Physics - Space And Beyond

Question 1

What is in our solar system/ what does it contain?

Answer 1

The sun
Eight planets
Dwarf planets
Natural satellites: the moon

Question 2

What is the name of the galaxy that our solar system is part of.

Answer 2

The milky way

Question 3

Describe what a NEBULA is

Answer 3

A cloud of gas and dust

Question 4

Describe what a PROTOSTAR is

Answer 4

A hot dense mass formed by increasing gravity

Question 5

What is a main sequence star?

Answer 5

A star undergoing nuclear fusion of hydrogen into helium. It is stable due to balanced forces from the outward pressure of expanding hot gases and the stars gravity.

Question 6

What are the similarities and differences between artifical satellites and moons?

Answer 6

Similarity: Both orbit a planet
Differences: Moons are natural and satellites are man made

Question 7

What is the shape of the orbit of a planet around the sun

Answer 7

Circular/ elliptical

Question 8

Describe and explain RED-SHIFT

Answer 8

RED SHIFT. Thw observed increase in wavelength of light towards the red end pf the spectrum . This is because an object is moving away so the ligghts wavelemgth increases.

Question 9

Explain the link BETWEEN THE DISTANCE OF GALAXIES FROM US and RED SHIFT

Answer 9

The further away the galaxies are, the bogger the red shift.

Question 10

Describe the BIG BANG theory

Answer 10

The universe started from a very small region that was HOT AND DENSE; all the matter was packed together. Something caused the expansion of the universe and it has been expanding ever since.

Question 11

State some evidence for the big bang.( RF)

Answer 11

RED SHIFT :Provides evidence that the universe is expanding because IF something is moving away then the wavelength seems larger.
CHANGE OF GLAXIES SPEED:provides evidence of an expanding universe as the further away, the faster their speed of RECESSION

Question 12

Give three examples of things we do not understand about the universe

Answer 12

• DARK mass
• DARK energy
• How the increase in expansion of the universe is occuring

Question 13

How are RADIUS and SPEED related in an orbit

Answer 13

The GREATER the radius, the SLOWER the speed

Question 14

What is centriputal force

Answer 14

A force acting towards the centre which causes an object to keep moving in a circular path

Question 15

Labels for the diagram of Centiruptal force
Dotted line outside:
Force between the centre and ball(planet):
The direction of which the ball(planet)is going:
The centre:

Answer 15

ORBIT
CENTRIPUTAL FORCE
VELOCITY
AXIS

Question 16

How are elements formed stars
Up to and including iron?
Heavier than iron?

Answer 16

Fusion reaction in stars
During a Supernova

Question 17

How are heavier elements formed in supernovas and how are they dispersed

Answer 17

The temperature and pressure inside a Supernova is so large that the nuclei are forced rogether. The explosion of the supernova disperses the elements throughout the universe

Question 18

How are heavier elements formed in supernovas and how are they dispersed

Answer 18

The temperature and pressure inside a Supernova is so large that the nuclei are forced rogether. The explosion of the supernova disperses the elements throughout the universe

Question 19

What is the Geocentric model?

Answer 19

The Geocentric model is a model to have the Earth as the centre of the universe

Question 20

What is the Heliocentric model?

Answer 20

The Heliocentric model is a model that has the Sun in the centre of the universe

Question 21

What is a similarity and difference between the Heliocentric and Geocentric model?

Answer 21

A similarity is that they both have planets that orbit around them in a circular motion. A difference is that in the Geocentric model, the Earth is the centre of the universe but in the Heliocentric model, the Sun is in the centre of the universe

Question 22

In India, what did they believe the Earth looked like?

Answer 22

In India, they believed that the Earth was resting on the back of a MASSIVE turtle

Question 23

In China, what did they belive the Earth looked like?

Answer 23

In China, they believed that the Earth was flat and was supported by twelve pillars

Question 24

In Thailand, what did they believe in that caused a Solar Eclipse?

Answer 24

In Thailand, they believed that a God (named “Rahu”) swallowed the Sun

Question 25

What is the name for the motion that looked like planets moved backwards? (Bro how do i word this. Mb gng, i suck)

Answer 25

Retrogade motion

Question 26

What does Geostationary mean?

Answer 26

When a satellite is Geostationary, it means that satellite will stay above the same place on our Earth eg. a broadcasting satellite. It will complete one orbit in the same amount of time as the Earth.

Question 27

why tf does retrograde motion happen????

Answer 27

🤓 It is caused by the difference in planets’ orbital speed. (let’s say mars and earth for example)
Mars moves slower in its orbit compared to earth so when we pass Mars in orbit, Mars seems to move backwards because we’re moving faster than it
-Jeeeeeemy

Question 28

What is the Kepler Space observatory?

Answer 28

A reflecting telescope with a 95 megapixel camera attached. Used to find planets in other solar systems that may support life. It looks at the same part of the sky all the time to detect changes in intensity of radiation received to calculate the size of the planet blocking the radiation.

Question 29

What is the Hubble Space telescope?( Reflecting Telescope )

Answer 29

Large curved mirrors that use the reflection of light to take images of objects in our Solar System and of exoplanets. The curved mirrors focus light and other radiation from distant objects. A flat mirror reflects this into the eyepiece.

Question 30

What was Galileo’s telescope?

Answer 30

A refracting telescope with two lenses. The objective lens produces an image of a distant object while the eyepiece lens magnifies this. This was used to observe the moons of Jupiter.

Question 31

Who Described gravity in the GEOcentric model

Answer 31

Bhaskarachya(question 32 is straight ass)

Question 32

When was the Big Bang?

Answer 32

14,000,000,000 years ago (fkn question 27 sucks)