How many Hydrogen atoms fuse into a Helium atom in the nuclear fusion of the Sun?
4
100
The Milky Way is a ___ of 200,000,000 (billion) stars!
galaxy
100
How hot is the surface temp. of the Sun (p.231)
5,800 degrees C (approximately)
100
What type of fusion occurs in Main Sequence Stars?
Hydrogen --> Helium
100
flew her kite overhead. She saw an airplane disappear behind the kite, which looked much larger than the airplane. Why did the kite look larger than an airplane?
The airplane is further. (OR the kite is closer.)
200
Why does the Sun have the greatest apparent magnitude of any star?
Its the closest star.
200
What kind of galaxy is made mainly of old stars?
Irregular
200
What is the surface temp. of a Red giant (or a Red dwarf)?
3,500 degrees C.
200
The sun's present radius is 700,000 km. If the sun's radius increased by 150 times, what would its radius be?
105,000,000 km
200
Life has been detected around only one class of star. What class of star is it?
G Class
300
What is the life cycle of the Sun? [Give 5 Steps in order]
Give any 5: Nebula Protostar Main Sequence Red Giant Nova White Dwarf (and Nebula) Brown Dwarf Black Dwarf
300
What kind of galaxy is made of old stars?
elliptical
300
What color of star has a very high surface temperature?
Blue
300
What kind of Galaxy is the Milky Way?
Spiral
300
The moon and Sun can eclipse each other from the viewpoint of observers on Earth. This is because they appear to be the same size in the sky. Why?
The moon is closer. (The Sun is further.)
400
Put these in order from small to large:
Planet Meteroid Galaxy Red Giant Moon Universe
Meteoroid Moon Planet Red Giant Galaxy Universe
400
What are the three types of galaxies?
Spiral, Elliptical, Irregular
400
According to the Hertzsprung-Russel (H-R) diagram, which kind of star has very low . temperatures and very high absolute magnitudes?
Supergiant
400
What is the Speed of Light through outer space?
186,000 mph OR 300,000 Kph
400
Which type of star has low temperature and low absolute magnitude?
Red Dwarf
500
Six planets of the same mass are observed. Which will have the least force of gravity between them?
The two that are farthest apart.
500
What is the name of the blue shifted galaxy that is headed for Earth?
Andromeda
500
Order 5 types of star by their color from coolest to hottest.
[any 5] Red, Orange, Yellow, White, Blue-white, Blue
500
How bright are the brightest stars compared with the Sun?