When Radiation from an Object Passes Through the Interstellar Medium

question 66

Multiple Choice

When radiation from an object passes through the interstellar medium:

• A) the object appears dimmer
• B) the object appears bluer
• C) the object appears bluer and dimmer
• D) the object appears redder and dimmer
• E) the object's apparent velocity changes

---

Definitions:

5th Wheel

A pivoting plate attached to a vehicle's chassis (like those on semi-trucks) that enables the attachment and swivel motion of a trailer or similar component.

Locking Mechanism

A device or system designed to prevent movement or separation by securing components in place, commonly used in various types of machinery and equipment.

Drawbar Eye

The coupling eye that engages to either a pintle hook or the shank below a heavy-duty ball hitch assembly.

A-train Combination

A specific truck and trailer arrangement where a standard tractor pulls a semi-trailer which is connected to a "pup" trailer by a converter dolly, used to increase cargo capacity.