The quantity of matter that makes up any physical object is called the:

Which of the following is located in an orbit around the nucleus of an atom?

Which of the following has a negative(-) electrical charge?

Which of the following are considered fundamental particles of atoms? (click all that apply)

When a neutral atom gains or loses an electron, the atom is said to be:

Mechanical energy can be classified as either kinetic energy or:

X-rays consist of:

X-rays with greater energy have a shorter ____________ and are more penetrating.

Of the following types of electromagnetic energy, which has the shortest wavelength?

Which of the following are accurate statements regarding the characteristics of x-rays? 1. They are highly penetrating and invisible. 2. They cause certain crystals to fluoresce. 3. They travel in straight lines at the speed of light.

The smallest possible unit of electromagnetic energy is the:

The term for a continuous path for the flow of electrical charges from the power source through one or more electrical devices and back to the source is:

The common unit of measure for the potential difference across an x-ray tube is the:

The frequency of alternating current (AC) delivered by electric utilities in the United States and Canada is:

The purpose of a transformer is to:

Which electron shell in the atom is most important for the production of x-rays?

Electrons are held in place around the nucleus of the atom by a(n):

When an atom gains or loses an electron it is called a(n):

The process of converting AC to DC is called:

One of the most important elements in radiology that is used to create x-rays is:

X-rays cause ionization in the human body. This has a negative effect on the body.

When a step-up transformer increases voltage from the primary side to the secondary side of a transformer, amperage is increased.

X-rays with greater energy have a lower frequency.

X-rays can cause cancer.

Roentgen discovered x-rays while working with a(n) _______ tube.

An “electron cloud" surrounding the filament of the cathode is referred to as a:

Free electrons for x-ray production come from the:

The creation of the space charge in the x-ray tube produces:

The majority of photons in the x-ray beam are created by which process?

More than 99% of the energy of the electron stream is converted into:

The high-speed rotation (10,000 rpm) of the anode enables:

The degree of angulation of the x-ray tube target will determine the:

A dual-focus x-ray tube has:

The anode heel effect is a phenomenon of x-ray production that results in:

To take advantage of the anode heel effect when making a radiograph of the femur in recumbent anteroposterior projection on a 14-x 17-inch image receptor (IR) at a 40-inch source-image receptor distance (SID), the patient should be placed so that the:

The penetrating power of the x-ray beam is controlled by varying the:

The rate of current flow across the x-ray tube is measured in:

Doubling the mA will result in: 1. increased patient dose. 2. twice as many photons in the x-ray beam. 3. increased radiographic density.

The unit used to indicate the total quantity of x-ray exposure is:

An x-ray exposure is made using the following factors: 200 mA, 0.02 seconds, 70 kVp, 40 inches SID. The value the mAs for this exposure is:

The device for removing long-wavelength radiation from the primary x-ray beam is the:

X-ray equipment capable of producing 70 kVp or more is required to have total filtration of at least:

The purpose of rotating the anode of the x-ray tube is to:

Image sharpness is determined by the:

The amount of detail seen in the x-ray image is referred to as: