1. Based on last term's topic, we found out that salt can both be useful and harmful. Why is this so?
Salt can be useful because body needs a tiny bit of salt to work properly. Salt acts as an electrolyte and it needed to transfer information from the brain to the nerves and muscles. Salt also can be harmful because too much salt can stop the brain, heart and muscles from working properly. Water retention and high blood pressure will also happened. When a person have water retention, his heads and face becoming bigger and difficult when making a fist. And high blood pressure which can lead to a heart attack or stroke.
2. What is " hyponatremia"?
Hyponatremia is the medical term of a dangerously low level of sodium in the body. it also called water intoxication. When a person experiences hyponatremia, the results can be fatal if the condition is not promptly addressed. Hyponatremia is generally the result of drinking excessive amounts of plain water, because when the person sweat or defecate the body lose some of the sodium. And when he drank excessive amounts of water, it causes a low concentration of sodium in the blood.
3. Why do people say that it is impossible to drown in the Dead Sea?
Because there are more salt then the water in the dead sea. Water is less dense to salt, so that means the more salt is dissolved in water, the denser it becomes. People will float in the dead sea because the water is much more dense and heavy than regular water, and this is a result of all of the salt that has dissolved in the dead sea. Objects in water stop sinking when they displace a mass of water equal to their body mass.
4. There are two ways to harvest (get) salt. Name these two ways and explain how salt is extracted.
Evaporate from sea water & solution mining from salt mines.
From sea water: First, the sea water is left to flow in a series of shallow basins, separated by dikes and wooden obstacles. The heat from sun will evaporate the water from the sea water, so it left with salt. This process lasts 90 to 10 days in the tropical climate.
Solution mining: People found the rock salt, and drilled a large hole. Then, they forced the river water under ground. When the water dissolved in the salt rock, it become brine. Then, the machine sucks the brine up. Then, the brein dries, and left the salt.
5. During winter, salt sprinkled on the snow. Why?
Because they want to melt the snow. Salt can change the freezing point of the snow, so when salt sprinkled on the snow, the freezing point become higher, then the snow will melt.
6. Salt is compound made of two elements. What are these elements?
Sodium and Chlorine
7.What is "solution mining" and how does it work?
Solution mining is a way to get salt. River water is forced under ground, and when it dissolved the salt rock, it becomes brine. The brine are sucks up and dries, then it becomes salt.
8. What is a "sink hole" and how is t formed?
A sinkhole is a large swallow hole that people can see. It froms when there is underground water dissolves minerals. When the hole get larger, the ground might collapse because the ground is too thin to support the building on top of it.
Salt can be useful because body needs a tiny bit of salt to work properly. Salt acts as an electrolyte and it needed to transfer information from the brain to the nerves and muscles. Salt also can be harmful because too much salt can stop the brain, heart and muscles from working properly. Water retention and high blood pressure will also happened. When a person have water retention, his heads and face becoming bigger and difficult when making a fist. And high blood pressure which can lead to a heart attack or stroke.
2. What is " hyponatremia"?
Hyponatremia is the medical term of a dangerously low level of sodium in the body. it also called water intoxication. When a person experiences hyponatremia, the results can be fatal if the condition is not promptly addressed. Hyponatremia is generally the result of drinking excessive amounts of plain water, because when the person sweat or defecate the body lose some of the sodium. And when he drank excessive amounts of water, it causes a low concentration of sodium in the blood.
3. Why do people say that it is impossible to drown in the Dead Sea?
Because there are more salt then the water in the dead sea. Water is less dense to salt, so that means the more salt is dissolved in water, the denser it becomes. People will float in the dead sea because the water is much more dense and heavy than regular water, and this is a result of all of the salt that has dissolved in the dead sea. Objects in water stop sinking when they displace a mass of water equal to their body mass.
4. There are two ways to harvest (get) salt. Name these two ways and explain how salt is extracted.
Evaporate from sea water & solution mining from salt mines.
From sea water: First, the sea water is left to flow in a series of shallow basins, separated by dikes and wooden obstacles. The heat from sun will evaporate the water from the sea water, so it left with salt. This process lasts 90 to 10 days in the tropical climate.
Solution mining: People found the rock salt, and drilled a large hole. Then, they forced the river water under ground. When the water dissolved in the salt rock, it become brine. Then, the machine sucks the brine up. Then, the brein dries, and left the salt.
5. During winter, salt sprinkled on the snow. Why?
Because they want to melt the snow. Salt can change the freezing point of the snow, so when salt sprinkled on the snow, the freezing point become higher, then the snow will melt.
6. Salt is compound made of two elements. What are these elements?
Sodium and Chlorine
7.What is "solution mining" and how does it work?
Solution mining is a way to get salt. River water is forced under ground, and when it dissolved the salt rock, it becomes brine. The brine are sucks up and dries, then it becomes salt.
8. What is a "sink hole" and how is t formed?
A sinkhole is a large swallow hole that people can see. It froms when there is underground water dissolves minerals. When the hole get larger, the ground might collapse because the ground is too thin to support the building on top of it.
RSS Feed