coloured cardboard
·      Sand
·      Pump, with conical plastic noozle
How to make:
1.      Tape the stick to the side of the smaller bottle, with the neck of the bottle facing down. Make a nose cone and fins from cardboard, and tape them to the bottle to make it look the part.
2.      Next, build your launch pad. Half hill the big soda bottle with sand so that it stands upright and is stable. If it's not, try partially burying the base in the ground.
3.      Turn the rocket nose down and fill it one third full with water. Screw on the cap. Pull the stopper open and push the conical plastic nozzle of the pump into the hole. It must be a tight fit.
4.      Carefully turn your
5.      , 2014rocket upright and insert the stick into the soda bottle. Start pumping. As you pump, air pressure will build up in the top part of the rocket above the water.
6.      Suddenly the air pressure will blow the pump nozzle out of the stopper and the water will blast out to propel the rocket high up into the air. Stand back or you could get a bit wet.
Adopted from: john woodward, necessary skill and then some … new York, dorling Kindersley limited
Why do you need to put fins on the side of the bottle rocket?
Select one:
a. To make it look good when launched
b. To give strong push to the rocket bottle
c. To make it stable when launched
d. To provide enough room for air pressure
e. To give it much power when launched

N. Nadzifah · Accepted Answer

Hai Nicholas! Kakak bantu jawab, ya.

Jawabannya adalah A. To make it look good when launched.

Yuk, kita bahas!

Soal menanyakan alasan kita memerlukan sirip pada roket botol.

Sirip digunakan untuk membuat roket tampak bagus ketika diluncurkan. Hal ini sejalan dengan kalimat "Make a nose cone and fins from cardboard, and tape them to the bottle to make it look the part." Artinya, "Buat kerucut hidung dan sirip dari karton, dan rekatkan ke botol agar terlihat seperti satu bagian."

Jadi, jawabannya adalah A. To make it look good when launched.

Mau pemahaman lebih dalam untuk soal ini?

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