Interesting Science Facts

Did you know that the largest volcano in the Solar System, which is even bigger than Mt. Everest, is located on planet Mars? Were you aware of the fact that it would take us 2 million years to travel to Andromeda, the galaxy which is nearest to us, in the fastest spacecraft in the world? What about the fact that King Cobra is the only snake which makes its nest on the ground to lay eggs. Were you aware of that? There are thousands of such facts which you must have never heard before – each of which is more amazing than the other. That makes it virtually impossible to compile a list of interesting science facts which would include each and every fact that has the ability to leave you amazed. A relatively simple way out is to compile a short list of say 10 most interesting facts that you come across, and that’s exactly what we have done.

Most Interesting Science Facts

Science is a broad concept which encompasses several disciplines, and hence compiling a list of interesting science facts is no easy job. We have compiled a few fun science facts which we think are quite amazing in themselves. Not many people know that the planet Venus is the only planet in the Solar System which rotates in clockwise direction. Similarly, not many people must be aware of the fact that they had 300 bones when they were born, which eventually fused to becomes 206. Given below is a list of 10 most interesting facts about science which you must have never heard before.

  1. The tallest mountain in the world is Mount Everest with a height of 8842 meters, whereas the deepest part of the ocean - the Mariana trench has a depth 11,033 meters.
  2. The human brain can continue to live without oxygen supply for a period of 4-6 minutes, after which it slowly starts dying.
  3. Lake Baikal in Russia has the distinction of being the deepest lake in the world with an average depth of 2,442 ft, and the deepest point at 5,387 ft.
  4. When an astronaut returns from the space you can see a difference of up to 2 inches in his height, as the cartilage disks in our spine tend to expand where there is no gravity.
  5. The first picture of planet Earth from outer space was taken by the US satellite Explorer 6 in 1959, two year before Soviet cosmonaut Yuri Gagarin became the first person to see the planet from the outer space.
  6. As of today, the hottest temperature on the planet has been recorded in Libya (136 °F in 1922), while the coldest temperature has been recorded in Antarctica (-128.6 °F in 1983).
  7. Every single year, millions of earthquakes occur on the planet. However, most of them are too mild for us to sense, so we are not aware of them.
  8. Have you ever tried to tickle yourself? It’s impossible to do so because even before we think about doing it, our brain gets programmed to feel it.
  9. Among all the natural substances found on the planet, the diamonds have the highest melting point.
  10. The Earth travels at an enormous speed of 67,000 mph in the space.

Interesting Science Facts about Animals

While cool science facts mentioned above were amazing in themselves, that’s not all what we have for you. Have you ever watched a cheetah chasing a gazelle on some informative TV channel? The speed at which these animals take off is quite amazing, isn’t it? But did you know that the cheetah is not the fastest animal on the planet? Well it is the fastest animal on land, (followed by its prey – the gazelle on second position in terms of speed), however the fastest animal on Earth is Peregrine falcon which has an ability of clocking a speed of 200mph in air. Given below is a compilation of more of such interesting animal facts, which will shed light on some of the most amazing attributes of various members of kingdom Animalia.

  1. The Arctic tern covers a distance of around 20,000 miles during its seasonal migration from Arctic to Antarctica and back.
  2. A wolf’s howl doesn’t produce an echo even if the animal howls right in the middle of a valley surrounded by large mountains.
  3. The strategically placed head of a praying mantis allows it to rotate its head 360°, thus making it the only insect with the ability to turn its head.
  4. A cockroach doesn’t die even if you separate its head from its body as it brain is located in its body. (However, without a head and mouth it can’t feed and that eventually causes his death).
  5. The white-tailed deer native to North America is considered to be the most harmful animal for humans in the United States, owing to the large number of accidents that it is involved in.
  6. The blue whale can produce a sound which clocks 188 points on the decibel scale, which makes it the loudest animal on the planet.
  7. A woodpecker slams its beak into wood at an amazing rate of 20 pecks per second, while a humming bird flaps its wings 55-75 times per second when it is stationary in the air.
  8. The humming bird also has the distinction of being the only bird in the world with the ability to fly backwards.
  9. The rhinoceros beetle has the ability to lift weight that is 800 times than its won weight – that’s surely a gold medal performance among animal species.
  10. True to its name, the female black widow spider has the tendency to eat its male after mating.


Lemon Battery Experiment


One classic science experiment used to demonstrate the fundamentals of a chemical battery system is that of a lemon battery. Lemon batteries are not capable of running motors, but they have the capacity to produce a dim glow in an LED. Batteries comprise two different metals, copper and zinc, immersed in an acidic solution. The copper metal functions as the positive electrode and the zinc metal functions as the negative electrode. All batteries have a “+” and “-” terminal. The acidic solution in the battery is called the electrolyte. In case of the lemon battery, the acidic lemon juice is an electrolyte, and helps to break down the atomic structure of the zinc and copper metals. This results in the release of individual electrons. The flow of individual electrons is called electricity. These electrons will flow from the negative terminal to the positive terminal of the battery. The measure of force of the moving electrons is called voltage. This is the concept behind the lemon battery experiment. However, creating successful lemon batteries is not easy.

How to Make a Lemon Battery

Requirements

  • Lemon (fresh and juicy)
  • Nail (2″galvanized, zinc-coated steel nail)
  • Clean copper coin
  • Sensitive voltmeter (found in the electrical supply section of a hardware store)

Lemon Battery Light Bulb Experiment

Step 1
The first step is to cut a slit into one side of the juicy lemon, and insert the clean copper coin into it. On the other side, insert the galvanized zinc nail. Ensure that the nail and coin do not touch each other. The coin and nail form the positive and negative electrodes respectively, thereby forming the single cell of the battery. The two oppositely charged electrodes will now permit the flow of electrons through them. The free electrons from the lemon juice will travel from the negative electrode (nail) to the positive electrode (coin).

Step 2
The rate at which the electrons flow is called voltage. The faster the electrons flow, the higher the voltage. The voltmeter will measure the rate of electron flow. If one connects the voltmeter to the electrodes, a voltage of 0.906 volts will be detected. However, this is not enough to light a bulb.

Step 3
To achieve enough voltage to light the bulb, one has to make more lemon batteries and connect them via a metal wire. The metal wire should connect the positive electrodes to the negative ones, and this will add voltage from each cell. Take four lemon batteries and join them together from positive to negative. A total voltage of 3.50 volts will be created, which is enough to light up a small light emitting diode or LED light.

Step 4
At the plastic base of an LED, one will find two wires and a ‘flat spot’. The wire just besides the flat spot needs to be connected to the negative side of the battery, while the other wire needs to be connected to the positive terminal. The electrons flow from the nail end to the coin end, thereby forming an electronic circuit which causes the LED to glow dimly.

The above steps on how to make a lemon battery can help one make a lemon battery at home without much effort. LEDs work at even very low voltages (below 2V) and low currents. These LEDs get damaged if connected to batteries over 2 volts. Thus, they require resistors to control batteries which are rated over 2V. However, since lemon batteries produce low current, it is safe to connect an LED to it. However, in this lemon battery experiment, the copper coin can pose a problem. The coin should be pure copper. One can substitute a 14 gauge copper wire for the coin. One can try out different permutations and combinations of electrodes in the lemon battery experiment.

Simple Science Experiments

Science is the explanation of whatever is happening around us in a logical way. There are certain things in nature, the mechanism of which we know by heart and those simple mechanisms lay the foundation for greater happenings. Initially when man was ignorant he did not know about these simple things that happen around us like why and how it rains and why certain metals attract some other metals. Early man also wondered why plants move towards sunlight and the cause behind lightening and thunder but now modern man knows it and we have got to pass on this basic knowledge to the next generation. Only when they understand the basics they would comprehend the greater phenomena of nature. They would admire and try to explore it instead of being in awe of it.

Science Experiments

  • Experiment 1 – Swinging cerealMaterials needed

    A plastic comb, small pieces of dry cereal (O-shapes, or puffed rice of wheat), thread.

    Procedure

    Tie a grain of the cereal to one end of the thread. Attach the other end of the thread to something so that the cereal does not hang close to anything else, it can be tied to a pencil or it can be stuck or glued to one of the edges of the table. Take a comb and wash it to remove any oils and dry it well. Once the comb is run through long, dry hair several times, or briskly rubbed against a wool sweater, it would be charged. It can be understood since when the comb is brought near the cereal the cereal swings to touch the comb. It has to be held until the cereal jumps away by itself. Now try and touch the comb to the cereal again. This time it will move away as the comb comes near. Taking a balloon instead of the comb can also help in this experiment.

    Inference

    When the hair was combed the electrons moved from hair to the comb. The comb already possessed of a negative static charge. The cereal that was neutral was therefore attracted to it. When the cereal and the comb touched, the electrons slowly got transferred from the comb to the cereal. Now both objects having the same negative charge repelled each other.

  • Experiment 2-Poles of a MagnetMaterials Needed 

    Magnet, a string, tape

    Procedure 

    A magnetic rod can be used as a compass, but the first thing that has to be done is to find and mark the North Pole on it. Now a long string can be tied by passing it through the hole in the handle of the rod, and turn towards north. Now the rod should be allowed to hang freely on the string so that it can move in any direction. It should be remembered that on the magnet the poles are on the flat sides of the magnet. So now when the rod stops whirling, that side of the magnet that faces north should be marked with a piece of tape. This side is the north- seeking pole of the magnet.

    Inference 

    The earth is also like a big piece of magnet and it also has its North Pole and South Pole. The magnetic North and South Poles are also located near the geographic North and South poles, which are located opposite to each other. However the magnetic poles keep moving from one place to another each year. Therefore to determine the magnetic south and north poles a magnetic wand or compass is required which always points towards the magnetic north.