Science (Physics) - Space & Beyond

Question 1

What belief for the model of the solar system was Greek?

Answer 1

The Geocentric model

Question 2

What belief for the model of the solar system was Indian?

Answer 2

The flat earth on stilts

Question 3

What belief for the model of the solar system was from Thailand?

Answer 3

The world on a turtle supported by elephants

Question 4

Describe the Geocentric model of the universe.

Answer 4

The geocentric model of the universe is that the earth is in the centre of the universe and all pf the planets revolve around the earth.

Question 5

State some observations the geocentric model could explain.

Answer 5

• The moon orbits round the earth

Question 6

What was the problem with the geocentric model?

Answer 6

• Why the stars change brightness
• Jupiter and Mars moved in a retrograde motion

Question 7

Describe the heliocentric model.

Answer 7

The heliocentric model of the universe is that the sun is at the centre and everything orbits around it.

Question 8

What does the current model of the universe state?

Answer 8

That our planets orbit around our sun and that are solar system is only a small part of our galaxy and not at the centre of the universe.

Question 9

What is a theory?

Answer 9

An attempt to explain phenomena in our universe

Question 10

When was the big bang?

Answer 10

13.7 Billion years ago

Question 11

When was the milky way formed?

Answer 11

10 million years ago

Question 12

What does the Big Bang Theory state?

Answer 12

That all of the matter in the universe was concentrated into a single tiny point. In a hot explosion it began to rapidly expand

Question 13

What can be predicted from the Big Bang Theory?

Answer 13

The universe will continually expand

Question 14

What are the first two stages of any star?

Answer 14

They start as Proto stars then becoming main sequence stars. After this the become red giants.

Question 15

Compared to our sun, which planets will become white dwarfs?

Answer 15

The stars that are similar sizes to our sun

Question 16

Compared to our sun, which planets will become Supernovas?

Answer 16

The stars that are more massive than our Sun

Question 17

What can stars turn into after supernovas?

Answer 17

Either Neutron stars or Black holes

Question 18

Where are light elements formed?

Answer 18

They are formed from fusion stars

Question 19

What is the heaviest element made from fusion stars?

Answer 19

Iron (Fe)

Question 20

What contains all of the known elements?

Answer 20

The debris of Supernovas

Question 21

What are the missions of the New Horizon spacecraft?

Answer 21

To explore the Kuiper belt

Question 22

What is a satellite?

Answer 22

Any object that orbits another object.

Question 23

What are the uses of satellites?

Answer 23

• For research
• GPS
• To take photos
• Telecomunication
• Radio signals
• Predicting the weather

Question 24

How do satellites stay in orbit?

Answer 24

By balancing two factors:
- Velocity(centripetal force)
- Gravitational pull

Question 25

What is a geostationary satellite?

Answer 25

A satellite that stays over the same point of the earth.

Question 26

What is a LEO satellite?

Answer 26

A satellite that can pass over anyplace of the earth that can take to 90 minutes to make an orbit

Question 27

What is a Polar Orbiting satellite?

Answer 27

Low orbiting satellite that passes over the poles taking under 24 hours to orbit used for GPS and weather monitoring.

Question 28

What is a risk assesment?

Answer 28

A document that describes how you will reduce a risk.

Question 29

What is a Hazard?

Answer 29

The potential source of harm.

Question 30

What are ethics?

Answer 30

A moral decision of what is wrong or right

Question 31

What is a bias?

Answer 31

Showing only one side of information or taking things out of context

Question 32

What are some advantages of space travel?

Answer 32

- New tech ology being develpoed - Countries woking together - Inspiring people to study science - Finding out about the universe

Question 33

What are some disadvantages of space travel?

Answer 33

- Takes a lot of time - Very expensive - Can be dangerous

Question 34

What are some risks of space missions?

Answer 34

- Solar flare - Radiation - Machinery going wrong - Spacecraft exploding during takeoff

Question 35

How did Galileo's telescope work?

Answer 35

He made a refracting telescope that used two lenses increasing his magnification to 20 times more than usual.

Question 36

What is refraction?

Answer 36

The change of direction of a light ray between two transparent substances.

Question 37

What is the major problem of the refracting telescope?

Answer 37

The colours split up and cause the image to blur

Question 38

What is an Exoplanet?

Answer 38

A planet that orbits a star that isn't our Sun.

Question 39

When do scientists use mathematical models?

Answer 39

When it is too hard to complete experiments.

Question 40

What is a mathematical model?

Answer 40

Maths helping you predict things

Question 41

What did Frank Drake want to calculate?

Answer 41

To show how many planets are likely to have life on them

Question 42

What does SETI stand for?

Answer 42

Search for Extra Terrestrial Intelegents

Question 43

What three factors are required for there to be a chance of life existing?

Answer 43

- Liquid water - Perfect temperature - Oxygen

Question 44

What techniques have astronomers used to search for aliens?

Answer 44

- Probes - Radio transmissions