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The hotter the star, the brighter. Ex: A stove

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What happens to the brightness of main sequence stars as they get hotter?

As they get hotter, they usually get brighter.


What happens to the temperature of main sequence stars as the brightness increases?

Stars in their Main Sequence stage have generally proportional temperature and color. The color-temperature spectrum of a star ranges from red (2000-3000 Kelvins) to blue (25,000+ Kelvins). Red Giants have a relatively high luminosity and low temperatures. White dwarfs have relatively low luminosity and high temperatures. Main Sequence stars are proportional temperature/color therefore they can vary from relatively high luminosity and temperature to relatively low luminosity and temperature.Absolute Magnitude is the star's genuine brightness. It's apparent magnitude is it's brightness from earth. A star can only be accurately classified once data on it's absolute magnitude is acquired.


What happens to the temperature of the troposphere as altitude increase?

In the troposphere, the temperature generally decreases with increasing altitude. This decline occurs at an average rate of about 6.5 degrees Celsius per kilometer (or approximately 3.6 degrees Fahrenheit per 1,000 feet). The decrease in temperature is primarily due to the decreasing pressure and density of air at higher altitudes, which affects how heat is retained. This trend continues until the boundary with the stratosphere, where the temperature begins to increase with altitude.


What happens to temperature as the angle at which the sun's rays strike the earth's surface increases. As the angle decreases. What happens to the length of the shadows at the same time?

As the angle at which the sun's rays strike the Earth's surface increases, the temperature tends to decrease. As the angle decreases, temperature tends to increase. At the same time, as the sun's angle decreases, shadows appear longer because the light is being cast at a greater angle.


If the core temp of a star decreases what happens to the radius?

If the core temperature of a star decreases, it will contract, causing the core to become denser. This contraction may lead to an increase in temperature in the outer layers, causing the star to expand its radius to re-establish equilibrium.