Answer:Periods of Earth's history with extensive sea ice result in enhanced albedo
Explanation:
Answer:
The hawaiian island is unique island located in chain of most active volcanoes on earth, the easternmost Big island consists of 5 major volcanoes in the pacific ocean, which remain active as the rest of the tail islands.
Explanation:
The five major islands are Kohala, Mauna Kea, Kailua, Mauna loa, Hualalai there being active and one extinct and one dominant. Because Of these volcanic eruptions the whole island is the main administrative unit and encompasses the entire Hawaiian country i.e 62.7 % of states also this consists of submarine volcanoes and massive ridges.
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.
The answer is D. The Ganges is too polluted (bathing, burial, travel) to actually drink from. The Indians think of the Ganges of a religious river, therefore scattering the ashes of their dead ones and bathing the worshippers in the water.
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By observing how seismic waves are absorbed and refracted, scientist have been able to work out where the properties of the earth change dramatically. our understanding of the internal structures of the earth and the size of its core is based on these observations.
basically:
size of core
structure of the earth I.e. the layers of the earth
and I think the last one is how the internal structure is changing? not sure on the last one but its still a solid guess.
