The absolute and apparent magnitude of a star can be used to find its distance a

Question

The absolute and apparent magnitude of a star can be used to find its distance away.

Question 47 options:

Question 48 (1 point)

A constellation is a set of stars grouped into a figure.

Question 48 options:

Question 49 (1 point)

A forbidden transition is called forbidden because it never happens.

Question 49 options:

Question 50 (1 point)

Comets are mainly rock, with some icy parts.

Question 50 options:

Question 51 (1 point)

The CNO cycle describes how a star turns hydrogen into helium.

Question 51 options:

Question 52 (1 point)

Opacity is a measure of how much light is blocked when it passes through a substance.

Question 52 options:

Question 53 (1 point)

The solar wind is mainly made of protons and electrons.

Question 53 options:

Question 54 (1 point)

If you double the temperature of a blackbody, it will emit double the energy.

Question 54 options:

Question 55 (1 point)

An O type star is cooler than a G type star.

Question 55 options:

Question 56 (1 point)

Absorption lines from nebulae can tell us what it is made of.

Question 56 options:

Question 57 (1 point)

Stars with greater mass live longer than stars with less mass.

Question 57 options:

Explanation / Answer

47. true

The apparent brightness depends on the position of the observer, So,different observers will measure different apparent magnitude, depends on locations and distance from the star.

48. true

constellation is a group of stars that some can think to form imaginary outlines or shapes or patterns.

49. false

forbidden transitions are superficially feasible but they are much less likely to occur.

50. true

Comets are mainly composed of rock, dust, ice and frozen gases.

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