Answer:

I learned about the motions of earth

I need to learn this because It is very useful in my daily activities

I can use this in my day by day activities by like the Earth's Rotation its axis gives us day and night, and revolution around the sun gives us seasons. Even going back to the most ancient known civilizations across the planet, humans have used our perception of the night sky to develop calendars and measure the passage of time. Time essentially controls our daily lives, yet we rarely attribute our clocks to the study of astronomy.