Brand Our Solar System

Question 0

Which magnitude would be associated with the brightest star

Answer 0

-5

Question 1

Which stars are composed of matter in which electrons have combined with protons

Answer 1

Neutron stars

Question 2

A light year is approximately ___ kilometers

Answer 2

9.5 trillion

Question 3

Which does not affect the apparent brightness of a star?

Answer 3

Size distance and temp affect

Question 4

What is parallax

Answer 4

Hhhhhh

Question 5

A hertzsprung Russell (h-r) diagram shows the relationship between

Answer 5

Temp and absolute magnitude

Question 6

When a main sequence star has exhausted the fuel in it’s core it becomes

Answer 6

A red giant

Question 7

Af it’s nucleus the Milky Way galaxy is about 100,000 light years wide and ____ light years thick

Answer 7

10,000

Question 8

Based on the observed red shifts in the spectral lines of distant galaxies astronomers conclude that the universe is

Answer 8

Expanding

Question 9

The mass of a star can be determined by studying

Answer 9

It’s orbit around a binary companion

Question 10

What evidence supports the Big Bang theory

Answer 10

Red shift cosmic microwave background radiation

Question 11

The sun is a __star

Answer 11

Main sequence

Question 12

Which force is most responsible for the formation of a star

Answer 12

Gravity

Question 13

What are the different types of galaxies

Answer 13

Spiral elliptical irregular

Question 14

another name for the interstellar matter that will eventually form a star is

Answer 14

Nebula

Question 15

Stellar distance is usually expressed in what units

Answer 15

Fjhhhhhh

Question 16

The measure of a stars brightness is called it’s

Answer 16

Magnitude

Question 17

Name the types of nebulae

Answer 17

?????

Question 18

About 90% of the stars on the hr diagram are

Answer 18

Main sequence

Question 19

Massive stars terminate in a brilliant explosion called

Answer 19

Super nova

Question 20

In the cores of extremely hot red giants nuclear reactions concert helium to

Answer 20

Carbon

Question 21

Stars of which color have the hugest surface temperature

Answer 21

Blue

Question 22

Greater red shifts in the spectra of the galaxies indicate

Answer 22

Moving further away an accelerating

Question 23

What is the next stage in the suns life cycle

Answer 23

Red giant

Question 24

A star with a surface temperature between 5000k and 6000k appears

Answer 24

Yellow

Question 25

According to the Big Bang theory the universe began about

Answer 25

13,7 billion years ago

Question 26

According to Hubble law galaxies are retreating at a speed that is proportional to their

Answer 26

Distance

Question 27

Our galaxy is called the

Answer 27

Millet way

Question 28

Light cannot escape the intense gravitational pull of a

Answer 28

Black hole

Question 29

Before being engulfed, matter that is pulled in to a black hole should become very hot and emit

Answer 29

X -rays

Question 30

Some stars called ____ get brighter and fainter in a regular pattern

Answer 30

Cepheid variable stars

Question 31

Stars that radiate short pulses of radio energy are called

Answer 31

Pulsar

Question 32

A —— is a developing star not yet hot enough to engage in nuclear fusion

Answer 32

Prostar

Question 33

The Milky Way is classified as a — galaxy

Answer 33

Barred spiral

Question 34

A —- galaxy is a type of galaxy the lacks symmetry

Answer 34

Irregular

Question 35

The —- which occurred in an instant marks the beginning of the universe

Answer 35

Big Bang

Question 36

The apparent change in wavelength of radiation caused by the relative motions of the source and the observer is called

Answer 36

Doppler effect

Question 37

The most basic way to measure the distant to a star is

Answer 37

Hubble laws

Question 38

Apparent magnitude refers to a stars—– as it appears from —-

Answer 38

Brightness earth

Question 39

A light year is the distance —/ travels in a year

Answer 39

Light