CH10 Sun Info

Question 1

mass of the sun

Answer 1

1.989 x 10^30 kg (3.33 x 10^5 earth masses)

Question 2

visual diameter of the sun

Answer 2

1.392 x 10^6 km (10^9 earth masses)

Question 3

luminosity of the sun

Answer 3

3.827 x 10^26 watts

Question 4

mean angular diameter of the sun

Answer 4

32 arcmin

Question 5

rotational period of the sun

Answer 5

equatorial: 25 days
polar: 35 days

Question 6

mean density of the sun

Answer 6

1408 kg/m^3

Question 7

distance between the sun and earth

Answer 7

mean (1 AU): 1.496 x 10^8 km

maximum: 1.520 x 10^8 km
minimum: 1.470 x 10^8 km

Question 8

mean sunlight travel time to earth

Answer 8

8.32 minutes

Question 9

mean temperature of the sun

Answer 9

surface: 5800 K
center: 1.55 x 10^7 K

Question 10

composition by mass of the sun

Answer 10

71.5% hydrogen
27% helium
1.5% other elements

Question 11

distance of the sun from center of galaxy

Answer 11

26,000 light-years (8000 parsecs)

Question 12

orbital period of the sun around the center of the galaxy

Answer 12

230 million years

Question 13

orbital speed of the sun around center of the galaxy

Answer 13

220 km/s