A Doppler Red Shift Indicates

question 52

Multiple Choice

A Doppler red shift indicates

• A) a shift toward lower frequencies.
• B) a shift toward shorter wavelengths.
• C) that a light source is approaching relative to the observer.
• D) none of these.

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Definitions:

Teletherapy

A radiation therapy technique that allows deeper penetration than brachytherapy; used primarily for deep tumors.

Radiation Therapy

The use of X-rays and radioactive substances to treat cancer.

Deep Tumors

Cancerous growths located deep within the body that may be hard to detect and treat.

Radiotherapy

A treatment method that uses high doses of radiation to kill cancer cells or shrink tumors.