in an atom electrons move in definite orbits around the nucleus much like planets cirlce the sun.

who said this - I think Bohr

choices are:
Bohr
rutherford
wave model
Thompson
democritius

Bohr is right

An atom is made of positively charged pudding like material through whic hnegatively cahrged particels are scattered

I put thompson -

now I am not sure after reading winnepedia maybe rutherford??

The J.J. Thomson (note the spelling) model was the pudding model. Rutherford was a student of Thomson and discovered alpha particles. In experiemnts after graduating, Rutherford noted that his alpha particle scattering experiments could not be explained by the Thomson model; therefore, he proposed the idea that the mass of the atom was at the center, the center was positively charged, and electrons were somewhere outside the nucleus. (He didn't know about neutrons--they were not discovered until later).

The statement "in an atom electrons move in definite orbits around the nucleus much like planets circle the sun" was indeed proposed by Niels Bohr. Bohr's atomic model, known as the Bohr model or the planetary model, was developed in 1913. According to this model, electrons occupy specific energy levels or shells around the nucleus and move in circular orbits within these energy levels. Bohr's model was a significant contribution to our understanding of atomic structure during that time.