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Electric Current is the flow of electrons. But an electric Circuit is the closed path in which electric current flows.
Posted by Amit Kumar 6 years, 1 month ago
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Washing soda is a whitish, odourless powder. Its chemical formula is Na2CO3 and is better known as sodium carbonate.
Baking soda is a white crystalline compound with a slightly salty taste. Its chemical formula is NaHCO3 and is generally known as sodium bicarbonate.
Posted by Amit Kumar 6 years, 1 month ago
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Meghna Thapar 5 years, 10 months ago
An object is said to be in motion when its position changes with time.
Posted by Amit Kumar 6 years, 1 month ago
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Yogita Ingle 6 years, 1 month ago
Acceleration is defined as : The rate of change of velocity with respect to time.
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The heart is an organ which beats continuously to act as a pump for the transport of blood, which carries other substances with it. The human heart is divided into four chambers. The upper two chambers are called right and left atrium and the lower two chambers are called the right and left ventricles. Right atrium receives carbon dioxide-rich blood from the body. Blood from right atrium enters the right ventricle, which contracts and pumps the blood to the lungs. On the other hand, oxygen-rich blood from the lungs returns to the left atrium. From the left atrium, blood enters left ventricle. Left ventricle contracts and pumps the blood to all parts of the body. Hence, the rhythmic contraction and expansion of various chambers of the heart maintains the transport of oxygen to all parts of the body.
Posted by Amit Kumar 6 years, 1 month ago
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Omm Night Hunter 6 years, 1 month ago
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The white blood cells are also called Leukocytes. These cells act as a defence system against any infections in the human body. They produce a special kind of proteins called antibodies, which identify and fight against the foreign entities invading the human body. These cells are classified further as granulocytes and agranulocytes.
Posted by Amit Kumar 6 years, 1 month ago
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Posted by Amit Kumar 6 years, 1 month ago
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Yogita Ingle 6 years, 1 month ago
Push or pull of an object is considered a force. Force is an external agent capable of changing the state of rest or motion of a particular body. It has a magnitude and a direction.
Posted by Amit Kumar 6 years, 1 month ago
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Yogita Ingle 6 years, 1 month ago
The SI unit of pressure is Pascal (represented as Pa) which is equal to one newton per square metre (N/m-2 or kg m-1s-2). Interestingly, this name was given in 1971. Before that pressure in SI was measured in newtons per square metre.
Posted by Amit Kumar 6 years, 1 month ago
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Yogita Ingle 6 years, 1 month ago
An anemometer is an instrument that measures wind speed and wind pressure. Anemometers are important tools for meteorologists, who study weather patterns
Posted by Siri Nuligommu 6 years, 1 month ago
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Yogita Ingle 6 years, 1 month ago
A laboratory thermometer cannot be used to measure the temperature of a human body because the range of a laboratory thermometer is high generally from –10°C to 110°C, while as normal body temperature in humans is only 37°C. Also laboratory thermometer does not have a kink, so mercury falls on its own which does not give accurate temperature of the human body.
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Fluid Connective Tissue
Blood is a fluid connective tissue composed of 55% plasma and 45% formed elements including WBCs, RBCs, and platelets. Since these living cells are suspended in plasma, blood is known as a fluid connective tissue and not just fluid.
Provides oxygen to the cells
Blood absorbs oxygen from the lungs and transports it to different cells of the body. The waste carbon dioxide moves from the lungs to the blood and is exhaled.
Transports Hormone and Nutrients
The digested nutrients such as glucose, vitamins, minerals, and proteins are absorbed into the blood through the capillaries in the villi lining the small intestine.
The hormones secreted by the endocrine glands are also transported by the blood to different organs and tissues.
Homeostasis
Blood helps to maintain the internal body temperature by absorbing or releasing heat. When the blood vessels react to outside organisms and changes in internal temperature, they expand and contract. This moves the blood and heat closer to or away from the skin surface.
Posted by Arnav Maharwal 6 years, 1 month ago
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An erect image is one that appears right-side up. An erect image is formed by the actual intersection of rays. It is an image in which directions are the same as those in the object.
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Natural Indicator: Indicators that are obtained from naturally occurring substance are called NATURAL INDICATORS. Example: litmus, turmeric, China rose, etc.
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Asexual Reproduction – The new plants are produced without using the seeds. In this process, generally, the leaves, stems and roots participate in reproduction.
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Benedict’s Test is used to test for simple carbohydrates. The Benedict’s test identifies reducing sugars (monosaccharide’s and some disaccharides), which have free ketone or aldehyde functional groups. Benedict’s solution can be used to test for the presence of glucose in urine.
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A lenticel is a porous tissue consisting of cells with large intercellular spaces in the periderm of the secondarily thickened organs and the bark of woody stems and roots of dicotyledonous flowering plants.Lenticels are also present on many fruits, such as apples and pears.
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Omm Night Hunter 6 years, 1 month ago
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