UNIVERSE
THE SUN
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Energy radiates outward from the core as visible light.
|
|
|
Energy is carried inward from the outer layers by convection.
|
|
|
Energy is radiated out from the core first, then carried to the outer layers by convection.
|
|
|
Energy is carried out from the core by convection first, then radiated to the outer layers.
|
Detailed explanation-1: -Scientists use models of the Sun to better understand how it works. The currently accepted model of the Sun indicates that it has a dense core surrounded by different layers. How is energy transferred from the core of the Sun to its outer layers? Energy radiates outward from the core as visible light.
Detailed explanation-2: -Like other stars, the Sun is a dense ball of gas that creates energy through nuclear fusion reactions in the core, creating helium atoms from hydrogen atoms. The Sun radiates different forms of energy, including ultraviolet, infrared, and light energy, out into space.
Detailed explanation-3: -The Sun is a huge ball of hydrogen and helium held together by its own gravity.
Detailed explanation-4: -Scientists use spectroscopy to determine the composition of the Sun. Unlike the Earth, the Sun is made primarily of light elements. It is a fairly typical main sequence star composed of 74% hydrogen, 25% helium.
Detailed explanation-5: -Our Sun is a 4.5 billion-year-old star – a hot glowing ball of hydrogen and helium at the center of our solar system. The Sun is about 93 million miles (150 million kilometers) from Earth, and without its energy, life as we know it could not exist here on our home planet.