structure of the sun

The temperature of the sun is-----------

• 15000000 degrees C

• 50000000 degrees C

• 2000000 degrees C

• 150000000 degrees C

The final product of nuclear fusion is about ......... than the hydrogen nuclei that combined to form it.

• 0.77% less

• 0.07% more

• 0.7% less

• 0.7% more

which of these 2 pictures is a diagram nuclear fusion?

• 
• 

what is the product of the second step of nuclear fusion?

• helium

• stable helium

• rare helium

• 2 protons and 2 neutrons combination

The temperature of ........... is 2000000 to 7000000 degrees C

• radioactive zone

• radiative zone

• radiate zone

• raidiative zone

about how long ago did scientists discover that the sun's energy is quite different from fire?

• a 1000 years ago

• a 100000 years ago

• more than 100 years ago

• less than a 100 years ago

what are the three layers of the sun's atmosphere?

• photosphere

• chromosphere

• core

• corona

what is one layer of the sun's interior?

• photosphere

• sunspot

• convective zone

when will the corona be visible to human eyes?

• during solar eclipse

• during lunar eclipse

The sun is mostly made up of..........

• hydrogen

• oxygen

• plasma

• carbon