Eclipse occurs. Because of(i) Light travels in a straight line.(iii) T...
Light travels in a straight line. At times the earth comes between the sun and the moon the moon comes between the sun and the earth. At such times, the one in the middle casts a shadow that partially or wholly hides the other from the sun. This is called an eclipse. An eclipse occurs because the earth revolves around the sun and the moon revolves around the earth.
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Eclipse occurs. Because of(i) Light travels in a straight line.(iii) T...
Eclipse is a natural phenomenon that occurs when one celestial body, such as the moon, passes between another celestial body, such as the sun, and a third celestial body, such as the Earth. In this case, the correct options that contribute to the occurrence of an eclipse are (i) Light travels in a straight line, (ii) The Earth revolves around the sun and the moon revolves around the Earth, and (iv) The moon reflects sunlight. Let's understand each of these factors in detail:
(i) Light travels in a straight line:
- Light is a form of electromagnetic radiation that travels in a straight line until it interacts with an object or is affected by the gravitational pull of a celestial body.
- This means that the light from the sun travels in a straight line towards the Earth, and the light reflected by the moon also travels in a straight line towards the Earth.
(ii) The Earth revolves around the sun and the moon revolves around the Earth:
- The Earth orbits or revolves around the sun in an elliptical path, completing one orbit in approximately 365.25 days.
- The moon, on the other hand, revolves around the Earth in a slightly elliptical path, completing one orbit in approximately 27.3 days.
- This motion of the Earth and the moon is what brings them into alignment with the sun during an eclipse.
(iii) The Earth rotates on its axis:
- The Earth also rotates or spins on its axis, completing one rotation in approximately 24 hours.
- This rotation causes day and night on Earth and plays a role in the occurrence of eclipses.
(iv) The moon reflects sunlight:
- The moon does not emit its own light but reflects the sunlight that falls on it.
- This reflected sunlight is what makes the moon visible to us on Earth and is an important factor in the occurrence of an eclipse.
In conclusion, the correct options for the occurrence of an eclipse are (i) Light travels in a straight line, (ii) The Earth revolves around the sun and the moon revolves around the Earth, and (iv) The moon reflects sunlight. These factors combined create the alignment necessary for an eclipse to occur.
Eclipse occurs. Because of(i) Light travels in a straight line.(iii) T...
B
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