Particle radiating from the nucleus of some atoms. Identical to a helium nucleus.
Negative particle identical to an electron but radiating from a decaying nucleus.
High-intensity bundle of energy being emitted from some decaying nuclei.
Radioactive elements are radioactive because they have nuclei that _________, or fly apart.
The _____ are unstable and cannot stick together indefinitely in the combination in which they form naturally.
These are sharply bent to the north pole.
These are slightly bent toward the south pole.
These are not affected by the magnet.
Substances that will glow in the dark after being exposed to sunlight.
High-energy subatomic particles, disintegration of the nucleus, and unstable atoms.
The Wilson Cloud Chamber
This is used to study direction, speed, and distance of radioactivity.
This is used to measure radioactive intensity.