Common myths about everyday science [Autosaved]

Views:
 
Category: Entertainment
     
 

Presentation Description

No description available.

Comments

Presentation Transcript

Common myths about everyday science:

Common myths about everyday science Made by AYUSHI GARG

Inspite of being from a scientifically advanced generation, all of us have some common misconceptions about science practiced in our daily life. Here are some of those common myths ::

I nspite of being from a scientifically advanced generation, all of us have some common misconceptions about science practiced in our daily life. Here are some of those common myths : I ntroduction

Myth no. 1 :

Myth no. 1 De oxygen ated BLOOD is BLUE

Reality :

Reality The blood with or without oxygen has same color RED . The reason why veins appear blue is a mere trick of light.

Myth no. 2:

Myth no. 2 Sun Is yellow

Reality:

Reality The temperature of the Sun is 6,000 degrees Kelvin, and any star of that particular temperature has only one color it can be: white

Myth no. 3:

Myth no. 3 There is no gravity in space

Reality:

Reality Gravity exists in virtually all areas of space. When a shuttle reaches orbit height (around 250 miles above the earth), gravity is reduced by only 10%.

Myth no. 4:

Myth no. 4 Brain cells do not regenerate

Reality:

Reality The study has found that the memory and learning center of the brain can create new cells – giving hope for an eventual cure for illnesses like Alzheimer’s .

Myth no. 5:

Myth no. 5 Meteors are heated by friction when entering the atmosphere

Reality:

Reality When a meteoroid enters the atmosphere of the earth (becoming a meteor), it is actually the speed compressing the air in front of the object that causes it to heat up.

Myth no. 6:

Myth no. 6 Going out in chilly weather causes you to catch cold

Reality:

Reality A cold is caused by a viral infection of the respiratory system. Viruses don't magically appear in your body because you went out to get the mail without your scarf and mittens .

Myth no. 7:

Myth no. 7 We only use 10% of our brain

Reality:

Reality Imaging technologies like FMRI reveal that we use most or all of our brains in one way or another.  

Myth no. 8:

Myth no. 8 Different Parts of Your Tongue Detect Different Tastes.

Reality:

Reality There is no “tongue map” of taste

Myth no. 9 :

Myth no. 9 Cold bodies do not have any heat.

Reality :

Reality Temperature of a body measures its degree of warmth. As cold bodies have temperature so they have heat too.

Myth no. 10:

Myth no. 10 Plants breathe by inhaling carbon dioxide and exhaling oxygen.

Reality :

Reality Plants take in air through their leaves. Both carbon dioxide and oxygen are used for different processes. Photosynthesis requires carbon dioxide, while respiration requires oxygen.

Myth no. 11:

Myth no. 11 Atoms “own” their electrons

Reality :

Reality There are not different kinds of electrons for different atoms. Atoms do not "possess" their specific electrons. Electrons are the same and can be transferred from one atom to another.

Myth no. 12:

Myth no. 12 Physical changes are reversible while chemical changes are not.

Reality :

Reality Chemical changes are also reversible. Some physical changes are also hard to reverse, for example, crushing a rock.

Myth no. 13:

Myth no. 13 Friction is a force.

Reality :

Reality Friction is not a force but it is the resistance that one surface or object encounters when moving over another.

Myth no. 14:

Myth no. 14 Black holes destroy everything

Reality :

Reality Black holes are not gravitational vacuum cleaners that suck in everything around them.  Like any star, things can orbit them.  

Myth no.15:

Myth no.15 One kilogram of iron is heavier than one kilogram of cotton.

Reality :

Reality Both are equal in mass.

Thank you very much.:

Thank you very much.

authorStream Live Help