Dental Assistant Mid-Term Dental Radiography

_________ was a professor of physics and discovered x-rays.

• Kells

• Roentgen

• Walkoff

• Rollins

_______________ took the first intraoral radiograph and loss his three finger, hands and his arm.

• Walkoff

• Kells

_____________ developed the bisecting technique.

• Rober

• McCormack

______________ developed the paralleling technique.

• Fitzgerald

• McCormack

The open-ended tube, commonly known as the cone, is called the

• position indicator device (PID)

• Radiation absorbed dose (rad)

Other forms of electromagnetic energy include

• radio waves, television waves, and visible light

• none of the above

_____________is the process by which atoms change into negatively or positively charge ions during radiation.

• Ionization

• Milliamperage

Which of the following is not a characteristic of short, hard wavelengths?

• Low energy

• High frequency

___________ radiation is the central beam that comes from the x-ray tubehead.

• Primary

• Secondary

___________radiation forms when the primary x-ray strikes or contacts any type of matter (solid, liquid, gas).

• Leakage

• Secondary