Lesson 3 - The Earth Flashcards
(7 cards)
Why did the ancient Greeks believe the Earth was at the centre of the Solar System?
They believed this because when they looked at the sky, they saw the Sun, Moon, and Stars, so they assumed that since everything could be seen by Earth then Earth was at the centre.
What does ‘geocentric’ mean?
Geocentric is the idea of the the Earth being at the centre of the solar system.
What does ‘heliocentric’ mean?
Heliocentric is the idea of where the Sun is in the middle.
Add the missing word: Earth spins on its ____?
Axis
Why was the Earth put onto a tilt?
A massive asteroid (Theia) collided with Earth, resulting it to tilt.
How long does it take for Earth to complete one full spin?
It takes 24 hours
Where does the Sun rise and set?
The Sun rises in the East and sets in the West
