Chapter 31.1 & 31.2

Question 1

V: groups of stars by ancient cultures

Answer 1

constellations

Question 2

V: something that collects and amplifies radio waves

Answer 2

radio telescope

Question 3

V: the distance light travels in a year

Answer 3

light year

Question 4

V: uses a prism or diffraction grating to separate light into it’s component wave lengths

Answer 4

spectroscope

Question 5

V: stars form from large large clouds of gas, ice, and dust

Answer 5

nebula

Question 6

V: broad band of stars from hot, bright stars to cool dim stars

Answer 6

Main sequence

Question 7

V: when the equilibrium ends,the stars core contracts, the temp increases, and the star evolves into a…

Answer 7

giant star

Question 8

V: when the core of a giant star no longer supports fusion leaving a hot dense core

Answer 8

white dwarf

Question 9

V: a area in space that is so dense that nothing can escape it’s pull of gravity

Answer 9

black hole

Question 10

V: the layer of the sun that emits light into space

Answer 10

photosphere

Question 11

V: dark, cool areas in the photosphere where the suns magnetic field is weakened

Answer 11

sunspots

Question 12

V: gigantic explosion of a star in which the temp within the collapsing star reaches 10 billion K, can evolve into a neutron star

Answer 12

supernova

Question 13

V: produced by a collapsing star when protons and electrons in the stars core collide to form neutrons

Answer 13

neutron star

Question 14

How did some of the constellations get their names

Answer 14

they were characters in stories, animals, and even tools

Question 15

What is Orion belt?

Answer 15

a constellation of a great hunter and his two dogs

Question 16

What are Orion’s dogs names?

Answer 16

Canis minor and Canis major

Question 17

How many basic types of optical telescopes are there?

Answer 17

2

Question 18

What is a refracting telescope?

Answer 18

a telescope that uses convex lens

Question 19

What are the two names of the optical telescopes?

Answer 19

refracting and reflecting telescopes

Question 20

What is a space telescope?

Answer 20

a telescope that is in space

Question 21

Why are space telescopes better?

Answer 21

it does not have Earth’s atmosphere blocking it

Question 22

Name two space telescopes

Answer 22

Chandra X-Ray Observation and the Spitzer Space Telescope

Question 23

What are the 3 things spectroscopes can determine about a star?

Answer 23

temp, chemical composition, whether it’s moving towards or away from Earth

Question 24

If a star is farther away from Earth what color will it be and what will it’s wavelength be?

Answer 24

it will be red and it’s wavelength will be spread out

Question 25

If a star is closer to Earth what color will it be and what will it’s wavelength be?

Answer 25

it will be blue and it’s wavelength will be more frequent (closer)

Question 26

Where do stars form from?

Answer 26

nebula

Question 27

Where do the H and the R come from in a HR diagram?

Answer 27

Hertzsprung-Russell

Question 28

What is a H-R diagram?

Answer 28

shows how bight a star is and what it’s temp is on a diagram

Question 29

What is our Sun known as?

Answer 29

a giant star

Question 30

What are the interior layers on the Sun?

Answer 30

• core
• the radiation zone
• the convection zone

Question 31

What is the surface of the Sun called?

Answer 31

photosphere

Question 32

What is the atmosphere of the sun composed of?

Answer 32

chromosphere and corona

Question 33

Are Sun spots permanent features?

Answer 33

no; they appear and disappear