RUTHERFORD 's experiment

Which kinds of radiation did Rutherford discover and named?
1. alpha and beta particles
2. X-rays
3. radioactivity
Which young scientist was the first one to work on the gold-foil experiment?
1. Rutherford
2. Geiger
3. Marsden
Which substance issued alpha particles in the gold foil experiment?
1. Polonium
2. Uranium 235
3. Radium
Which fact surprised Rutherford a lot?
1. A small number of alpha particles were deflected of an angle larger than 30°
2. A few number of alpha particles were reflected by the gold foil and came back
3. Most alpha particles went straight on through the gold foil
What conclusion did Rutherford draw from the experiment?
1. The experiment confirmed Thomson's atomic model.
2. Electrons travel very fast on their atomic orbits and they can reflect alpha particles in a collision, because of their great energy.
3. The positive charges into an atom are all concentrated in a very small region.
If the alpha particles were slowed down, would more be deflected at greater angles since the nucleus should now more easily turn them back?
1. Yes.
2. No.
Would nuclei of smaller electric charge, as aluminium, scatter alpha particles less strongly, as expected?
1. Yes, they do because electric force is weaker
2. No, they do not always because the scattering depend also on the mass
Would the pattern of numbers of alpha particles scattered at different angles fit the pattern expected from an inverse square law for electrical repulsion?
1. Yes.
2. No.