Space test 2

Question 1

Light Year

Answer 1

The distance that light travels in a vacuum (empty space) in 1 year

Question 2

What is the closest star to us

Answer 2

Proxima Centauri

Question 3

What is 1 light year (Ly) equivalent to (km)

Answer 3

1 ly is equivalent to 9.5 trillion km

Question 4

How was the galaxy formed

Answer 4

We started as a Solar Nebula, there was gas and clumps, gravity caused these clumps to attract and form a core as the core grew bigger so did the force of gravity, causing more gas and clumps to be pulled this continued for millions of year till we had a proto star, the gravity pushed in on the proto star making it more dense and hotter causing nuclear fusion to start, this gave birth to the sun

Question 5

How did the planets come to be?

Answer 5

once the star was born it pushed the lighter gasses away (gas giants) and things like rock and metal stayed closer since the had more mass and gravity.

Question 6

Star cluster

Answer 6

A group of stars that were formed in the same nebula held together by gravity

Question 7

Open star cluster

Answer 7

Small collection of young stars

Question 8

Globular cluster

Answer 8

Large, ball shaped collection of very old stars

Question 9

Name all the types of galaxies

Answer 9

Elliptical galaxies, spiral galaxies, lentecicular galaxies, irregular galaxies and barred spiral galaxies

Question 10

Explain Elliptical galaxies

Answer 10

• spherical to a flattend oval
• very little gas dust or young stars
• over 50% are elliptical galaxies

Question 11

Explain Spiral galaxies

Answer 11

• flattened disk with a centennial bulge made of old red stars
• has 2-4 arms that make a spiral shape

Question 12

Lenticular galaxies

Answer 12

• a central bulge with a flatend disk of gas and dust
• no spiral arms made of mostly red stars

Question 13

irregular galaxies

Answer 13

• has no defined shape
• has even more gas and dust then the spiral galaxies
• makes up 10% of the galaxies

Question 14

barred spiral galaxies

Answer 14

• a spiral galaxy with a barr in the center of it

Question 15

What is the closet galaxy to us

Answer 15

Andromida galaxy

Question 16

Who suggested that the universe was expanding

Answer 16

Albert Einstein

Question 17

What did Edwin Hubble discover after he found out other galaxies exist

Answer 17

He discovered that galaxies were moving away and the further a galaxy the faster it was moving

Question 18

Define red shift

Answer 18

the phenomenon of light that other galaxies moving towards the red end of the spectrum, indicating that a galaxy is moving away

Question 19

Hubble’s law

Answer 19

The further a galaxy the greater the red shift and there for it appears to be moving even faster.

Question 20

What is Dark Matter

Answer 20

A matter that is holding together galaxies that cant be seen because it cant emit or absorb light

Question 21

What do we know of Dark Matter

Answer 21

Not much is known about dark matter it is the most abundant form of matter in the universe

Question 22

What is Dark Energy and what does it do?

Answer 22

Dark energy is a form of energy that works against gravity and nullifies gravity and there fore expanding the rate of expansion

Question 23

Big bang theory

Answer 23

A theory that presumes how the universe came into existence, it is said that the universe smaller then a period “.” infinitely dense and infinitely hotter as the point exploded it stretched out billions of kilometers known as the universe, after the explosion the universe cooled down creating the stars galaxies atmos energy and so on

Question 24

Luminosity

Answer 24

The more energy produced by a star each second, more energy = more brightness

Question 25

aparint magnitude

Answer 25

The brightness of a star in the night sky as they appear from earth

Question 26

Absolute magnitude

Answer 26

The brightness of stars as is they were located 33 LY from earth

Question 27

Solar mass

Answer 27

The suns mass used as a unit

Question 28

What is the suns mass

Answer 28

1.989 x 10^30

Question 29

Who created the telescopes

Answer 29

Galileo Galilee

Question 30

What are refracting telescopes?

Answer 30

A telescope with lenses (curved glass) to see, the larger the lenses the more light it can absorb there fore allowing to see more clearly and further, how ever it is very expensive to make a giant curved glass

Question 31

What is a reflecting telescope

Answer 31

A telescope with mirrors in side of them allowing for light to bounce of each other allowing for better quality and clearer images

Question 32

What do radio telescopes do

Answer 32

As the name suggest they collect radio waves for distant stars and galaxies. Most look like a curved dish made of wires and metals

Question 33

What are X-ray telescopes

Answer 33

Placed hundreds of kilometers in space, they detect extremely hot invisible objects in space

Question 34

What are gamma ray telescopes

Answer 34

They detect intense gamma rays in regions of space

Question 35

What is Hubble space telescope

Answer 35

Name after Edwin Hubble, this telescope is placed outside the earths atmosphere where it can send 4x more clearer images than earth; its biggest mirror has a diameter of 2.4m.

Question 36

What is James web telescope

Answer 36

The latest telescope that NASA has sent out, its meant to the successor of Hubble, it can get clearer picture and look even deeper into the universe.

Question 37

What is a space probe

Answer 37

A robotic space craft sent to explore other celestial objects

Question 38

What is Canada Arm

Answer 38

used to assist astronauts in there space walk, all space shuttels are equipped with it.

Question 39

What is Canada Arm 2

Answer 39

Placed on the ISS on 2001, this robot handles all the heavy work on the ISS; it is not permanently attached.

Question 40

What is Dexter

Answer 40

A robot that is also placed on the ISS, this robot has two hands and is in charge of the precise movements and fixing things that require precise movements.

Question 41

What is Dexter

Answer 41

A robot that is also placed on the ISS, this robot has two hands and is in charge of the precise movements and fixing things that require precise movements.

Question 42

What is a space craft

Answer 42

A human occupied or robot viachel used to explore space and other celestial objects

Question 43

What is thrust

Answer 43

A force of a rocket engine

Question 44

Rocket booster

Answer 44

A powerful rocket engine that contains fuel and attaches to a space craft during launch

Question 45

What if a spacecraft doesnt have enoufgh launching speed

Answer 45

It will be pulled back by gravity

Question 46

Too much launching speed

Answer 46

it will go further then intended and wont stay in orbit

Question 47

What are some effects of no gravity on the human body

Answer 47

Diziness, puffy face, bone/muscle, and getting taller

Question 48

What are some hazards in space?

Answer 48

Crew illness, radiation, temperature

Question 49

What is space junk

Answer 49

Man made objects in space that no longer work or useful