Dental Radiography Principles and Techniques - 2 Physics

Front

What is the structure of orbits or shells in an atom?

Back

The orbiting shell closest to the nucleus has the highest energy level.

Front

What is ionizing radiation?

Back

It is radiation that is capable of producing ions by removing or adding an electron to an atom.

Front

What are cathode rays derived from?

Back

Electrons.

Front

Which element is the simplest atom?

Back

Hydrogen (H #1).

Front

What happens to an atom that gains an electron?

Back

It will have a negative charge.

Front

What happens to an atom that loses an electron?

Back

It will have a positive charge.

Front

What is the relationship between energy levels and distance from the nucleus in an atom?

Back

The energy level increases as the distance from the nucleus increases.

Front

What type of radiation can travel at the speed of light?

Back

Electromagnetic radiation.

Front

What is the charge of an atom that has lost an electron?

Back

Positive charge.

Front

What is the charge of an atom that has gained an electron?

Back

Negative charge.