Fun physics Experiments

Science is all around us it is not just to the classroom or laboratory. There are lots of fun experiments that need very little equipment other than a few house items.

Rainbow in a Glass

Thickness is anything but solid. The physical experiment concept is by making a rainbow in a glass.

Materials need:

  • 5 glasses
  • Sugar
  • Water
  • Different colored food coloring
  • Tablespoon
  • Epic patience and a steady hand


  1. Line up the glasses and put 3 tablespoons of water into the first four glasses.
  2. Add one tablespoon of sugar to glass one, two to glass two, three to glass three, four to glass four.
  3. Stir carefully to dissolve the sugar.
  4. Now add a different color food coloring to each glass. Pour 1/4 of glass four into glass five.
  5. This is the complicated bit. You must pour the next layer (glass three) so softly that it doesn’t mix with the first layer.
  6. You can put a teaspoon just above the first layer and pour the mixture gently over the back of the spoon to reduce splatter.
  7. The more slowly you do this the better the results.
  8. When you have filled the glass to about the same size as the last layer repeat with glass two and then with glass one.

What is happening?

The different amounts of sugar in water create different densities of water.  Ultimately due to particle dynamics the layers will mix. The greater the difference in density, the longer the effect lasts. Water and oil once you mix the layers they will not settle back.

Self Inflating Balloon

Combine Biology and Physics to blow up a balloon with the power of yeast

You will need:

  • A used washed bubbly drinks bottle cap not required)
  • Latex balloon (thinner the better)
  • Elastic band
  • Measuring Jug
  • Yeast
  • Sugar
  • Water

What to Do:

  1. Place 2 teaspoons of yeast, 1 teaspoon of sugar and one cup of water into the bottle.
  2. Put the balloon over the top of the bottle and safe with the elastic band. Keep an eye on it

What’s happening?

Yeast is actually a micro-organism. The yeast is ‘eating’ the sugar and respiring. A product of respiration is Carbon Dioxide which slowly fills up the balloon.

Soda Volcano

You will need

  • A large bottle of diet coke
  • A pack of mentors
  • Fast hands
  • An open space

What to Do:

Drop a couple of mentors into a cola bottle and stand well back.


  1. The surface of the candy may look smooth but in physical terms it is actually quite rough.
  2. Fizzy drinks are fizzy because they feel a steady chemical reaction that releases carbon dioxide.
  3. The rough surface of the candy provides extra sites for this reaction to take place over – they are known as nucleation sites

Sticky Rice

  • Materials needed
  • Jam Jar
  • Pencil


  1. Get a clean jam jar. Fill to the top with rice.
  2. Hold the jar tightly with one hand and push a pencil right to the bottom.
  3.  Pull the pencil up slowly but not all the way out. The push it back down again. If the rice level starts to drop, top up the rice.
  4. The rice will solid around your pencil and you will be able to lift the whole jar with the pencil.

What’s Happening

The resistance between the pencil and rice is so large that you cannot easily pull the pencil out.

Bend water with static electricity

Materials required

  • Balloon
  • Steady Charger


  1. Blow up a balloon and rub it against your head to build up a static charge.
  2. Do this for several minutes to really get a decent charge.
  3. Turn a tap on it should be on enough for a steady but slow stream of water to come out, not just drips.
  4. Bring the balloon close to the stream of water and see what happens.

Cloud in a Bottle

We will create a cloud inside of a plastic bottle.  There is a great deal of amazing science going on in this very simple experiment.  In fact, this experiment is so simple that anyone can do it at home with common materials.

Materials Required

  • 1 Plastic Bottle
  • Pump


  1. Begin by pumping air into a plastic bottle and then quickly releasing the pressure.
  2. This quickly cools off the air and causes the water vapour to reduce into water droplets.
  3. This forms a thick cloud in a bottle and once the pressure is releases it takes less than a second to form.

What’s happening?

This experiment shows how clouds form in the atmosphere.  In the atmosphere, vanishing lakes and rivers cause water vapour to rise into the air. The higher it goes, the cooler it gets and finally it condenses back into water droplets in the form of a cloud. Inside of our bottle the fast decompression of the air is the cooling equipment which forms the cloud.

High School Biology Experiment

Biology is the study of life science. Branches of biology include anatomy, biotechnology, botany, cell biology, ecology, inheritance, medicine, microbiology, molecular biology, and zoology. Many people entering in the field of biology and are becoming expert in a particular area. High school biology courses offer an introduction to many topics in the life sciences. Students will learn about life starting at the cellular level.

Other topics covered include ecology with importance on fungi and plants, animal physiology and anatomy and population dynamics. Students learn scientific methods through a variety of experiments.  Biology is a division of science elemental in a student’s education. In the high school science classroom, experiments are an essential part of the learning process.

Biology encompasses four Main themes:

1.  The process of evolution drives the diversity and unity of life.
2.  Biological systems use free energy to grow, reproduce, and maintain life functions.
3.  Living systems store information essential to life processes.
4.  Biological systems relate with each other, and those connections have complex properties.

Effects of Temperature on Cell Respiration

Cell respiration is a series of enzyme catalyzed reactions in which carbohydrates, proteins, and fats are broken down to carbon dioxide and water with the release of energy. During this process, hydrogen is removed from the fuel molecules and oxygen is addicted. The students can measure oxygen consumption and hydrogen freedom in germinating barley at different temperatures. The program provides eight calibrated respiro meters for measurement of oxygen consumption and the chemicals required to perform a graphic dye reduction test.

Extraction and Analysis of an Enzyme from Wheat

Acid phosphatise is present in many plant tissues it catalyzes the removal of phosphate groups from macro molecules at low phi. In this exercise, students prepare a cell-free extract from wheat germ and determine the amount of the enzyme present in the extract. The experiment offers practical experience with enzyme extraction procedures and is an excellent introduction to the analysis of enzyme activity and basic enzyme kinetics.

Animal Anatomy

Classification has been the most used experimental technique while learning about animal and human composition and physiology. Many schools choose to analyze a frog. Dissection helps students learn about the organs, their structure and the relationships among them. After learning the general anatomy, organs such as a sheep’s heart or lung, may be dissected to learn the internal workings of the organ. For those different to performing vivisection which is the act of operating on a living animal, virtual dissection kits are available.


To show that the process of photosynthesis you will need a water plant, a vessel, a clear funnel and a test tube. Dip the water plant under water in the vessel and cover with the funnel. Put a test tube on top of the funnel making sure there are no attentive air bubbles in the test tube. Description the plant to sunlight and then observe as bubbles gather in the test tube.

Mouldy Bread

An easy and cheap biology experiment would be a test to find the best bread storage. Place slices from the same hang out in different conditions such as in a sealed bag, in a bag closed with a twist tie, in dark environments, in direct sunlight or in the freezer. In the days analyze the state of the bread to determine which method staves off mould the longest. A variation on this experiment would be to test different types of breads in one chosen storage condition to see which bread fares best. The student would then develop a theory based on the research.

Soil Test

In this project students go around the campus or their own neighborhoods to find four different types of soil. This could be sand, clay, mud near a body of water or loose dirt in a wooded area. Label each sample and place in a sealed jar. Check the samples daily or weekly for changes in the micro-organisms. Study these organisms under a microscope, keeping illustrations in a project log. Make note of any changes. The students can determine the type of soil favorable to planting, or the plant types that would increase best in each environment.

Physics Experiments at home

Physics is an important science subject that helps us to understand the world we live in. In Physics you can enjoy learning about topics such as energy, force and magnets with our cool physics facts. Science is an attractive subject with many wonderful things to learn and discover.  One of the best ways for children to learn about all types of science is by making it fun. Involving children in the scientific experiment process is a great way for them to get to know about education about all types of science from biology to astronomy to physics.

The gravity, electricity, magnets, gears are most liked physics topics. Experiments are an awesome part of science that allow students of all ages to engage in fun and exciting hands on learning experiences that they are sure to enjoy.

  1. Office Chair Physics Experiments

The position of your body can speed things up or slow them down when you are moving around at your desk.

You will need: a rotating office chair, A person and some open space where we can do this experiment.

Now learn about this Experiment:

  1. Have a seat in the office chair.
  2. Make sure that your feet are not touching the ground. Stretch your arms out wide and have your buddy give you a little spin on the chair.
  3. Now pull your arms in close to your chest and see what happens. Start with your arms out wide and then let your body take you for a rotate.
  4. As soon as you pull your arms close to your body you will start to spin faster.
  5. If you put them back out, you slow down again. This is because when you rotate or do any motion you have something called momentum.
  6. If you’re running quickly it takes more effort to come to a stop than it does if you are running slowly. Your energy depends on your mass and speed.
  7. The higher speed running has a higher energy than the lower speed running.

When you are rotating, you have got a quality called angular momentum which depends on your angular velocity.  Your speed around the spherical motion and a quantity is called moment of inertia. Moment of indolence measures how much your body will oppose a change in angular velocity and it is related to how your mass is distributed. Moving your arms in and out changes your moment of inertia. Momentum is always sealed.  During a motion, when one quantity changes (like your moment of inertia) the other must also change to make up for the difference.

Angular Momentum = Angular Velocity x Moment of Inertia

2. Sound in Space

This demo will discover the possibility of sound in space and the ways we can communicate with astronauts on the International Space Station.

What You Need

  • Empty Snapple© bottle
  • Matches
  • A small bell
  • Stick tack/tape
  • A Popsicle stick/any short, firm stick


  1. Take the small bell and join it to the Popsicle stick.
  2. Attach the opposite end of the stick to the bottom of the Snapple bottle cap.
  3. Shake the bottle cap to verify that the bell still makes a visible rattle.
  4. Now screw the cap onto the bottle and shake.  You should be able to hear the bell tune inside of the bottle.
  5. Remove the cap and remove the bell from the bottle.
  6. Light two matches and drop them into the bottle.
  7. As soon as the matches are dropped in, screw the cap and bell back onto the bottle.
  8. Wait until the matches are extinguished and the bottle cools if it is hot.
  9. Then shake the bottle once again. The bell should be much quieter than before if it’s even perceptible at all.

3.  Floating Rice Friction

Friction is a force we hear about everyday but we can’t underestimate its power.

What You Need

  • An empty plastic water bottle
  • Uncooked rice
  • A pencil

What to Do

  1. Fill the empty bottle to the top with rice.
  2. Slowly push the pencil down into the bottle and slowly pull it up again.
  3. Repeat this motion it will become ever more difficult to push the pencil down.
  4. Finally, you won’t be able to pull out the pencil anymore.
  5. You will be able to pick up the bottle with the pencil instead.
  6. When the rice is inside the bottle, there are grains next to one another but there is a little bit of space an air pocket in between each grain and its neighbour.
  7. Press the pencil into the bottle the grains of rice are pushed together to make room for the pencil.
  8.  Push the pencil in the grains combine closer and closer together until they are rubbing against neighbouring grains of rice.

This is when friction comes into play. Like when you rub your palms together, rice grains rubbing against each other feel a force resisting their motion. Once the grains are packed so closely together that the friction force becomes overwhelming, they will push against the pencil with a strong enough force to render the pencil stuck, allowing you to pick up the whole bottle with the pencil.

4. Big O’ Glass of Sunset

See the sky is blue and a sunset is orange, all in a glass of milk!

what Material you needed :

  • Tall clear glass of water
  • ½ tablespoon of milk
  • Flashlight

Instructions to do this experiment:

  1. Blend the milk into the water.
  2. Glow the flashlight from the side of the glass and observe the glass what colour is it showing?
  3. Look directly at the flashlight through the glass, what colour is it?
  4. Shine the flashlight up through the bottom of the glass and look down from the top.


In this experiment the milk particles are doing the dispersal.  Just like the light from the sun, the light from the flashlight is made up of many colours, just like the light from the sun. The milk in the glass is spreading the blue light but allowing the yellow and orange light to pass through. This makes the milk appear blue when looked at from the side, but yellow when looking straight at the flashlight.

5. Physics in the Microwave: Microwave Soap

What you need

  • Bar of soap
  • Microwave
  • Paper plate / shallow plastic container


What to Do

  1. Place the soap on the plate or thin container and put it in the microwave.
  2. Set the microwave for 2-3 minutes, turn it on, and watch the soap for the entire time.
  3. Let the soap cool for a few minutes and then take it out of the microwave.
  4. Be sure to clean out the microwave when you’re done.


  1. Soap contains small pockets of air that have water vapour intent inside of them.
  2. Like the moisture inside of a popcorn kernel, the water vapour inside of soap heats up when the microwave is turned on.
  3. This leads to areas of high pressure inside the soap.
  4. Ultimately the softened “walls” of the bar can’t hold up to the pressure and the soap starts to bubble and expand. As the soap cools down it stiffens up but keeps its new shape.

  6. Glowing Hands

Can you think of a way to make your hands glow in the dark

For this experiment you will need:

• A black light
• petroleum jelly
• latex gloves if you don’t want to get your hands untidy
• someone to turn on the black light for you.


  1. If you have Latex gloves put them on your hands.
  2. Reach into the jar of petroleum jelly and dig out enough jelly to cover both hands.
  3. Rub the jelly well over both hands, and then ask someone to turn off the lights in the room and to turn on the black light.
  4. Hold your hand under the black light.