chapter 3

Question 1

what are telescopes that use mirrors to collect the incoming light called

Answer 1

reflectors

Question 2

what do modern advances in telescopes design include

Answer 2

segmented mirrors
honeycombed mirrors
computer controlled mirror actuators

Question 3

what type of telescope mont allow the viewer to follow a star with only one telescope

Answer 3

equatorial (german) mount

Question 4

how many modern constellations are there

Answer 4

12

Question 5

according to Bayer’s system what is the name of the brightest star in the constellation Lyra

Answer 5

Lyrae Majoris

Question 6

what is referred to when finding a star’s location using celestial coordinates

Answer 6

celestial equator
declination
right ascention

Question 7

besides the amount of light emmitted by a star, what else may affect a star’s apparent magnitude

Answer 7

distance from the earth

Question 8

what is the distance that llight travels in one year

Answer 8

light year

Question 9

what kind of galaxy is the milky way

Answer 9

spiral galaxy

Question 10

what book of the Bible first mentions named constellations

Answer 10

Job

Question 11

what is the mane of the structure in England noted for its huge stones arranged in a circular pattern that some believe may be a solar observatory

Answer 11

Stonehenge

Question 12

what is the plane of the earths equator projected into the sky

Answer 12

star cluster

Question 13

what color are the hottest stars

Answer 13

blue

Question 14

what kind of star changes in brightness because it expands and contracts regularly

Answer 14

cepheid variable

Question 15

what is a star that explodes and sometimes leaves behind a neutron star called

Answer 15

super nova

Question 16

the instrument that has done more to reveal the magnificence of the heavens than any other

Answer 16

Hubble Space Telescope

Question 17

what are several stars in a group have the same motion called

Answer 17

star cluster

Question 18

what is a group of millions of stars

Answer 18

a galaxy

Question 19

what kind of nebula can be bvserved when they block the light from more distant stars or nebulae

Answer 19

a dark nebulae

Question 20

what seem to be unusual, distance, rapidly moving objects that do not readily fit into the standard theories of the universe

Answer 20

quasars

Question 21

what are two advantages of a radio telescope

Answer 21

discover quasers

radio waves

Question 22

besides visible light, what is another kind of radiation that stars emit

Answer 22

uv rays

gamma rays

Question 23

why can the Hubble Space Telescope detect stars to fait to be seen from the earth’s surface

Answer 23

outside the atmosphere

Question 24

how do modern astronomers determine whether stars have moved

Answer 24

photographs observed over time

Question 25

define Chromatic Aberration

Answer 25

a problem with simple refracter telescopes

Question 26

define a composite telescope

Answer 26

uses both lenses and mirrors to gather light

Question 27

what is a stationary pole-like device used to determine the position and motion of the sun by the shadow it casts

Answer 27

gnomon

Question 28

what detects wavelengths other than visible light

Answer 28

radio telescope

Question 29

what was the first type of telescope invented

Answer 29

refractor telescopes

Question 30

what has the ability to bring out details in an image

Answer 30

resoultion

Question 31

what is also known as celestial latitude

Answer 31

declination

Question 32

what is the measure of the brightness of a star

Answer 32

magnitude

Question 33

what is the star's real movement across the sky (perpendicular to the line of sight)

Answer 33

proper motion

Question 34

what is a star's movement directly toward or away from the observer (Parallel to the line of sight)

Answer 34

radial motion

Question 35

what is a star that sometimes increases many magnitudes in brilliance for a period of time, then returns to its normal brightness

Answer 35

nova

Question 36

what galaxy contains the earth's sun

Answer 36

milky way

Question 37

what is a large mass of dust and gasses in spacce

Answer 37

nebula

Question 38

who discovered that whight light is made up of various colors

Answer 38

Sir Isaac Newton

Question 39

which telescope has greater light-gathering ability

Answer 39

reflector

Question 40

which star has the greatest magnitude

Answer 40

the sun

Question 41

astronomers determine a star's red shift in order to determine what

Answer 41

distance