1. Water kept in broad vessels evaporates faster than the water kept in a narrow vessel why?
2. On a hot sunny day on a sea shore, the sand on the shore will be very hot and the seawater will be cool why?
3. Rice tastes sweet when chewed Why?
4. What are the factors that causes seasons on the Earth?
5. Why Venus is also called the morning star or evening star?
Answers
1. We know that water evaporates much when it is exposed to the environment. The water evaporates faster in broad vessels because the surface area of the vessel is larger than the other.
2. We know that energy is used to heat up something. Much more energy is used to heat up the water than sand in the shore. That's why On a hot sunny day on a sea shore, the sand on the shore will be very hot and the seawater will be cool.
3. That's because of our salivary gland. Whenever we chew rice or grains we feel it sweeter because our salivary gland in the mouth produces saliva and that saliva converts the starch in rice into sweeter.
4. Our tilted axis causes seasons on the earth.
5. When Venus is on one side of the sun, its brightness enters into view shortly after the sun sets when the sky is dark to make it visible when the sun just goes down, Venus at its brightest becomes visible in minutes. So, it is called the evening star when Venus is at the sun's other side. ( Only Q5 is sourced from the internet)
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Answer:
1. We know that water evaporates much when it is exposed to the environment. The water evaporates faster in broad vessels because the surface area of the vessel is larger than the other.
2. We know that energy is used to heat up something. Much more energy is used to heat up the water than sand in the shore. That's why On a hot sunny day on a sea shore, the sand on the shore will be very hot and the seawater will be cool.
3. That's because of our salivary gland. Whenever we chew rice or grains we feel it sweeter because our salivary gland in the mouth produces saliva and that saliva converts the starch in rice into sweeter.
4. Our tilted axis causes seasons on the earth.
5. When Venus is on one side of the sun, its brightness enters into view shortly after the sun sets when the sky is dark to make it visible when the sun just goes down, Venus at its brightest becomes visible in minutes. So, it is called the evening star when Venus is at the sun's other side. ( Only Q5 is sourced from the internet)
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Explanation: