Physics Quiz - Grade 12

The sun is primarily composed of hydrogen and helium

• True

• False

The main source of the sun’s energy is nuclear fission.

• True

• False

• Nuclear Fusion

The layer of the sun that is responsible for emitting most of the visible light is corona.

• True

• False, Photosphere

Helium is the element primarily produced in the sun's core as a result of nuclear fusion.

• True

• False

Solar flares are features of the sun that appear as dark spots on its surface due to lower temperature.

• True

• False, Sunspots

Which of the following is a step in the proton-proton chain?

• Two protons fuse to form deuterium

• A deuterium nucleus fuses with a proton to form helium-3

• Helium-3 nuclei combine to form helium-4

• All of the above

In the sun’s structure diagram, which letter represents the radiative zone?

• D

• E

• F

• G

In the sun’s structure diagram, letter B represents the _______.

• radiative zone

• convection zone

• corona

• photosphere

In the sun’s structure diagram, letter E represents the _______?

• radiative zone

• convection zone

• corona

• photosphere

In the sun’s structure diagram, letter D represents the _______?

• radiative zone

• convection zone

• corona

• core