What is an upside down rainbow called?
An upside-down rainbow is an unusual phenomenon caused by sunlight shining through a thin, visible screen of tiny ice crystals high in the sky. Interestingly enough, it has nothing to do with rain. Some people refer to this as a 'smile rainbow'.
@askmenow
An upside-down rainbow is an unusual phenomenon caused by sunlight shining through a thin, visible screen of tiny ice crystals high in the sky. Interestingly enough, it has nothing to do with rain. Some people refer to this as a 'smile rainbow'.
@askmenow
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What organ produces adrenaline?
Epinephrine and norepinephrine are two separate but related hormones secreted by the medulla of the adrenal glands. They are also produced at the ends of sympathetic nerve fibres, where they serve as chemical mediators for conveying the nerve impulses to effector organs.
@askmenow
Epinephrine and norepinephrine are two separate but related hormones secreted by the medulla of the adrenal glands. They are also produced at the ends of sympathetic nerve fibres, where they serve as chemical mediators for conveying the nerve impulses to effector organs.
@askmenow
How high is the top of the atmosphere?
Earth's atmosphere is about 300 miles (480 kilometers) thick, but most of it is within 10 miles (16 km) the surface. Air pressure decreases with altitude. At sea level, air pressure is about 14.7 pounds per square inch (1 kilogram per square centimeter).
@askmenow
Earth's atmosphere is about 300 miles (480 kilometers) thick, but most of it is within 10 miles (16 km) the surface. Air pressure decreases with altitude. At sea level, air pressure is about 14.7 pounds per square inch (1 kilogram per square centimeter).
@askmenow
Why is it called the Continental Divide?
The Continental Divide, also called the Great Divide, is a natural boundary line separating waters that flow into the Atlantic Ocean or Gulf of Mexico from those that flow into the Pacific Ocean. It runs north-south from Alaska to northwestern South America.
@askmenow
The Continental Divide, also called the Great Divide, is a natural boundary line separating waters that flow into the Atlantic Ocean or Gulf of Mexico from those that flow into the Pacific Ocean. It runs north-south from Alaska to northwestern South America.
@askmenow
Do fish sleep at night?
Yes, I would say that fish do sleep. Some fish actually lie on the bottom at night. Some of them even produce a gooey covering as a protection against other fish who might be looking for an easy meal. In the dark many fish have a lower rate of metabolism (their body machinery slows down), and that is much like sleep.
@askmenkw
Yes, I would say that fish do sleep. Some fish actually lie on the bottom at night. Some of them even produce a gooey covering as a protection against other fish who might be looking for an easy meal. In the dark many fish have a lower rate of metabolism (their body machinery slows down), and that is much like sleep.
@askmenkw
How many active volcanoes are there in the world?
There are about 1500 potentially active volcanoes worldwide, aside from the continuous belt of volcanoes on the ocean floor. About 500 of these have erupted in historical time. Many of these are located along the Pacific Rim in what is known as the 'Ring of Fire.'
@askmenow
There are about 1500 potentially active volcanoes worldwide, aside from the continuous belt of volcanoes on the ocean floor. About 500 of these have erupted in historical time. Many of these are located along the Pacific Rim in what is known as the 'Ring of Fire.'
@askmenow
Is a mushroom a vegetable?
A mushroom is neither a fruit nor a vegetable; technically mushrooms aren't even plants. They are a special type of fungus—a notion that puts some people off. If you don't mind the fungus part, though, mushrooms are a great addition to a healthy diet—not to mention totally delicious.
@askmenow
A mushroom is neither a fruit nor a vegetable; technically mushrooms aren't even plants. They are a special type of fungus—a notion that puts some people off. If you don't mind the fungus part, though, mushrooms are a great addition to a healthy diet—not to mention totally delicious.
@askmenow
What part of the body never stops growing?
Bones, stop growing after puberty and muscle and fat cells also stop dividing. But cartilage - that's the plastic-like stuff in ears and noses - cartilage continues to grow until the day you die. Not only does cartilage grow, but the earlobes elongate from gravity.
@askmenow
Bones, stop growing after puberty and muscle and fat cells also stop dividing. But cartilage - that's the plastic-like stuff in ears and noses - cartilage continues to grow until the day you die. Not only does cartilage grow, but the earlobes elongate from gravity.
@askmenow
Why are your lips red?
Your lips' red or pink pigment comes from underlying blood vessels -- red-colored, blood-filled capillaries are close to the thin skin on your lips. The transition of the reddish-pink outline of your lips to the rest of the skin is called the vermillion border, and it's found only in humans
@askmenow
Your lips' red or pink pigment comes from underlying blood vessels -- red-colored, blood-filled capillaries are close to the thin skin on your lips. The transition of the reddish-pink outline of your lips to the rest of the skin is called the vermillion border, and it's found only in humans
@askmenow
What percentage of your weight is muscle?
Exercise is very important in maintaining a healthy body and the muscle mass % is a useful indicator to control it. The normal muscle mass percentage on the body weight lies between 38% and 54% for men and between 28% and 39% for women depending on age and physical activity level.
@askmenow
Exercise is very important in maintaining a healthy body and the muscle mass % is a useful indicator to control it. The normal muscle mass percentage on the body weight lies between 38% and 54% for men and between 28% and 39% for women depending on age and physical activity level.
@askmenow
Why do cats eyes glow at night?
Cats, dogs, and many nocturnal creatures appear to have glowing eyes because the back of their eyeballs include a special reflective layer called the tapetum lucidum. This helps animals (cats in this case) see better in low light by working like a mirror on the retina to reflect the light back through the eyes,
@askmenow
Cats, dogs, and many nocturnal creatures appear to have glowing eyes because the back of their eyeballs include a special reflective layer called the tapetum lucidum. This helps animals (cats in this case) see better in low light by working like a mirror on the retina to reflect the light back through the eyes,
@askmenow
Is natural gas heavier or lighter than air?
Lighter-than-air natural gas (methane) should not be confused with liquefied petroleum gas. This gas is more commonly called L.P., bottle gas, propane, butane and various other trade names. Liquefied petroleum gases are all heavier than air and will collect in low places when not confined.
@askmenow
Lighter-than-air natural gas (methane) should not be confused with liquefied petroleum gas. This gas is more commonly called L.P., bottle gas, propane, butane and various other trade names. Liquefied petroleum gases are all heavier than air and will collect in low places when not confined.
@askmenow
Why does the moon control the tides?
The tides are due to the gravitational pull of the Moon and the Sun on the Earth. Because the gravitational force decreases as the distance squared, the part of the Earth that is closer to the Moon or the Sun is pulled a little extra and a bulge is created.
@askmenow
The tides are due to the gravitational pull of the Moon and the Sun on the Earth. Because the gravitational force decreases as the distance squared, the part of the Earth that is closer to the Moon or the Sun is pulled a little extra and a bulge is created.
@askmenow
How long does it take to recover from giving blood?
Your body will replace the blood volume (plasma) within 48 hours. It will take four to eight weeks for your body to completely replace the red blood cells you donated. The average adult has eight to 12 pints of blood. You will not notice any physical changes related to the pint you donated.
@askmenow
Your body will replace the blood volume (plasma) within 48 hours. It will take four to eight weeks for your body to completely replace the red blood cells you donated. The average adult has eight to 12 pints of blood. You will not notice any physical changes related to the pint you donated.
@askmenow
How many inches is a newborn baby's head?
The bones in your baby's skull are still growing together, and the skull is growing faster during the first four months than at any other time in her life. The average newborn's head circumference measures about 13 3⁄4 inches (35 cm), growing to about 15 inches (38 cm) by one month.
@askmenow
The bones in your baby's skull are still growing together, and the skull is growing faster during the first four months than at any other time in her life. The average newborn's head circumference measures about 13 3⁄4 inches (35 cm), growing to about 15 inches (38 cm) by one month.
@askmenow
How high are the clouds?
Low-level clouds lie below 6,500 feet (2,000 meters). Meteorologists refer to them as stratus clouds. They're often dense, dark, and rainy (or snowy) though they can also be cottony white clumps interspersed with blue sky. The most dramatic types of clouds are cumulus and cumulonimbus, or thunderheads.
@askmenow
Low-level clouds lie below 6,500 feet (2,000 meters). Meteorologists refer to them as stratus clouds. They're often dense, dark, and rainy (or snowy) though they can also be cottony white clumps interspersed with blue sky. The most dramatic types of clouds are cumulus and cumulonimbus, or thunderheads.
@askmenow