What is fission and fusion?

http://www.atomicarchive.com/Fission/Images/fission.jpg

https://geoinfo.nmt.edu/resources/uranium/images/fusion.jpg

Fission: During fission the nucleus of an atom splits into two or more parts

Fusion: hydrogen atoms combine to form helium atoms and release energy in the sun. Then travels from the sun into the earth

app.discoveryeducation.com/me/students#v=tab1

Fission

Fusion