Science Facts of June - 2015

30

Tuesday

Today’s Science Message

You must’ve probably heard about the self-cleaning ability of a lotus leaf, which is known as the Lotus Effect. It turns out, the leaf’s surface is covered with nano scale bumps that cause water droplets to form and roll off, pulling dirt along with them. This hydro-phobic effect has inspired innovators to make self-cleaning glass and coatings.


29

Monday

Answer for the Question of the Week

On hot days, the air inside a bicycle tube gets heated and therefore, the pressure inside the tube increases. The tube, which is made of rubber, also expands slightly with the rise of temperature, making the tube more fragile to punctures. As a result, most bicycle tube punctures happen on hot days.


26

Friday

Question of the Week

25

Thursday

Today’s Science Message

Did you know why the planet Mars is red? Rocks and soil on the surface of Mars contain a dust composed mostly of iron. The iron has reacted with oxygen, producing a red rust color (iron oxide). So yes, Mars is Red because it’s rusted‍!


24

Wednesday

Today’s Science Message

Wouldn’t it take you by shock to hear that scientists are claiming we are already entering the 6th mass extinction? It turns out that we, humans, are the driving force behind it. Since the industrial revolution, many identified animal and plant species have become extinct. At this rate, 75% of the species we know today are estimated to go extinct in less than a couple of centuries, causing threats to humanity’s existence as well.


23

Tuesday

Today’s Science Message

Do you remember us once telling that eating Bananas can boost your happy mood? A recent study done by a group of Japanese researchers has claimed that ripe Bananas with brown spots can also help your body to prevent and fight against cancer. These brown spots contain a chemical called TNF that gives bananas this ability.


22

Monday

Answer for the Question of the Week

Diamonds have a significantly higher refraction index than other crystals. That causes total internal refraction to take place. Most light rays get internally refracted for several times inside the diamond before they emerge, making the diamond shine. Apart from that, diamonds are expertly cut and polished to enhance this natural brilliance.


19

Friday

Question of the Week

18

Thursday

Today’s Science Message

You would be fascinated to hear that tall buildings, aka skyscrapers, are designed and built to sway back and forth for safety purposes. If they aren’t able to move at the top, the building could get damaged because of the wind pressure. Swaying helps to alleviate the pressure caused by high wind flows.


17

Wednesday

Today’s Science Message

It’s unlikely that you could’ve forgotten the devastating couple of earthquakes that hit Nepal recently. Did you know that they were so powerful that they caused the highest mountain in the world, Everest, to shift by 3 centimeters?


16

Tuesday

Today’s Science Message

Isn’t it amazing that some species of Leafcutter Ants know how to maintain fungus farms? These ants are famous for the way they slice off bits of leaf and carry them back to their colonies. Despite what most people think, the leaves aren’t food, but fertilizer for their gardens.


15

Monday

Answer for the Question of the Week

Lactose intolerance occurs when a person’s intestines don’t make enough Lactase enzyme to digest the Lactose in the foods they consume. But in fermented foods such as yoghurt and curd, the Lactose content has already been digested by bacteria added in the process of fermentation. Therefore, fermented foods don’t cause irritable effects when consumed by lactose intolerant people.


12

Friday

Question of the Week

People who are lactose intolerant are allergic to fresh milk but they can consume fermented products such as curd or yoghurt without the occurrence of any negative after effect. Explain why.


11

Thursday

Today’s Science Message

Have you ever wondered how spiders avoid sticking to their own webs? Spiders are able to spin sticky and non-sticky silk that they can easily differentiate. By avoiding walking on the sticky silk, they can walk effortlessly without getting tangled. In addition, spiders have moveable claws on their feet that grip and release the web’s threads as they walk.


10

Wednesday

Today’s Science Message

Crocodiles’ teeth are not designed to chew food. They swallow their prey as a whole. But wouldn’t it surprise you to hear that they also swallow stones? The rocks in their stomachs are able to crush and grate food. Apart from that, this behavior of stone swallowing lets them gain extra weight and improve swimming and diving skills.


9

Tuesday

Today’s Science Message

The water recovery system on the International Space Station (ISS) is able to recycle almost all the perspiration and urine produced by the astronauts, converting them back into drinkable water that is more purified than the water we drink on earth.


8

Monday

Answer for the Question of the Week

The bounce rate of a ball is decided by the amount of energy left after the impact with the surface. When a rubber ball hits a surface it compresses and deforms before returning to its original shape. Some of the energy that could’ve been used to bounce, is lost in this process. This does not happen with a glass ball since it would not get deformed when it hits a surface. Therefore, the energy waste of a glass ball collusion is much lower. This allows them to bounce higher.


5

Friday

Question of the Week

4

Thursday

Today’s Science Message

Do you know why you’re advised not to burn rubber at home? The rubber we use for household purposes has undergone a process called vulcanizing by adding various amounts of sulfur to make them more elastic and less vulnerable. The gas SO2, which is a hazardous air pollutant, is emitted into the air when burning these rubber. SO2 affects people’s health by causing respiratory and cardiovascular diseases. High concentrations of SO2 in the air also contributes to acid rains and climate change.


3

Wednesday

Today’s Science Message

Have you ever wondered how astronomers are able to measure the distances from earth to other stars? They use nothing more than simple trigonometry we were taught at school! When they look at a star one day and again after about 6 months later, they observe the star from two different places because of the earth’s rotation around the sun. They know the diameter of orbit and the difference of the viewing angle and they can easily calculate the distance to the desired star.


1

Monday

Answer for the Question of the Week

When heated, the layers of the glass that get heated first start expanding. Since glass is also a bad heat conductor, this expanding happens unevenly, as the heat fails to spread through the glass uniformly. The tension created here causes the glass to crack. Heat tolerant types of glass that exist today are made by increasing their heat conductivity. Despite most people’s belief, glass is not a solid. Glass is a super-cooled liquid.