Light and stars

Question 1

includes gamma rays, X-rays, ultraviolet light, visible light, infrared
radiation, microwaves, and radio waves.

Answer 1

Electromagnetic radiation

Question 2

the arrangement of electromagnetic radiation according to wavelength.

Answer 2

electromagnetic spectrum

Question 3

a small packet of light energy.

Answer 3

photon

Question 4

the study of the properties of light that
depend on wavelength.

Answer 4

spectroscopy

Question 5

an uninterrupted band
of light emitted by an incandescent solid, liquid, or gas under pressure.

Answer 5

continuous spectrum

Question 6

a continuous spectrum produced when white light passes through a cool gas under low pressure. The gas absorbs selected wavelengths of light, and the
spectrum looks like it has dark lines
superimposed.

Answer 6

Absorption spectrum

Question 7

s a series of bright lines
of particular wavelengths produced by a hot gas under low pressure.

Answer 7

emission spectrum

Question 8

“FINGERPRINTS” lines
identify the elements present and thus the star’s chemical composition.

Answer 8

SPECTRAL LINES

Question 9

the apparent change in
frequency of electromagnetic or sound waves caused by the relative motions of the source and
the observer.

Answer 9

Doppler effect

Question 10

used to determine whether a star or other body in space is moving away from or toward Earth.

Answer 10

Doppler effect

Question 11

a telescope that uses a
lens to bend or refract light

Answer 11

refracting telescope

Question 12

produces an image
by bending light from a distant object so that the light converges at an area

Answer 12

focus

Question 13

a telescope that reflects
light off a concave mirror, focusing the image in front of the mirror

Answer 13

reflecting telescope

Question 14

a telescope designed to
make observations in radio wavelengths.

Answer 14

radio telescope

Question 15

orbit above Earth’s atmosphere and thus
produce clearer images than Earth-based
telescopes.

Answer 15

space telescope

Question 16

first space telescope, built by NASA

Answer 16

HUBBLE space telescope

Question 17

telescope that study X-rays

Answer 17

Chandra X-Ray Observatory

Question 18

used to study both visible light and gamma rays.

Answer 18

Compton Gamma- Ray Observatory

Question 19

study infrared radiation.

Answer 19

James Webb Space Telescope

Question 20

the region of the sun that
radiates energy to space, or the visible surface of the sun.

Answer 20

Photosphere

Question 21

the first layer of the solar
atmosphere found directly above the
photosphere.

Answer 21

Chromosphere

Question 22

the outer, weak layer of the solar
atmosphere

Answer 22

Corona

Question 23

a stream of protons and electrons
ejected at high speed from the solar corona.

Answer 23

solar winds

Question 24

a dark spot on the sun that is cool

Answer 24

sun spot

Question 25

huge cloudlike structures consisting of chromospheric gases

Answer 25

prominences

Question 26

ionized gases trapped by magnetic fields that extend from regions of intense solar activity.

Answer 26

prominences

Question 27

brief outbursts that normally last about an hour and appear as a sudden brightening of the region above a sunspot cluster.

Answer 27

solar flares

Question 28

are bright displays of ever-changing light caused by solar radiation interacting with the upper atmosphere in the region of the poles.

Answer 28

Auroras

Question 29

the way that the sun produces energy. This reaction converts four hydrogen nuclei into the nucleus of a helium atom, releasing a tremendous amount of energy

Answer 29

nuclear fussion

Question 30

is 74% hydrogen

Answer 30

Sun

Question 31

large region in the corona which is less dense and is cooler than its surroundings. Through these holes, streams of solar wind escape at high speeds.

Answer 31

corona hole

Question 32

A pattern that we recognize in the night sky

Answer 32

asterism

Question 33

An apparent group of stars originally named after mythical characters

Answer 33

constellations

Question 34

a constellation that is very prominent and easily recognizable; close to the equator and visible everywhere.

Answer 34

Orion

Question 35

Brightest star

Answer 35

Alpha star

Question 36

how many constellation in present day?

Answer 36

88

Question 37

what path does stars move?

Answer 37

westward

Question 38

is our north star, directly above the earth's axis at the North Pole.

Answer 38

Polaris

Question 39

disappear or lose brightness.

Answer 39

eclipses/ecliptic

Question 40

a unit of distance; It is the distance that light travels in one year.

Answer 40

light year

Question 41

A nearby star can be viewed from earth and is seen in a position among other stars.

Answer 41

stellar paralax

Question 42

A nearby star can be viewed from earth and is seen in a position among other stars.

Answer 42

stellar parallax

Question 43

The study of the aspects and properties of the spectrum

Answer 43

spectroscopy

Question 44

he total energy radiated by the star every second in all its forms and wavelengths.

Answer 44

Luminosity

Question 45

Hottest star

Answer 45

O

Question 46

The bluer a star appears=

Answer 46

the hotter the star

Question 47

Coolest star

Answer 47

M

Question 48

The wavelengths become smaller and the perceived color will shift toward O blue

Answer 48

blue shift

Question 49

As the wavelengths gets larger, the color shifts toward red.

Answer 49

red shift

Question 50

A very large mass of gas and dust in space

Answer 50

Nebula