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Match the Four Components of the Interstellar Medium (ISM) with Theirrespective

Question 23

Matching

Match the four components of the interstellar medium (ISM) with theirrespective description. You may use the choices more than once.

Premises:

Responses:

Highly ionized state

Intercloud medium

The coolest temperature

Molecular clouds

The part of the ISM that can only be detected with X-ray telescopes have has temperatures of 10 ⁶ K or higher

H I cloud

A chaotic shape that is usually twisted, flattened, and tangled

Coronal gas

The hot space of ISMs with temperatures of a few thousand K and a density of only 0.1 atom per cubic centimeter found between the cool H I clouds

Clouds of gas and dust with densities ranging from 100s-1000s particles per cubic centimeter, found deep inside the ISM, where it is protected from UV photons

ISM clouds of cool gas of only about 100 K and dust with densities ranging up to 100 atoms per cubic centimeter and observed only at infrared and radio wavelengths

Premises:

Highly ionized state

The coolest temperature

The part of the ISM that can only be detected with X-ray telescopes have has temperatures of 10 ⁶ K or higher

A chaotic shape that is usually twisted, flattened, and tangled

The hot space of ISMs with temperatures of a few thousand K and a density of only 0.1 atom per cubic centimeter found between the cool H I clouds

Clouds of gas and dust with densities ranging from 100s-1000s particles per cubic centimeter, found deep inside the ISM, where it is protected from UV photons

ISM clouds of cool gas of only about 100 K and dust with densities ranging up to 100 atoms per cubic centimeter and observed only at infrared and radio wavelengths

Responses:

Intercloud medium

Molecular clouds

H I cloud

Coronal gas

Correct Answer:

Premises:

Responses:

Highly ionized state

The coolest temperature

The part of the ISM that can only be detected with X-ray telescopes have has temperatures of 10 ⁶ K or higher

A chaotic shape that is usually twisted, flattened, and tangled

The hot space of ISMs with temperatures of a few thousand K and a density of only 0.1 atom per cubic centimeter found between the cool H I clouds

Clouds of gas and dust with densities ranging from 100s-1000s particles per cubic centimeter, found deep inside the ISM, where it is protected from UV photons

ISM clouds of cool gas of only about 100 K and dust with densities ranging up to 100 atoms per cubic centimeter and observed only at infrared and radio wavelengths