EVERYDAY SCIENCE

SCIENCE

PHYSICAL SCIENCES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
It is possible to see that stars vary in colour. These colour differences reflect differences in.
A
Size
B
Density
C
Atmosphere
D
Temperature
Explanation: 

Detailed explanation-1: -The hotter a star, the bluer and whiter its color will be. And the colder it is, the redder it will be. The hottest stars have temperatures above 40.000 Kelvin (K), and the coldest stars around 2.000 K.

Detailed explanation-2: -As a star’s temperature increases, as a result of there being more gas in the star – and hence more fuel to burn – it becomes hotter. Its colour changes from orange, through yellow, to white. The hottest stars are blue, with temperatures up to 40, 000ºC.

Detailed explanation-3: -Stars are different colors-white, blue, yellow, orange, and red. The color indicates the star’s temperature in its photosphere, the layer where the star emits most of its visible light.

Detailed explanation-4: -Temperature – cooler stars are red, warmer ones are orange through yellow and white. The hottest stars shine with blue light.

Detailed explanation-5: -The color of a star is linked to its surface temperature. The hotter the star, the shorter the wavelength of light it will emit. The hottest ones are blue or blue-white, which are shorter wavelengths of light. Cooler ones are red or red-brown, which are longer wavelengths.

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