Why does the Sun get brighter with time?

What will be an ideal response?


As the Sun gets older, it converts more of its hydrogen to helium. As the He content increases, the sun's core becomes denser. This density change leads to a higher temperature within the sun, causing nuclear fusion within the core to proceed faster. The faster rate of fusion leads to a greater luminosity.

Environmental & Atmospheric Sciences

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Most earthquakes occur due to movement on faults because of the release of energy during movement.

a. true b. false

Environmental & Atmospheric Sciences

Earthquakes are most likely to occur near

A) continental shields.
B) areas of volcanic activity in the interior of continents.
C) areas where two tectonic plates meet.
D) heavily populated areas.

Environmental & Atmospheric Sciences

I an oceanic plate-continental plate collision, denser continental crust dives beneath oceanic crust

Indicate whether the statement is true or false

Environmental & Atmospheric Sciences

CFCs take ____ years to reach the stratosphere

a. 1-2 b. 5-10 c. 11-20 d. 21-30 e. 31-50

Environmental & Atmospheric Sciences