Question

1. choose the best answer.

what allows electrons to enter a geissler tube?
cathode ray
anode
electrode
cathode

1. choose the best answer.

what did crookes theorize?
cathode rays are electrons.
cathode rays were smaller than atoms.
cathode rays are all the same size.
cathode rays have a specific mass.

1. choose the best answer.

Explanation:

1. In a Geissler tube, electrons enter through the cathode. The cathode is the negative electrode from which electrons are emitted.
2. Crookes theorized that cathode rays were smaller than atoms. His experiments led him to this conclusion about the nature of cathode rays.

Answer:

1. cathode
2. Cathode rays were smaller than atoms.