Science (Chapter 9 - Earth and Science)
Visual Observations : Using our eyes only, without relying on any instrument, what phenomena can we observe?
The movement of the starts in the sky
the alternation between day and night
the change in seasons
the phases of the moon
what are instruments used to observe?
telescope
satellites
What is the symbol for Light years and Astronomical unit?
AU & LY
What celestial bodies does our universe have?
Stars
Planets
Dwarf planets
satellites
asteroid & comets