Where do the biggest dust storms occur?
Mars is home to the largest and most powerful dust storms ever recorded. Martian dust storms have been known to engulf the entire planet in a haze for months at a time, making it difficult to single out one as being the biggest. Dust and sandstorms on Mars and Earth happen due to temperature differences in the atmosphere. Hot air moves to colder air, and this moving air can pick up tiny debris in arid landscapes. It is not known exactly why storms on Mars can spread so far, however the fact it is such a dusty world probably has something to do with it.
@askmenow
Mars is home to the largest and most powerful dust storms ever recorded. Martian dust storms have been known to engulf the entire planet in a haze for months at a time, making it difficult to single out one as being the biggest. Dust and sandstorms on Mars and Earth happen due to temperature differences in the atmosphere. Hot air moves to colder air, and this moving air can pick up tiny debris in arid landscapes. It is not known exactly why storms on Mars can spread so far, however the fact it is such a dusty world probably has something to do with it.
@askmenow
Why alcohol is added in thermometer?
Ethanol-filled thermometers are used in preference to mercury for meteorological measurements of minimum temperatures and can be used down to −70 °C (-94 °F). The physical limitation of the ability of a thermometer to measure low temperature is the freezing point of the liquid used.
@askmenow
Ethanol-filled thermometers are used in preference to mercury for meteorological measurements of minimum temperatures and can be used down to −70 °C (-94 °F). The physical limitation of the ability of a thermometer to measure low temperature is the freezing point of the liquid used.
@askmenow
How do insects survive winter?
In order to survive winter, insects push the pause button, actually the diapause button.
During diapause an insect's metabolic rate drops to one tenth or less, so it can use stored body fat to survive winter. Also many insects produce alcohols for antifreeze. Their bodies can supercool (reach temperatures below freezing) without forming cell-damaging ice.
@askmenow
In order to survive winter, insects push the pause button, actually the diapause button.
During diapause an insect's metabolic rate drops to one tenth or less, so it can use stored body fat to survive winter. Also many insects produce alcohols for antifreeze. Their bodies can supercool (reach temperatures below freezing) without forming cell-damaging ice.
@askmenow
How Does Anesthesia Work?
Local anesthetics block the nerves that connect a particular body part or region to the brain, preventing the nerves from carrying pain signals to your brain. This renders patients unconscious with no perception or memory of the surgery (though pain from the surgical procedure will be apparent once you wake up).
@askmenow
Local anesthetics block the nerves that connect a particular body part or region to the brain, preventing the nerves from carrying pain signals to your brain. This renders patients unconscious with no perception or memory of the surgery (though pain from the surgical procedure will be apparent once you wake up).
@askmenow
How does light travel down a fibre-optic cable?
At the core of the cable is a strand of plastic or pure optical glass about 0.01mm in diameter. Surrounding it is a highly reflective cladding with a different refractive index to that of the core. The refractive indices of each material are engineered to ensure that light always reflects back off the cladding and is never absorbed by it, regardless of whether the cable is straight or bent round. It's a bit like carrying a torch through a long winding tunnel lined with perfect mirrors.
@askmenow
At the core of the cable is a strand of plastic or pure optical glass about 0.01mm in diameter. Surrounding it is a highly reflective cladding with a different refractive index to that of the core. The refractive indices of each material are engineered to ensure that light always reflects back off the cladding and is never absorbed by it, regardless of whether the cable is straight or bent round. It's a bit like carrying a torch through a long winding tunnel lined with perfect mirrors.
@askmenow
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What are ocean dead zones?
Dead zones get their name from the fact that they can support very few plants and animals. This is due to the absence of oxygen, known as ‘hypoxia’. Hypoxic conditions can materialise in lakes and other standing bodies of water, but they can also occur in large areas of the ocean. The main cause of a dead zone is eutrophication – when minerals, usually of agricultural origin, are washed into the water. The heightened nutrient levels stimulate huge blooms of algae on the surface of the water. This then restricts oxygen making its way into the water, which eff ectively smothers everything living beneath it. Due to the agricultural nature of the nutrient runoff , dead zones often appear close to the shore. There are around 146 known coastal dead zones around the world, with the largest ones located in the Baltic Sea and the Gulf of Mexico.
@askmenow
Dead zones get their name from the fact that they can support very few plants and animals. This is due to the absence of oxygen, known as ‘hypoxia’. Hypoxic conditions can materialise in lakes and other standing bodies of water, but they can also occur in large areas of the ocean. The main cause of a dead zone is eutrophication – when minerals, usually of agricultural origin, are washed into the water. The heightened nutrient levels stimulate huge blooms of algae on the surface of the water. This then restricts oxygen making its way into the water, which eff ectively smothers everything living beneath it. Due to the agricultural nature of the nutrient runoff , dead zones often appear close to the shore. There are around 146 known coastal dead zones around the world, with the largest ones located in the Baltic Sea and the Gulf of Mexico.
@askmenow
Can a Snail survive if its shell is broken?
Yes, provided that the damage isn’t too severe. Snailskeep a store of calcium in their bodies, in the form of dissolved salts, that they can mobilise for repair jobs. Special cells, called amoebocytes, will congregate around the crack and form a living elastoplast to hold the broken edges together. Over the course of a week or two, these cells are infused with calcium and gradually harden. In the case of more drastic repairs, the snail may actually borrow calcium from the rest of the shell by slightly thinning the walls from inside, to provide enough building material. While a snail is repairing its shell, it is much more vulnerable to predators and drying out, so it will stop eating and hide away. The snail’s survival depends on whether it can repair the damage before it dies of desiccation, hunger or infection.
@askmenow
Yes, provided that the damage isn’t too severe. Snailskeep a store of calcium in their bodies, in the form of dissolved salts, that they can mobilise for repair jobs. Special cells, called amoebocytes, will congregate around the crack and form a living elastoplast to hold the broken edges together. Over the course of a week or two, these cells are infused with calcium and gradually harden. In the case of more drastic repairs, the snail may actually borrow calcium from the rest of the shell by slightly thinning the walls from inside, to provide enough building material. While a snail is repairing its shell, it is much more vulnerable to predators and drying out, so it will stop eating and hide away. The snail’s survival depends on whether it can repair the damage before it dies of desiccation, hunger or infection.
@askmenow
What is Human Trafficking?
Human trafficking involves recruitment, harbouring or transporting people into a situation of exploitation through the use of violence, deception or coercion and forced to work against their will.
In other words, trafficking is a process of enslaving people, coercing them into a situation with no way out, and exploiting them.
People can be trafficked for many different forms of exploitation such as forced prostitution, forced labour, forced begging, forced criminality, domestic servitude, forced marriage, and forced organ removal.
@askmenow
Human trafficking involves recruitment, harbouring or transporting people into a situation of exploitation through the use of violence, deception or coercion and forced to work against their will.
In other words, trafficking is a process of enslaving people, coercing them into a situation with no way out, and exploiting them.
People can be trafficked for many different forms of exploitation such as forced prostitution, forced labour, forced begging, forced criminality, domestic servitude, forced marriage, and forced organ removal.
@askmenow
What is Electric Blanket?
An electric blanket is a bed covering with a built-in heating element so that a sleeper can maintain a desired temperature even in a cold room. Many consumers prefer electric blankets because their use can reduce home heating costs. The sophisticated temperature controls of modern electric blankets can sense changes in skin and air temperature and adjust settings accordingly. The most advanced model blankets are programmable, so they can pre-warm the bed at a certain time and shut off at a certain hour. They are also able to adjust temperature for the needs of two people in the same bed. Some blankets even compensate for the different heat needs of different parts of the body; for instance, sending more heat to the sleeper's feet while leaving the head area cooler. Approximately 4.5 million electric blankets are sold in the United States annually.
@askmenow
An electric blanket is a bed covering with a built-in heating element so that a sleeper can maintain a desired temperature even in a cold room. Many consumers prefer electric blankets because their use can reduce home heating costs. The sophisticated temperature controls of modern electric blankets can sense changes in skin and air temperature and adjust settings accordingly. The most advanced model blankets are programmable, so they can pre-warm the bed at a certain time and shut off at a certain hour. They are also able to adjust temperature for the needs of two people in the same bed. Some blankets even compensate for the different heat needs of different parts of the body; for instance, sending more heat to the sleeper's feet while leaving the head area cooler. Approximately 4.5 million electric blankets are sold in the United States annually.
@askmenow
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What is Torpedo?
The modern Torpedo is a self-propelled weapon with an explosive warhead, launched above or below the water surface, propelled underwater towards a target, and designed to detonate either on contact with its target or in proximity to it.
Historically, it was called an automotive, automobile, locomotive or fish torpedo; colloquially called a fish. The term torpedowas originally employed for a variety of devices, most of which would today be called mines. From about 1900, torpedo has been used strictly to designate an underwater self-propelled weapon.
@askmenow
The modern Torpedo is a self-propelled weapon with an explosive warhead, launched above or below the water surface, propelled underwater towards a target, and designed to detonate either on contact with its target or in proximity to it.
Historically, it was called an automotive, automobile, locomotive or fish torpedo; colloquially called a fish. The term torpedowas originally employed for a variety of devices, most of which would today be called mines. From about 1900, torpedo has been used strictly to designate an underwater self-propelled weapon.
@askmenow
Where does longitude begin and end?
Consecutive degrees of longitude are 60 miles apart at the equator, and all come together at the North Pole and the South Pole. These are 360 degrees of longitude - 180 degrees lie east, and 180 degrees lie west of Greenwich, England, an arbitrary starting point used by all mapmakers.
@askmenow
Consecutive degrees of longitude are 60 miles apart at the equator, and all come together at the North Pole and the South Pole. These are 360 degrees of longitude - 180 degrees lie east, and 180 degrees lie west of Greenwich, England, an arbitrary starting point used by all mapmakers.
@askmenow
How many taste buds are on your tongue?
Those tiny hairs send messages to the brain about how something tastes, so you know if it's sweet, sour, bitter, or salty. The average person has about 10,000 taste buds and they're replaced every 2 weeks or so.
@askmenow
Those tiny hairs send messages to the brain about how something tastes, so you know if it's sweet, sour, bitter, or salty. The average person has about 10,000 taste buds and they're replaced every 2 weeks or so.
@askmenow
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Which is the only planet that rotates clockwise?
If you were to look down at the plane of the solar system from its 'north pole' you would see the planets orbiting the Sun counter clockwise, and rotating on their axis counterclockwise. Except for Venus. Venus would be rotating clockwise as it orbited the Sun counterclockwise.
@askmenow
If you were to look down at the plane of the solar system from its 'north pole' you would see the planets orbiting the Sun counter clockwise, and rotating on their axis counterclockwise. Except for Venus. Venus would be rotating clockwise as it orbited the Sun counterclockwise.
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How many teeth are in a dogs mouth?
The average adult dog has 42 teeth: 22 in the mandible or lower jaw, and 20 in the maxilla or upper jaw. In each jaw there are 6 incisors, 2 canines, and 8 premolars. There are 6 molars in the lower jaw and 4 in the upper jaw. In adult dogs, approximate age can be determined by checking the wear on the incisors.
@askmenow
The average adult dog has 42 teeth: 22 in the mandible or lower jaw, and 20 in the maxilla or upper jaw. In each jaw there are 6 incisors, 2 canines, and 8 premolars. There are 6 molars in the lower jaw and 4 in the upper jaw. In adult dogs, approximate age can be determined by checking the wear on the incisors.
@askmenow
When did Greenwich mean time start?
Greenwich Mean Time (GMT) was adopted as the world's time standard at the Washington Meridian Conference in 1884. This conference also established Universal Time, from which the international 24-hour time-zone system grew. This is why all time zones refer back to GMT on the prime meridian.
@askmenow
Greenwich Mean Time (GMT) was adopted as the world's time standard at the Washington Meridian Conference in 1884. This conference also established Universal Time, from which the international 24-hour time-zone system grew. This is why all time zones refer back to GMT on the prime meridian.
@askmenow
What type of fish is sushi made from?
Commonly used fish are tuna (maguro, shiro-maguro), Japanese amberjack, yellowtail (hamachi), snapper (kurodai), mackerel (saba), and salmon (sake). The most valued sushi ingredient is toro, the fatty cut of the fish.
@askmenow
Commonly used fish are tuna (maguro, shiro-maguro), Japanese amberjack, yellowtail (hamachi), snapper (kurodai), mackerel (saba), and salmon (sake). The most valued sushi ingredient is toro, the fatty cut of the fish.
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Can clownfish change gender?
Clownfish, wrasses, moray eels, gobies and other fish species are known to change sex, including reproductive functions. A school of clownfish is always built into a hierarchy with a female fish at the top. When she dies, the most dominant male changes sex and takes her place.
@askmenow
Clownfish, wrasses, moray eels, gobies and other fish species are known to change sex, including reproductive functions. A school of clownfish is always built into a hierarchy with a female fish at the top. When she dies, the most dominant male changes sex and takes her place.
@askmenow
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Do turtles breathe under water?
As sea turtles are air breathing reptiles, they need to surface to breathe. Sea turtles can hold their breath for several hours, depending upon the level of activity. A resting or sleeping turtle can remain underwater for 4-7 hours.
@askmenow
As sea turtles are air breathing reptiles, they need to surface to breathe. Sea turtles can hold their breath for several hours, depending upon the level of activity. A resting or sleeping turtle can remain underwater for 4-7 hours.
@askmenow
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What temperature does water have to be to kill bacteria?
Some bacteria are actually resistant to the temperature of boiling water (100 degrees C.). To kill all the bacteria, you need to raise the temperature to about 121 degrees C. To get water to this temperature, you must heat it under pressure.
@askmenow
Some bacteria are actually resistant to the temperature of boiling water (100 degrees C.). To kill all the bacteria, you need to raise the temperature to about 121 degrees C. To get water to this temperature, you must heat it under pressure.
@askmenow