Dctcrmine which statcments about dust cxtinction and reddcning arc cither truc o

Question

Dctcrmine which statcments about dust cxtinction and reddcning arc cither truc or falsc. Items (5 items) (rag and drop into the approprlate area below Dust clouds cause the star behlnd them to eppear dirrrer. Stars appear Redderint bluer when they arc in front of a dust cloud thar if there is no dust clouud. Interstellar dust grains are typlcally 1 mm In attects both the spoctra and inages we take of stars. occuirs when red llght acts strarigy scattered by dust. Categories False Drag and drap here Drag and dep herù

Explanation / Answer

TRUE :

1) Dust clouds appear star behind them dimmer

2) Reddening affects both spectra and images of stars we take ...

FALSE :

1) Stars appear blue when they are in front of dust cloud than if there is no dust.

Dust can make the stars appear red than it would be without dust .This is because of high-frequency of blue light is more easily scattered by the dust than low-frequency red light.

2) Reddering occurs when red light scattered by dust.
Blue light is scattered by the dust in the cloud.

3) Interplanetary dust particle (IDP) are typically 1mm in size.
Interplanetary dust particle are small grain, generally less than a few hundred micrometres in size. It is composed of silicate minerals and glassy nodules and also sulfides, metals, other minerals, and carbonaceous material, in orbit around the Sun.

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