The one that is blue is a hotter star
When studying the temperature of a star, the scientists first look for color. If the color is more reddish, it’s cooler; if it’s yellow/orange, it is a warmer star; and if it’s a blue star, it’s a hot star
Because Earth's outer core is liquid and S waves cannot travel trough liquids
Because the orbital period and rotational period are the exact same.
The Aegean Sea occupies an area of sunken land called a graben.
Hope this Helps!
Geographic information systam
its like a scan of the earth
