NCERT Book Class 7 Science (Curiosity) Chapter 12 Earth, Moon, and the Sun

Earth, Moon, and
12 the Sun
One morning in Kanniyakumari, Tamil Nadu, 12-year-old
Rashmika was eagerly cycling to school. She was excited. That was
the day her science teacher had dedicated a class for students to
share and try to explain interesting observations.
Rashmika had been noticing that the coconut tree shadows
were long in the morning but shorter in the afternoon on her
way back. She thought about it and decided that the size of the
shadows changed because the Sun moved across the sky during
the day. But she also remembered learning that the Earth moved
around the Sun (in chapter ‘Beyond Earth’ in the Grade 6 Science
textbook Curiosity) so she was puzzled. She wondered — does the
Sun move in the sky? Or does the Earth move?