1. Name the two main motions of the Earth. 2. What will happen if the Earth does not revolve around the Sun? 3. There is a test match between India and West Indies in the West Indies. When will you watch the match - during the day or at night? 4. What is the length and direction of your shadow in the morning, afternoon and evening? No. Morning 8 am (Direction) Long/ Short At 12 noon (Direction) Long/ Short Evening 5 pm Long Short (Direction) 5. 'The Sun is never overhead in London and there is sunlight till 8 o'clock in the evening whereas the Sun is overhead in Singapore'. Why?
Answers
Answer:
revolutionary motion of the earth
Answer:
1. As you know that the earth has two types of motions, namely rotation and revolution.
2. The escape velocity of the Earth is about 11 km/s. In other words, anything on the Earth's leading side would fly off into space, continuing along the Earth's orbital path around the sun. ... Without the outward centripetal force to counteract the inward pull of gravity, the Earth would begin falling towards the sun.
3. during night
4. Shadows are longer in the morning and evening and short in the noon because the sun rays are slanting in the morning and evening whereas at noon it is just above our head. The size of the shadow depends on the position of the object from the source of light.
5. The reason, The Sun is never overhead in London and there is sunlight till 8 p.m. whereas the Sun is overhead in Singapore, the earth revolves around the sun on the same band on its axis. Due to this north pole comes in front of the sun at regular intervals.
Explanation: