Make a Fun & Easy Balloon Rocket in Your Backyard


Let’s make a balloon rocket with issues you’ve gotten round the home to discover Newton’s Third Legislation. This easy science experiment balloon experiment is a rocket that may be constructed in your yard or on the playground with simply piece of string or fishing line, a water bottle, tape, straw and a balloon. Youngsters of all ages will love this science exercise together with older children. I’m doing it with preschoolers at the moment.

Let’s Make a Balloon Rocket At the moment!

Balloon Rocket for Youngsters

My children are fascinated by all issues outer area and actual rockets (even when it doesn’t immediately relate to Star Wars).  At the moment we’re bringing NASA into our yard by means of the magic of fishing line, straws and balloons.  

It is rather like Apollo 13 solely with out the hazard.

Associated: Science projects for kids

What Is Newton’s Third Legislation?

Sir Isaac Newton is understood for his three legal guidelines of movement which was printed many, a few years in the past in 1686. His first regulation is about an object at relaxation, his second regulation is about how power equals mass instances acceleration and his third regulation of movement is:

For each motion, there’s an equal and reverse response.

Sir Isaac Newton

Let’s construct a balloon rocket to discover how one motion (the total balloon’s air escaping) creates an other way (the balloon rocket transferring)!

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Methods to Make a Balloon Rocket

Provides Wanted to Construct a Balloon Rocket

Instructions to Make a Balloon Rocket

Get your provides collectively and reduce the ingesting straws into smaller items.

Step 1

String your fishing line between two objects in your yard 80 to 100 toes aside tying one finish of the string to the safe object.

Make a balloon rocket step 1 - string up the fishing line or cotton string and lace the straw pieces on before tying the end of the fishing line or end of the string to the tree or pole
Thread the straw items on the tip of the string earlier than tying at one finish.

Step 2

Earlier than you connect the second finish of string, thread the fishing line by means of two of the straw items to allow them to slide on the road.

Balloon rocket water bottle - make a balloon rocket step 3 - attach the cut up water bottle piece to the straw piece with tape
Safe the water bottle ring to the straw piece with tape.

Step 3

Take the water bottle and reduce off every finish so that you’re left with a 3-4 inch ring. Tape this ring onto one of many straw segments.

Step 4

Subsequent get your balloons.

Be aware:   Please be taught from my mistake. After I went to the shop for lengthy balloons  I purchased those which might be for making balloon animals. After I obtained residence I spotted that these are unattainable to explode with no pump of some type. I wanted larger balloons! So, from right here on out, I’m exhibiting you the way to do that with spherical balloons which received’t be almost as efficient as conventional lengthy balloons or inflated balloon animal ones!

Balloon Rocket with balloons - two balloons - one is on the inside of the water bottle ring and the other is on the outside to create a two step propulsion for rocket
The 2 balloons will create a two step propulsion for the balloon rocket flight!

Step 5

Blow up one balloon after which maintain it within the ring not letting the air escape whilst you put a second balloon in place.

If executed with the fitting balloons and higher coordination, the second might be positioned in order that it stops the air escape from the primary. Every balloon will maintain totally different quantities of air.

Balloon Rocket launch with two balloons - final step of building a balloon rocket
10, 9, 8, 7, 6, 5, 4, 3, 2, 1…Blast Off!

Balloon Rocket Launch

Launch the second balloon….the air escapes! The balloon rocket strikes! We watched the rocket fly!


The second balloon propels the rocket and the rocket travels ahead after which because it will get smaller, the primary balloon takes over.

Stage one!

Stage two!

Balloon Rocket lift off - balloon air escaping to push rocket travel down string
Watch the balloon rocket thrust power with balloon air to the tip of the fishing line!

Reusable Balloon Rocket

We launched the balloon rocket time and again and over. Every time watching the pushing power of the air rushes that created our rocket engine.

On the following launches, I used only one balloon as a result of it was simpler to arrange and I had very enthusiastic astronauts.

Balloon Rocket traveling to the end of the string with child following and trying to catch it
Are you able to catch the balloon rocket?

Why the Balloon Rocket works

Why does this occur? For each motion, there’s an equal and reverse response. This precept noticed by Newton, lies on the coronary heart of rocket (on this case, balloon rocket) science. The air escaping the balloon out the again pushes the rocket ahead in an other way. The power of the balloon air escaping is similar because the ahead movement power that pushes the journey.

Printable directions for this balloon rocket experiment.

Questions Youngsters Would possibly Have about Newtons Third Legislation

  1. What’s Newton’s Third Legislation?
  2. Are you able to clarify it in easy phrases?
  3. Who’s Newton and why is he vital?
  4. How does Newton’s Third Legislation work in on a regular basis life?
  5. Are you able to give me an instance of Newton’s Third Legislation?
  6. Does this regulation work for all the things or simply some issues?
  7. What occurs after I push or pull one thing?
  8. Why do issues transfer once we push or pull them?
  9. If I push my buddy on a swing, does the swing push again?
  10. How does this regulation assist us perceive how issues transfer?

Remember that Kindergartners, first-third graders won’t totally perceive the scientific ideas behind Newton’s Third Legislation, so it’s vital to supply easy, age-appropriate explanations and examples to assist them grasp the thought.

How do I make the balloon rocket go quicker or farther?

  1. Improve the air strain contained in the balloon: Inflate the balloon with extra air to extend the strain inside. Extra air escaping the balloon will generate a stronger power, propelling the rocket quicker and farther. Nonetheless, be cautious to not overinflate the balloon, as it could burst.
  2. Use a bigger or longer balloon: A bigger or longer balloon can maintain extra air, which implies it has the potential to generate a stronger power when the air is launched. Experiment with totally different balloon sizes to search out one which optimizes velocity and distance.
  3. Scale back friction: Be certain that the string or line used for the rocket’s path is tight and clean to attenuate friction. Lubricate the straw with a small quantity of dish cleaning soap or cooking oil to assist it slide extra simply alongside the string.
  4. Streamline the rocket: Be sure the straw or tube connecting the balloon to the string is light-weight and has a low profile to scale back air resistance. You may as well tape the balloon’s neck in a straight line alongside the straw to attenuate drag.
  5. Optimize the angle: Experiment with totally different angles of the string or line to search out probably the most environment friendly trajectory for the balloon rocket. A barely upward angle could assist the rocket journey farther.
  6. Use a nozzle: Connect a small nozzle or straw to the opening of the balloon to regulate the discharge of air extra successfully. This will help direct the escaping air extra exactly, producing extra thrust and probably making the rocket go quicker and farther.

Difficult children to make changes to their balloon rocket design is a good way to be taught concerning the elements that have an effect on the velocity and distance of a balloon rocket.

Associated: Use our scientific method for kids worksheets to check totally different balloon rocket designs!

Why does the air contained in the balloon make the rocket transfer?

The air inside a balloon needs to flee due to the distinction in air strain between the within of the balloon and the surface of the balloon. While you blow up a balloon, you might be forcing air molecules into the confined area inside, inflicting the air strain contained in the balloon to extend. The elastic materials of the balloon stretches to accommodate the elevated air strain.

The air strain contained in the balloon is larger than the air strain outdoors the balloon, which creates a strain gradient. The air molecules naturally attempt to transfer from an space of excessive strain (contained in the balloon) to an space of decrease strain (outdoors the balloon) to equalize the strain distinction.

While you let go of the balloon opening and permit the air to flee, the high-pressure air contained in the balloon rushes out by means of the opening, creating an motion power. Because the air escapes, it exerts a power on the air outdoors the balloon.

In response to Newton’s Third Legislation, the escaping air’s power has an equal and reverse response power. This response power acts on the balloon, propelling it in the wrong way of the escaping air. The balloon strikes ahead because of this power, functioning like a rocket.

How does the balloon rocket relate to Newton’s Third Legislation?

This balloon rocket science exercise demonstrates Newton’s Third Legislation of Movement in motion. Newton’s Third Legislation states that for each motion, there’s an equal and reverse response. In our balloon rocket exercise, this precept might be seen when the air contained in the balloon is launched, inflicting the rocket to maneuver in the wrong way.

While you inflate a balloon after which let it go with out tying the tip, the air contained in the balloon rushes out. Because the air is pushed out of the balloon (the motion), it exerts an equal and reverse power on the balloon itself (the response). This power propels the balloon in the wrong way of the escaping air, inflicting the balloon to maneuver ahead like a rocket.

This balloon rocket science experiment is considered one of my favourite examples of Newton’s Third Legislation in motion! It demonstrates how the power of the air escaping from the balloon ends in an equal and reverse power that propels the balloon ahead. This hands-on exercise will help youngsters higher perceive the idea of motion and response in a enjoyable and interesting manner.

Is it protected to make and play with balloon rockets?

Yep! It’s usually protected to make and play with balloon rockets as a result of they’re propelled by balloons. Clearly, youthful youngsters who may put a balloon of their mouth shouldn’t take part with out grownup supervision as it is a choking hazard. The opposite less-obvious hazard is allergic reactions. Some youngsters have an allergy to latex which is a standard materials utilized in balloons. You will discover latex-free balloons if wanted.

Extra Rocket Enjoyable from Youngsters Actions Weblog

Did you’ve gotten enjoyable with Newton’s Third Legislation and your home made balloon rocket?

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