Question

Indicate whether the following statements are true or false. (Select T-True, F-False. If the first is...

Indicate whether the following statements are true or false.
(Select T-True, F-False. If the first is T and the rest F, enter
TFFFFF).  

A) Distances to most stars in the Milky Way are measured by spectroscopic parallax (main-sequence fitting).
B) Matter is spread uniformly throughout the Universe.
C) The nearest large spiral Galaxy, similar in size to the Milky Way, is the Andromeda Galaxy (M31). It is located about 2 million light years from Earth.
D) RR Lyrae and Cepheid variable stars are used to measure the distance to nearby galaxies.
E) The disk of the Milky Way galaxy is about 1,000 light years in diameter.
F) If we find an O type star, it must be a population I star.

Science   Advanced-Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

A) Distances to most stars in the Milky Way are measured by spectroscopic parallax - FALSE

B) Matter is spread uniformly throughout the universe - TRUE

C) The nearest large spiral Galaxy ,similar in size to the Milky way is the Andromeda Galaxy -TRUE

D)RR Lyrae and Cepheid variable stars are used to measure the distance to nearby galaxies - TRUE

E) The disk of the Milky way is about 1000 light years in diameter - TRUE

F) If we find an o type star it must be a population I star - FALSE

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
4. [4pt] Indicate whether the following statements are true or false. (Select T-True, F-False. If the...
4. [4pt] Indicate whether the following statements are true or false. (Select T-True, F-False. If the first is T and the rest F, enter TFFFFF).   A) Distances to most stars in the Milky Way are measured by spectroscopic parallax (main-sequence fitting). B) Matter is spread uniformly throughout the Universe. C) The nearest large spiral Galaxy, similar in size to the Milky Way, is the Andromeda Galaxy (M31). It is located about 2 million light years from Earth. D) RR Lyrae...
Multiple choice: Which one of the following has not been used to suggest that there is...
Multiple choice: Which one of the following has not been used to suggest that there is “dark matter” in the Universe? (a) The orbital speeds of planets around the Sun. (b) The orbital speeds of stars in our Milky Way Galaxy and in other spiral galaxies. (c) The orbital speeds of galaxies in binary pairs. (d) The orbital speeds of galaxies in clusters. (e) The gravitational lensing of background galaxies by foreground clusters of galaxies. Multiple choice: Which one of...
2. [4pt] Indicate whether the following statements are most true for elliptical or spiral galaxies. (Select...
2. [4pt] Indicate whether the following statements are most true for elliptical or spiral galaxies. (Select S-Spiral, E-Elliptical. If the first is S and the rest E, enter SEEEEE). A) Contain abundant clouds of cool gas and dust. B) Has no current star formation. C) Contain no hot, massive stars. D) Are rare in the central regions of galaxy clusters. E) Are more reddish in color. F) Has a very large range in size and mass. G) Most numerous type...
True or false? A transiting exoplanet that blocks 0.01 percent of the parent star’s light has...
True or false? A transiting exoplanet that blocks 0.01 percent of the parent star’s light has 1 10 of the star’s radius. True or false? If 20 percent of stars have Earth-like planets in the habitable zone orbiting them, and there are about 1 trillion stars in our Local Group of galaxies (of which the Milky Way Galaxy is a member), then there are roughly 200 billion such planets in the Local Group of galaxies. True or false? Exoplanets orbiting...
Show all calculations and formulas used. The closest star to earth is 4.253 light years away....
Show all calculations and formulas used. The closest star to earth is 4.253 light years away. How far is that in miles? The fastest space probe ever designed has a speed of about 58,000 km/h. How long would it take it to cross the length of the milky way galaxy? If the parallax angle of a star is 0.000075% then how far away is that star? What is the relative brightness of the Sun as seen from Saturn as compared...
1. Inside a Red Giant, denser elements fuse and emit sufficient energy to balance thermal expansion...
1. Inside a Red Giant, denser elements fuse and emit sufficient energy to balance thermal expansion versus gravity, until fusion of: silica & sulphur helium carbon & oxygen iron deuterium & tritium 2. Structure of the Universe: 2dF and the Sloan Microwave Digital Survey plotted clusters of galaxies. What kind of structure was seen among super-clusters of galaxies? Filaments of galaxies surround voids that have no or very few galaxies inside. Super-clusters expand outward from a Big Bang source. Super-clusters...
3/ which of the following stellar properties is the most fundamental to a star’s main-sequence and...
3/ which of the following stellar properties is the most fundamental to a star’s main-sequence and post-main sequence life? A/ temperature B/ mass C/ luminosity D/ radius 4/ Stars Moppit and Boppit orbit each other as members of a binary star system. Their period of rotation about their combined centre of mass is 10 years. The semi-major axis of Boppit’s orbit around the centre of mass is 15.25 AU. What is the combined mass of Moppit and Boppit? A/ Mmoppit...
Indicate whether the following statements are true (T) or false (F). Explain the false ones 1....
Indicate whether the following statements are true (T) or false (F). Explain the false ones 1. Visible light, radio waves, and ultraviolet waves are the same nature. 2. Electromagnetic waves can travel in a vacuum. 3. The main difference between a radio wave and visible light is its frequency. 4. The wavelength of the blue color is less than the yellow. 5. Different electromagnetic waves can have different frequencies, but their speed it's constant. 6. Light will always travel from...
Indicate whether the following statements are true (T) or false (F), and explain your reasoning. Please...
Indicate whether the following statements are true (T) or false (F), and explain your reasoning. Please note that if only part of a statement is true, another part is false, you should mark the whole statement as false. a) If a wire carries an alternating current (that is, a current that changes constantly), and a circuit is placed nearby, there will necessarily be an induced current in the circuit. b) If a wire carries a constantly increasing current and a...
True/False Indicate whether the statement is true or false by circling one of the letters T...
True/False Indicate whether the statement is true or false by circling one of the letters T / F 40. Materials that are poor heat conductors are insulators. T / F 41. Heat transfer by means of atoms moving from one place to another is conduction. T / F 42. Winds and weather patterns are good examples of radiation currents. T / F 43. When steam changes to liquid water at 100°C, energy is released from the water. T / F...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT