This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Studying a spectrum from a star can tell us a lot. All of the following statements are true except ... (Read 103 times)

HudsonKB16

  • Hero Member
  • *****
  • Posts: 535
on: Jul 27, 2018
Studying a spectrum from a star can tell us a lot. All of the following statements are true except one. Which statement is not true?
 
  A) The total amount of light in the spectrum tells us the star's radius.
  B) The peak of the star's thermal emission tells us its temperature: hotter stars peak at shorter (bluer) wavelengths.
  C) We can identify chemical elements present in the star by recognizing patterns of spectral lines that correspond to particular chemicals.
  D) Shifts in the wavelengths of spectral lines compared to the wavelengths of those same lines measured in a laboratory on Earth can tell us the star's speed toward or away from us.

Question 2

According to the nebular theory, as an interstellar cloud forms a new star and planetary system it
 
  A) expands, cools down, and spins slower
  B) contracts, heats up, and spins faster
  C) expands, cools down, and spins faster
  D) contracts, heats up, and spins slower


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

tofugiraffe

  • Sr. Member
  • ****
  • Posts: 319
Reply #1 on: Jul 27, 2018
Answer to Question 1

A

Answer to Question 2

B


HudsonKB16

  • Member
  • Posts: 535
Reply 2 on: Jul 27, 2018
Gracias!

tuate

  • Member
  • Posts: 332
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

Before a vaccine is licensed in the USA, the Food and Drug Administration (FDA) reviews it for safety and effectiveness. The CDC then reviews all studies again, as well as the American Academy of Pediatrics and the American Academy of Family Physicians. Every lot of vaccine is tested before administration to the public, and the FDA regularly inspects vaccine manufacturers' facilities.

Did you know?

Children with strabismus (crossed eyes) can be treated. They are not able to outgrow this condition on their own, but with help, it can be more easily corrected at a younger age. It is important for infants to have eye examinations as early as possible in their development and then another at age 2 years.

Did you know?

The top five reasons that children stay home from school are as follows: colds, stomach flu (gastroenteritis), ear infection (otitis media), pink eye (conjunctivitis), and sore throat.

Did you know?

About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.

Did you know?

It is important to read food labels and choose foods with low cholesterol and saturated trans fat. You should limit saturated fat to no higher than 6% of daily calories.

Prizm Spectrum Prizm Spectrum
Shooting star Shooting star
Prisms and a Spectrum Prisms and a Spectrum
Examples of Mission Statements Examples of Mission Statements
True Dover Sole True Dover Sole
The Electromagnetic Spectrum The Electromagnetic Spectrum
Video: Gastrin (protein digestion)

For a complete list of videos, visit our video library