Chapter 31 section 1 and 2

Question 1

constellation

Answer 1

names given to group of stars by ancient cultures

Question 2

radio telescope

Answer 2

collects and amplifies radio waves

Question 3

light-year

Answer 3

is the distance light travels in one year

Question 4

spectroscope

Answer 4

uses a prism or diffraction grating to separate light into its component wavelengths

Question 5

nebula

Answer 5

starts form from a large cloud of gas, ice, and dust

Question 6

main sequence

Answer 6

stars include broad band of stars from hot bright stars in the upper left corner of diagram to cool dim stars in the lower right corner

Question 7

giant star

Answer 7

equulibrium ends the stars core contracts the temperatures increases and the star evolves

Question 8

white dwarf

Answer 8

forms as the core of a giant star no longer supports fusion and the stars outer layers escape into space leaving a hot and dense core

Question 9

black hole

Answer 9

is an area in space that is so dense that nothing can escape its pull of gravity

Question 10

photosphere

Answer 10

the layer of the sun that emits light into space

Question 11

sunspots

Answer 11

are dark cool areas in the photosphere where the suns magnetic field has weakened

Question 12

supernova

Answer 12

collapse releases a huge amount of energy and very fast moving neutrons

Question 13

neutron star

Answer 13

when the star explodes it leaves behind a ball of neutrons

Question 14

how did some of the constellations get their name

Answer 14

after characters in stories

Question 15

what is the constellation called thats named after a great hunter

Answer 15

orion

Question 16

what are the constellations called that are named after the great hunters dog

Answer 16

Canis major and canis minor

Question 17

how many basic types of optical telescopes are there

Answer 17

two

Question 18

what are the names of the optical telescopes

Answer 18

refracting and reflecting telescope

Question 19

what is a refracting telescope

Answer 19

it uses convex lenses

Question 20

what is a reflecting telescope

Answer 20

uses mirror to collect and focus light

Question 21

what is radio telescope

Answer 21

uses radio waves

Question 22

what is a space telescope

Answer 22

look past things affecting the image

Question 23

why are space telescopes better telescopes better to use

Answer 23

does not have earths atmosphere effecting its image

Question 24

what are the two names of the space telescopes

Answer 24

Chandra X-Ray Observatory and Spitzer Space Telescope

Question 25

at what speed does light travel

Answer 25

300,000 km/s in space

Question 26

what are the three things spectroscopes can determine

Answer 26

composition of star, its surface temperature, and whether it is moving away from or toward earth

Question 27

if a star is farther away from earth what color would it be and what wave length would it have

Answer 27

red and wave length is spread out more

Question 28

how does a star form

Answer 28

nebula

Question 29

what does the hr diagram stand for

Answer 29

hertzsprung-russell

Question 30

what is our sun known as

Answer 30

a giant star

Question 31

what are the interior layers of the sun

Answer 31

the core, the radiation zone, and the convection zone

Question 32

what is the surface of the sun called

Answer 32

photosphere

Question 33

are sun spots perminant features

Answer 33

NO!!