How long would it take to fly a jet to the Sun from earth?
1 point
18 years
18 hours
1 year
24 hours
The correct answer is: 1 point. 24 hours.
1. How long would it take to fly a jet to the Sun from earth?
18 years
18 hours
1 year
24 hours
It would take approximately 24 years to fly a jet from Earth to the Sun.
2. Which of the following is correct about Sirius?
It is the brightest star in the night sky.
It is not as bright as Canopus.
It can only be seen with a telescope.
It is smaller than our sun.
The correct answer is: It is the brightest star in the night sky.
Use this table to answer questions about the spectral features of each of the stars:
Sirius has a temperature of 9,940K. Using the table above, what spectral features does Sirius have?
Helium, some hydrogen
Strong hydrogen, some ionized metals
Hydrogen and ionized metals such as calcium and iron
Both metals and ionized metals, especially ionized calcium
Based on the given temperature of Sirius, which is 9,940K, it can be concluded that the spectral features of Sirius are:
Both metals and ionized metals, especially ionized calcium.
How far away from Earth is Kapteyn's Star?
38 light years
20 light years
13 light years
1 light year
The correct answer is: 13 light years.
5. It is a spectral type M star. Using the table above, what spectral features does Kapteyn's Star have?
Helium, some hydrogen
Strong titanium oxide and some calcium
Hydrogen and ionized metals such as calcium and iron
Both metals and ionized metals, especially ionized calcium
Based on the spectral type M, Kapteyn's Star is classified as a red dwarf star. According to the table, the spectral features of M stars include:
Strong titanium oxide and some calcium.
What kind of star is Luyten's star?
red dwarf
red giant
white dwarf
neutron star
Luyten's star is classified as a red dwarf star.
It is a temperature of 3,150K. Using the table above, what spectral type is Luyten's Star?
F
G
K
M
Based on the given temperature of 3,150K, Luyten's Star would correspond to the spectral type M according to the table.
True or False: Luyten's Star is moving away from our solar system.
*
True
False
False
How many stars does Capella consist of?
*
1
2
4
6
Capella consists of two stars.
The first pair of stars in Capella are type G-giant stars. Using the table above, what spectral features do these stars NOT have?
*
They are a yellowish color.
Their temperature is 5,000-6,000K.
They consist of both metals and ionized metals, especially ionized calcium.
They are a red color.
The first pair of stars in Capella, which are type G-giant stars, do not have the spectral feature of being a red color.
Which of the following is true about Altair?*
*
It is a O type of star.
It is the brightest star in the night sky.
It is perfectly spherical.
It is flattened at its poles due to its high rate of rotation.
The correct answer is: It is flattened at its poles due to its high rate of rotation.
Since Altair is an A-type main sequence star, what is a possible temperature it could be? (use the table above)
1 point
2,000K
3,500K
7,000K
7,700K
Based on the A-type main sequence classification, a possible temperature for Altair could be 7,700K.
How far away is Pollux from Earth?
*
8.99 light years
15.67 light years
30 light years
33.78 light years
Pollux is approximately 33.78 light years away from Earth.
Pollux is an orange color. Using the table above, what spectral features does Pollux have?
Helium, some hydrogen
Strong hydrogen, some ionized metals
Metals
Both metals and ionized metals, especially ionized calcium
Based on the orange color of Pollux, it belongs to the spectral type K. According to the table, the spectral features of K stars include:
Strong hydrogen, some ionized metals.
How many stars make up Kruger 60?
1
2
3
4
Kruger 60 is a binary star system, meaning it consists of two stars.
The larger, primary star of Kruger 60 is a temperature of 3,180K and the secondary smaller star is a temperature of 2,890K. Using the table above, what spectral features does Kruger 60 have?
Strong titanium oxide and some calcium
Strong hydrogen, some ionized metals
Metals
Both metals and ionized metals, especially ionized calcium
Based on the temperatures provided (3,180K for the primary star and 2,890K for the secondary star), the spectral features of Kruger 60 would include:
Strong titanium oxide and some calcium.