I know that question #4 is B.) Sun
Are their any multiple answer's ?
Answer:
caliph - successor to Muhammad
Zionism - the movement to establish a Jewish state
Aliyah - immigrations of Jews to the holy land
diaspora - a group that is scattered outside it traditional homeland
Explanation:
After Muhammed died he was succeeded by Abu Bakr, the first of the caliphs. Because of internal conflicts, from 661 new Caliphate - Umayyad was established, although Abbasid Caliphate made even larger impact.
Jewish diaspora was created after the exile of Jews, from their homeland, most notably during the Babylonian captivity. They were scattered across the globe, but with the rise of Zionism movement in the second half of 19th Century, idea to return Jews to their homeland started spreading. Aliyah happened once more, as in the times of Abraham and Moses.
Answer:
As you already know, sunlight (solar energy, or energy from the Sun) is the primary source of energy for all processes that occur in Earth's atmosphere and hydrosphere. This means that solar energy is also the primary driver of winds and ocean currents .
Explanation:
Answer:
Two stars (a and b) can have the same luminosity, but different surface area and temperature if the following condition is met:
(T_a^4)(R_a^2) = (T_b^4)(R_b^2)
Explanation:
The luminosity of a star is the total energy that produces in one second. It depends on the size of the star and its surface temperature.
L = σ(T^4)(4πR^2)
L is the luminosity f the star, T is the temperature of the surface of the star and R is its radius.
Two stars can have the same luminosity if the relation between the radius and the surface temperature is maintained.
To see this lets suposed you have 2 stars, a and b, and the luminosities of each one of them:
L_a = σ(T_a^4)(4πR_a^2)
L_b = σ(T_b^4)(4πR_b^2)
you can assume that L_a and L_b are equal:
σ(T_a^4)(4πR_a^2) = σ(T_b^4)(4πR_b^2)
Now, you can cancel the constants:
(T_a^4)(R_a^2) = (T_b^4)(R_b^2)
as long as this relation between a and b is true, then the luminosity can be the same.
