The Sun Flashcards
1
Q
How much older is the Sun than the Earth?
A
500 million years old
2
Q
Where does the Sun’s energy come from?
A
Nuclear fusion
3
Q
What is nuclear fusion?
A
- Hydrogen atoms fuse together to produce an atom with a larger mass (eg. new chemical element)
- Binding energy stored in hydrogen atoms is released
4
Q
What are all chemical elements larger than?
A
Helium
5
Q
And how were they formed?
A
By nuclear fusion in earlier stars
6
Q
What is it of Hydrogen atoms that fuse together during nuclear fusion?
A
Nuclei
