Tag Archives: How To

How to Make Soap Bubbles

Make soap bubbles at home with the materials from kitchen. You will learn how to make soap bubbles solution and wand to blow bubbles. Find out! How bubbles work and tips for long lasting bubbles

blowing-soap-bubbles

Required Materials

  • Clean water
  • Liquid dish soap
  • Glycerin
  • Pipe cleaner or straw

What To Do

  1. Pour 3 cups of clean water and half cup of liquid dish soap into a container and stir them slowly to formation of foam or bubbles in the solution.
  2. Measure ½ tablespoon of glycerin and add it to the container and again stir the solution slowly and place the container aside.
  3. If you have any materials which has a circular hole can be used as bubble wand otherwise you can build one with a pipe cleaner or straw by bending its top tip into a circular shape than fasten it with tape.

Now it is time blow some bubbles, so take your bubble wand and dip it into the solution and blow in the hole.

explanation

The boundary of the bubble solution is made of three thin layer of soap, water and soap means water is sandwiched between two layers of soap. This boundary is called soap film. When water evaporates from layers of soap than the bubble pops. Glycerin is mixed with solution to make layers of soap thick which keeps the water from evaporating quickly. in this way bubbles become stronger and last longer.

bubble-explained

try-this

  1. Try using different sizes of bubble wand to blow bubbles of different sizes
  2. Add some drops of food coloring to the solution to make colorful bubbles.

How to Make Hoop Glider

Planes that fly in air mostly have flat wings that hold them in air. Can a curled wing plane fly in air? Let’s make an experiment to find out! What will happen if we replace the flat wings of a plane with hoops and see how a plane with hoops can fly in air?

Hoop Glider

Required Materials

  • 1 Drinking Straw
  • Stiff paper, File card or Index card
  • Scissors
  • Tape

how-to-make

  1. Take a sheet of stiff paper and cut it into 3 pieces. Each piece measuring 5 inch long and 1 inch wide.
  2. Take one piece of stiff paper and curl it to overlap its end edges and tape them together to form a small hoop required for glider.
  3. Take two other pieces of stiff paper and tape their end edges together to make a long strip. Curl this long strip to overlap its two end edges and tape them together to form second hoop of larger size.
  4. Tape the two hoops that you made in previous steps with straw. One hoop at one end of straw and other hoop at its second end. Straw should be kept inside of the hoops at the time of taping and make sure that both hoops are aligned.
  5. That’s it! Your glider is ready.

When you want to launch your hoop glider, just hold it in the middle of straw and throw it in air like you do with a paper plane.

NOTE: Both hoops should be on the top when you hold the straw and smaller hoop facing should be in the direction of your throw at the time of launch.

explanation

Two hoops in this glider are used to keep the straw balanced in the air while flying. Small size hoop keeps the glider from turning and big hoop creates air resistance which keeps the straw leveled. Since both hoops have different weight so you may be thinking why the glider does not turn over? Actually due to gravity lighter and heavier objects fall at same speed that’s why glider maintains its upright position.

try-this

  1. Try to change the length of straw and see what happens.
  2. Find out! What happens, when number of hoops is increased? Try using first 3 hoops than 4.

How to Make a Balloon Rocket

This is a simple science experiment to understand the newton’s third law, which states that “Every action has reaction”. You will build a simple rocket out of a balloon and straw that will slide over a string by producing thrust.

Balloon Rocket

Required Materials

  • 1 Balloon
  • 10 to 15 feet of string
  • 1 Drinking Straw
  • Tape

how-to-make

  1. Bring two chairs and place them 10 feet apart.
  2. Tie one end of string with one of the two chairs. Pass another end of string through the straw and tie with second chair tightly so that string bound between two chair become flat.
  3. Blow up the balloon and pinch the end of the balloon with your hand so that no air escapes from it.
  4. Tape the balloon with straw while holding the end of balloon closed (ask your friend to help you).

When you want your rocket to slide over string, just leave the end of balloon so air from balloon rushes out of it. Watch your rocket!

explanation

When you allow the air to rush out of the balloon, it creates thrust which propels rocket forward. So how this thrust is produced? Actually balloon forces the air to rush out of it which in turn pushes the balloon in its opposite direction. That’s what the newton said “Every action has reaction which acts in opposite direction” that means if air is rushing leftward than balloon will propel to rightward.

How Balloon Rocket Works

try-this

  1. Use two same size balloons in place of one and tape them with straw in opposite direction and see what happens!

How to Make Foamy Fountain

Make this interesting colored foamy fountain at home and enjoy its beauty! The foam that is produced by fountain is special because each bubble is filled with oxygen gas. You will learn how this fountain works and what science is behind it.

Required Materials

  • Empty plastic bottle about 500ml (half liter) in volume
  • ½ cup of Hydrogen Peroxide (20-volume or 6%)
  • 1 Tablespoon of Yeast
  • Liquid dish soap
  • Food coloring

how-to-make

  1. Pour ½ cup of hydrogen peroxide in the bottle. Be careful! When dealing with hydrogen peroxide. It can irritate skin so let an adult to handle it.
  2. Add few drops of food coloring of your choice into the bottle.
  3. Add 1 tablespoonful of liquid dish soap into the bottle. Close the bottle with cap and swish it so that all the liquids mix together.
  4. Take a cup and add 3-4 tablespoons of water and 1 tablespoon of yeast in it. Stir the cup with spoon to mix the water and yeast together.
  5. Your fountain is ready. When it is time to start fountain just add water-yeast mixture into the bottle.

Fountain will expel the foam out of the bottle so you should do this experiment at washable area of your home.

Foamy Fountain

explanation

This Foamy Fountain is the breaking of hydrogen peroxide into water and oxygen gas with the help of yeast that acts as a catalyst. Sudden release of oxygen cause rapid bubbling of gas because of soap in the bottle. These bubbles rush out of bottle because new bubbles are constantly created.

try-this

  1. Increase the amount of yeast added in the bottle and find out! Does it affect the rate of reaction?
  2. Increase the amount of Hydrogen Peroxide and also add some water in the bottle and find out! Does it affect the timing of the fountain?

How to Make Boat Powered by Soap

Using detergent to power a boat is a fun science experiment. You will learn to make a boat that runs only on detergent and find out! How surface tension of water is affected to power your boat.

Required Materials

  • Sheet of cardboard or Styrofoam
  • Liquid dish soap
  • Dropper or Pencil
  • Scissors

how-to-make

  1. Cut a sheet of cardboard into the shape of boat. It should be 2 inch long and 1.5 inch wide and make triangular shaped notch in its back (as shown in the figure).
    Soap Boat
  2. Place your boat in a water tub or in any basin so that your boat have enough space to move.
  3. Place a drop of liquid dish soap in the notch of your boat with dropper or pencil.

Watch your boat going around the tub! It will move forward.

Soap boat in the water

explanation

Water molecules are attracted to each other which creates surface tension in the water. Liquid dish soap is a surfactant means it breaks down the surface tension of water. When you add liquid dish soap in the notch, it breaks the surface tension of water contain in the notch, which in turns creates enough force to push the boat forward. Light material (e.g. Styrofoam or cardboard) is used to build the boat so that it can be pushed when surface tension breaks.

try-this

  1. Use different materials to build your boat and find out! Which material provides more speed?