A mechanical engineer.
physics
A scientist would probably be a physicist or a chemist, but engineers can also study energy, and designing heat engines would be an engineers job. A specialist in this field would be a thermodynamicist.
Yes, they do. I know for a fact, because in 'The Answers Book 1', it says that they study something that starts with 'u' having a gas inside it and eventually turning into lead. It's a kind of radioactive rock, I think. Plus, isn't that kind of stuff the kind of stuff that scientists study?
physics
what is the scientist that studies motions? A Physicist
a physist
bio
biologist
meteorologist
physics
a biologist
They study diseases.
a geneticist
Biologists.
Neurologists study the nervous system.
Geologist. Possibly a chemist.
Geologist