Why do some people have freckles?

People with light skin and eyes are more likely to have freckles because they have less melanin, a chemical in the skin that protects it from sun damage by reflecting and absorbing ultraviolet (UV) rays. Instead of tanning, they freckle.

Some people’s freckles fade away almost completely in the winter, and then return in the summer, when the person is more likely to sunburn. Sunscreen can help protect everyone (freckled or not) from the Sun’s harmful rays.

How do you stop a brain freeze?

Quickly gobbling up cold ice cream may result in “brain freeze,” also know as an ice cream headache. When the cold object touches the roof of your mouth, the blood vessels contract in order to prevent loss of body heat. As the coldness stops, the blood vessels relax again, quickly increasing blood flow to the brain.

This sudden release is What causes the intense headache sensation. You can relieve brain freeze by quickly warming the roof of your mouth: Touch your tongue to the top of your mouth or, if you can roll your tongue in a ball, press the underside of your tongue (which is warmer) to the roof of your mouth. Slowly sipping room-temperature water or pressing a warm thumb against the roof of the mouth also works for some people.

Why do we say that someone looking for trouble has a “chip on his shoulder”?

In early England, one man would challenge another to a duel by slapping his face with a glove. The challenge was a serious matter of honour, and if the slapped man did not accept it, he would be branded a coward. Having a chip on your shoulder was kind of an early Wild West equivalent of the glove slap, though generally less mortal in nature.

Boys and men would place a woodchip on their shoulder, challenging anyone who dared knock it off to a fistfight. So, if a man had a “chip on his shoulder,” he was clearly in an aggressive mood and spoiling for a fight.

Which planets experience the greenhouse effect?

The greenhouse effect describes a warming phenomenon. (In a greenhouse, closed glass windows cause heat to become trapped inside.) The greenhouse effect occurs when a planet’s atmosphere allows heat from the Sun to enter, but refuses to let it leave. A good example of the greenhouse effect can be found on Venus.

There, solar radiation penetrates the atmosphere, reaches the surface, and is reflected back into the atmosphere. The re-radiated heat is trapped by carbon dioxide, which is abundant in Venus’s atmosphere. The result is that Venus has a scorching surface temperature of 900 degrees Fahrenheit (482 degrees Celsius). The greenhouse effect can also be found on Earth and in the upper atmospheres of the giant planets: Jupiter, Saturn, Uranus, and Neptune.

Should I wash my hands before I eat?

Yes. Washing your hands with soap and water cleans them of pathogens (bacteria and viruses) and chemicals that can cause disease. Hot water is not enough to clean your hands. Using soap adds to the time spent washing and breaks down the grease and dirt that carry most germs.

The most important times to wash your hands with soap and water are after you use the toilet or before handling food. When not washed with soap, hands that have been in contact with human or animal feces, bodily fluids like mucus, and contaminated foods or water can transport bacteria, viruses, and parasites to others. When done thoroughly and at least for 20 seconds, hand washing can prevent all types of illness and disease, skin infections, and eye infections.

Do I have to brush my teeth?

Absolutely! Strong, healthy teeth help you speak clearly, chew harder vegetables and meats, and help you look your best. Brushing your teeth helps prevent plaque, a clear film that sticks to your teeth. The sticky film acts like a magnet for bacteria and sugar. Bacteria eats the sugar on your teeth, breaking it down into acids that deteriorate tooth enamel, causing holes called cavities. Plaque also causes the gum disease gingivitis, which make your gums red, swollen, and sore. At around age six, you lose your baby teeth and a larger set of teeth begin to surface. Eventually, 32 new teeth will line your growing jaws, the last coming in around the age of 18.

These permanent teeth will perform all of your eating tasks for the rest of your life, so they are worth taking care of! Your four front teeth (on top and bottom) are sharp incisors that cut and tear off food when you bite, along with your four pointed canine teeth. The flat-topped bicuspids (premolars) and molars near the back of your mouth crush and chew your food.

Interesting facts about Psychology

1.    80% of women use silence to express pain. You know she’s truly hurt when she chooses to ignore you.
2.    Psychology says, friendship is not about who you spend the most time with, it’s about who you have the best time with.
3.    Psychology says, ironically, the more you hide your feelings, the more they show. The more you deny them, the more they grow.
4.    Being sarcastic on a regular basis can add up to 3 yrs to your life. Sarcasm is extremely healthy for the mind.
5.    Being able to respond with sarcasm to a stupid question within seconds is literally a sign of a healthy brain.
6.    Bad relationships change good people.
7.    Psychology suggest that sometimes you love someone so much that not even the truth can change your mind.
8.    The loneliest people are the kindest. The saddest people smile the brightest. The most damaged people are the wisest.
9.    Late night phone and text conversations tend to be the best.
10.    Work hard in silence, let your success be your noise.
11.    Psychology says, the person you care about the most can literally shatter your confidence with their opinions.
12.    Psychology says: People tend to value memories more than actual people. Sometimes you miss the memories, not the actual person.

13.    When it’s after 2am, just go to sleep. The decisions you make after 2am are always the wrong decisions.
14.    Psychology says, your personality is who you are. Your attitude is usually based on how a person treats you.
15.    70% of people pretend to be okay simply because they don’t want to annoy others with their problems.
16.    Positive events, such as graduating, getting married and a new job often lead to depression.
17.    Psychology says, the lyrics in your favorite song express everything that you struggle to say or express to others.
18.    Being in a relationship is not about kissing, dates or showing off. It’s about being with the person who makes you happy.
19.    People who laugh more are better able to tolerate pain – Both physical and emotional.
20.    Women are automatically more attracted to guys who make an effort to start the conversation, showing initiative and consistency.
21.    Psychology claims that If two past lovers can remain just friends, its either they are still in love, or never were.
22.    Generally, people are more likely to assume you’re being rude when you’re actually being honest.
23.    Your age doesn’t define your maturity, your grades don’t define your intellect, and rumors don’t define who you are.
24.    90% of people will fake laugh when they don’t understand what someone said to them.
25.    Psychology says, staying quiet doesn’t mean you’ve got nothing to say. It means you don’t think they’re ready to hear your thoughts.

What’s a charley horse?

A charley horse a muscle cramp, or sudden, uncontrolled contraction of a muscle. This type of pain is generally felt in the legs, sometimes after heavy exercise, and usually lasts just a few minutes.

The expression probably came from the word “charley,” which is used to describe a horse that is lame.

What are “dog days”?

“Dog days” are the hot, humid days of summer that usually take place in the Northern Hemisphere in July and August typically between July 3 and August 11. The days get their name from the dog star Sirius of the constellation Canis Major.

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At this time of year, Sirius, the brightest visible star, rises in the east at the same time as the Sun in the northern hemisphere. Ancient Egyptians believed that the heat of this brilliant star added to the Sun’s heat to create this hot weather and they blamed the star for everything from withering droughts to sickness.

Why is it important to conserve water?

Water is vital to the survival of everything on the planet and is limited in supply. Earth might seem like it has abundant water, but in fact only 1 percent is available for human use. While the population and the demand on freshwater resources are increasing (each person uses about 12,000 gallons of water every year), supply remains the same. Water is constantly being cleaned and recycled through Earth’s water cycle, yet we still need to conserve it because people use up Earth’s freshwater faster than it can naturally be replenished.

When you use water wisely, you help the environment. You save water for fish and animals, help preserve drinking water supplies, and ease the job of wastewater treatment plants—the less water you send down the drain, the less work these plants have to do to make water clean again. When you use water wisely, you also save the energy that your water supplier uses to treat and move water to you, and the energy your family uses to heat your water. Your family pays for the water you use, so if you use less water, you’ll have more money left to spend on other things.