Astronomy

Question 1

Main source of energy for stars

Answer 1

Nuclear fusion turning hydrogen to helium

Question 2

Small stars

Answer 2

Nebula, sun like star, red giant, planetary nebula and white dwarf, black dwarf

Question 3

Large stars

Answer 3

Nebula, sun like star, red supergiant, supernova, neutron star or black hole

Question 4

Bright stars

Answer 4

Typically large and hot

Question 5

Blue

Answer 5

Hotter than red

Question 6

Main sequence diagram

Answer 6

Hertzsprung-Russell diagram

Question 7

Sun life time

Answer 7

10 billion total, current 4.6

Question 8

Structure of universe (by size)

Answer 8

planet, star, solar system, nebulae and galaxies

Question 9

Distences

Answer 9

Light year, AU, parsec, mega parsec

Question 10

Telescopes

Answer 10

Primary mirror focuses to smaller point reflected into the eye. Or convex lens focuses and concave straightens for eye

Question 11

EM spectrum

Answer 11

Gamma
X ray
Ultra
Visible
Infrared
Microwave
Radio
Help find and identify stars

Question 12

Space telescopes

Answer 12

Not interrupted by human waves or light pollution

Question 13

Big bang theory

Answer 13

Origin of the universe supported by the expanding universe and Cosmic Background Radiation

Question 14

Doppler effect

Answer 14

Light like sound will change spectrum when moving as opposed to stationary

Question 15

Red shift

Answer 15

Spectrum closer to red, star moving away from Earth

Question 16

Edwin Hubble

Answer 16

Observed distant galaxies were red shifted and were moving away

Question 17

E = mc^2

Answer 17

As energy slows down a lot it can become matter

Question 18

Steady state

Answer 18

Wrong, universe in a constant state, Hoyle