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
- Clean water
- Liquid dish soap
- Pipe cleaner or straw
- 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.
- Measure ½ tablespoon of glycerin and add it to the container and again stir the solution slowly and place the container aside.
- 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.
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.
- Try using different sizes of bubble wand to blow bubbles of different sizes
- Add some drops of food coloring to the solution to make colorful bubbles.
Egg in a bottle is easy to do classic activity which you can perform in kitchen. In this activity a hard-boiled egg (peeled) is set on the mouth of the bottle and egg is sucked in the bottle. You will learn how pressure difference can cause push and pull.
- Boiled Egg (peeled)
- Large mouth bottle ( a little less than size of egg)
- Hot water
- Place the bottle on the table and fill it with hot water.
- After 30 seconds empty the bottle.
- Place a boiled egg on the mouth of the bottle. (do it as you empty the bottle)
JUST WAIT! As the bottle will become cool your boiled egg will be sucked in the bottle.
Hot water raised the temperature of air inside the glass. Hot air expands so some of it escapes from the bottle. When bottle becomes cool than air inside it also becomes cool and contracts which pulls the egg down into the bottle. Since egg is rubbery so it changes shape according to mouth of bottle and goes inside it.
- If you want remove the egg from the bottle than hold the bottle upside down so that the egg falls over the mouth of the neck, then blow into the bottle with your mouth as hard as you can. The egg will start to come out of bottle because air pressure inside the bottle is higher.
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?
- 1 Drinking Straw
- Stiff paper, File card or Index card
- Take a sheet of stiff paper and cut it into 3 pieces. Each piece measuring 5 inch long and 1 inch wide.
- 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.
- 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.
- 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.
- 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.
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 to change the length of straw and see what happens.
- Find out! What happens, when number of hoops is increased? Try using first 3 hoops than 4.
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.
- 1 Balloon
- 10 to 15 feet of string
- 1 Drinking Straw
- Bring two chairs and place them 10 feet apart.
- 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.
- Blow up the balloon and pinch the end of the balloon with your hand so that no air escapes from it.
- 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!
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.
- Use two same size balloons in place of one and tape them with straw in opposite direction and see what happens!
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.
- 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
- 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.
- Add few drops of food coloring of your choice into the bottle.
- 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.
- 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.
- 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.
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.
- Increase the amount of yeast added in the bottle and find out! Does it affect the rate of reaction?
- 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?