space unit

Question 1

what are celestial bodies

Answer 1

things humans can see from earth
(moon, stars, planets)

Question 2

constellations

Answer 2

groupings of stars that make patterns
( big and little dipper)

Question 3

altitude

Answer 3

the angle above the horizon
measured with the astrolabe

Question 4

azimuth

Answer 4

the horizontal angle measured clockwise from north
measured with the compass

Question 5

who developed the planet models

Answer 5

Copernicus- sun cenetred (elliptic)
Ptolemy- (earth cenetred)
Aristotle- (earth cenetred)

Question 6

geo vs helio

Answer 6

helio-sun
geo-earth

Question 7

what causes elliptical orbit

Answer 7

the suns grvity pulling the planets torward it and how planets are always moving which pulls them into a straight line

Question 8

refracting vs reflecting telescope

Answer 8

refracting- lens
reflecting- mirror

Question 9

Galileo’s theory

Answer 9

he figured out with a telescope that Jupiter had moons revolving around it proving that not everything revolves around the earth

Question 10

what is a spectrum

Answer 10

all of the colours contained in white light, when sunlight passes through a prism it creates a spectrum

Question 11

spectroscope

Answer 11

an instrument used to see all the colours in a spectrum, measures light in waves

Question 12

emission or bright light spectrum

Answer 12

-heated at a low pressure, produces a spectrum with only bright lights
(hot, low dense cloud)

Question 13

continuous spectrum

Answer 13

heated at high pressures, colours all blend into each other
(looks like a rainbow, hot dense sources)

Question 14

absorption or dark line spectrum

Answer 14

continuous spectrum light passes through a cooler gas the spectrum looked at has dark gaps because the gas removes some of the colours from the light
(cooler, low, dense cloud)

Question 15

diffraction grating

Answer 15

a series of closely spaced lines that spilt light into a spectrum

Question 16

spectroscopy

Answer 16

the study of absorption and emission of light

Question 17

what is the Doppler effect

Answer 17

study to tell you how fast a celestial body is moving (police light)
travels in waves and are short and high pitched when travelling towards you (blue) and are longer and low pitched when they move away from you (red)

Question 18

triangulation

Answer 18

a method of finding out the unknown distance of how far a celestial body is away from us

Question 19

adaptive optics

Answer 19

a technology that corrects light distortions to produce images that are sharper and more clear

Question 20

what is electromagnetic radiation

Answer 20

all types of radiant energy
shortest gamma, longest radio

Question 21

inferometry

Answer 21

using more than one telescope to see images more detailed

Question 22

what is radio astronomy

Answer 22

using radio waves to learn about the stars

Question 23

light year

Answer 23

the distance light travels in the time frame of one year

Question 24

comet

Answer 24

made up of ice and dust that travel through space have long tails when close to the sun and mostly orbit the outer reaches of the solar system

Question 25

what is gravitational assist

Answer 25

a method of acceleration that uses the gravity of a planet to cause the rocket to speed up and change direction

Question 26

geosynchronous

Answer 26

when the orbit of a satellite matches up with the earth's orbit

Question 27

remote sensing what it can do for us

Answer 27

the science of taking measurement of earth and other planets -show us show us the health of the environment -track the weather -image water pollution

Question 28

what are inner planets and the ones in our solar system

Answer 28

the four closest planets to the sun mostly made of rock and solid materials Mercury, mars, earth and Venus

Question 29

outer planets and the ones in our solar system

Answer 29

the four farthest planets from the sun mostly made up of gases Jupiter, Saturn, Neptune and Uranus

Question 30

meteoroid

Answer 30

small pieces of rock flying through space on no set path

Question 31

meteor (shooting stars)

Answer 31

when a meteoroid gets pulled into the atmosphere and give off light they turn into meteors

Question 32

meteorite

Answer 32

if the meteor lasts long enough to hit earth surface they are meteorites

Question 33

satellites and what they provide

Answer 33

man made objects that orbit the earth they provide entertainment, GPS, communication

Question 34

radio telescopes vs optical

Answer 34

radio- seeing long radio waves (penetrating dust, working day/night) optical- telescopes seeing visible light (blocked by dust, needing dark skies)

Question 35

AU

Answer 35

the distance light must travel from the sun to the center of earth | 150 million km

Question 36

what gas is the sun mostly composed of

Answer 36

hydrogen and some helium

Question 37

solar vs lunar eclipse

Answer 37

solar-moon comes between the sun and earth lunar-the earth casts its shadow on the moon