Which is hotter a red star or a blue star Why?

Which is hotter a red star or a blue star Why?

They are red because they emit red light, which is lower in energy than blue light. Energy in turn, is proportional to temperature, which means that higher energy corresponds to higher temperatures. Answer 6: Red stars are much cooler than blue stars.

Why is red light warmer than blue?

Red light has a longer wavelength than blue light; this means, blue light has a higher frequency than red light. Since there is more energy in higher frequencies, theoretically, blue light is warmer than red light.

How hot are blue stars?

between 10,000 K and 50,000 K.
The hottest stars are blue, with their surface temperatures falling anywhere between 10,000 K and 50,000 K.

Is blue or red hotter?

Hotter fires burn with more energy which are different colors than cooler fires. Although red usually means hot or danger, in fires it indicates cooler temperatures. While blue represents cooler colors to most, it is the opposite in fires, meaning they are the hottest flames.

Is blue or red warmer?

As the physical temperature of the object rises, color transitions from red (long wavelengths – low energy) to blue (short wavelengths – high energy) through ROYGBIV (red, orange, yellow, green, blue, indigo, violet). When it comes to light sources, physically, blue is warmer than red.

Is a blue star hotter than a Red Star?

Then a blue star is HOTTER than a RED star. The temperature of a blue star is 40000 Kelvin degrees, the temperature of a red star is 3500 Kelvin. Red stars are cooler.

Why are stars red and water blue in color?

While fire can come in all sorts of colors and water is colorless in itself, they are often found in nature under circumstances that let them appear red and blue. That blue light has a higher frequency, therefore more enery and therefore hotter stars – e.g. the ones emitting more energy – appear blue is an entirely different matter.

What is a Red Star?

A red star is a star that has expanded from it’s previous stable state. Its core is more and more filled with Iron. Hence the Red color. When this Red star completely runs out of fuel, it shrinks to become a very tiny shining state sometimes called a blue star, they are much cooler than the original states.

What is the temperature of a red star in Kelvin?

Then a blue star is HOTTER than a RED star. The temperature of a blue star is 40000 Kelvin degrees, the temperature of a red star is 3500 Kelvin. Red stars are cooler. They are red because they emit red light, which is lower in energy than blue light.