Soace And Beyond

Question 1

Which culture/country had a belief that the Earth was at the center of the Solar System?

Answer 1

Greece

Question 2

Which culture/country believed that a flat earth was supported by 12 pillars?

Answer 2

India

Question 3

Which culture/country believed that the earth was supported on the back of a turtle?

Answer 3

Thailand

Question 4

What was the Geocentric model?

Answer 4

The Geocentric model was a theory of the earth being in the middle of the universe and that the Sun, moon, lanets and stars moved around the earth.

Question 5

What was the heliocentric model?

Answer 5

The heliocentric model was the idea that the planets orbited the Sun.

Question 6

What does the current model state?

Answer 6

Our current model of the Universe says that our planets orbit around our
sun, and that our solar system is a small part of our galaxy, which isn’t in
the centre of the Universe.

Question 7

What does the Big Bang Theory state?

Answer 7

The theory states that to begin with all the matter in the universe
was concentrated into a single incredibly tiny point.
This began to enlarge rapidly in a hot explosion (called the Big
Bang). The Universe is still expanding today.

Question 8

What is an anology?

Answer 8

An analogy is a comparison between two things that helps you to explain what one of them is.

Question 9

What can be predicted from the Big Bang theory avout the size of the Universe?

Answer 9

That the universe will always expand and continue to get larger and that in fact it was extremely tiny at one point. It is constantly expanding.

Question 10

How are atoms of the element Helium formed in a star?

Answer 10

Stars such as the sun fuse hydrogen nuclei into helium and similar small nuclei.

Question 11

How were atoms of very heavy elements formed?

Answer 11

Atoms of very heavy elements are formed when a supernova occurs. When it occurs, it fuses smaller nucleis and makes bigger nucleis such as gold.

Question 12

How and when atoms of different elements may be distributed throughout the Universe?

Answer 12

Due to explosion of stars, when they die, the different elements get distributed around a large area.

Question 13

Name some uses of satellites

Answer 13

Communication, internet, forecasting, broadcasting, navigation, mapping

Question 14

How does a satellite stay in orbit?

Answer 14

A satellite maintains in orbit by balancing two factors : its velocity and the gravitational pull that the Earth has on it.

Question 15

What is a Geostationary satellite?

Answer 15

A satellite that stays above the same point on the earth and its orbit time is 24 hours

Question 16

What is a Low Polar orbit satellite?

Answer 16

It has a low orbit around the earth passing over the North and South poles. The orbit tume of this satellite is anything less than 24 hours.

Question 17

What is a Low earth orbit satellite?

Answer 17

This satellite is 1000km above the earth and its orbit time is 90 mins to 2 hours.

Question 18

Risk Assessment

Answer 18

A document that describes how you reduce a risk.

Question 19

Hazard

Answer 19

The potential source of harm.

Question 20

Ethics

Answer 20

A moral decision of what is right and of what is wrong.

Question 21

Biased

Answer 21

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

Question 22

State two factors that you need to consider when you do a risk assessment.

Answer 22

The probability of something happening and the consequences of it.

Question 23

What are the risks of space missions?

Answer 23

You could explode, solar flare could occur, the reliance on parachutes to descend, and as they travel back, the spacecraft gets very, very hot due to friction.

Question 24

What is Solar flare? And state one risk of it.

Answer 24

Solar flare is a process that produces a large amount of radiation emitted from the Sun. On risk is a solar flare can stop all the on-board computers working.

Question 25

How does Galileo’s telescope work?

Answer 25

Galileo used a telescope with two lenses. This is called a refracting telescope. The objective lens produce a real image of a distant object. The eyepiece lens magnifies the image of the object. This is how Galileo could observe the moons in orbit around Jupiter.

Question 26

Why does refraction happen?

Answer 26

Refraction happens because the light wave changes speed.

Question 27

What is the major problem of the refracting telescope?

Answer 27

The refracting telescope is not clear and blurred because all the colours are refracting and different points.

Question 28

What is an exoplanet?

Answer 28

An exoplanet is a planet orbiting a star that is not our Sun.

Question 29

When do scientists use mathematical models?

Answer 29

They use them for when you can not do experiments to collect data.

Question 30

What is a mathematical model?

Answer 30

A set of rules using maths, usually using a computer, that helps predict what will happen.

Question 31

What does SETI stand for?

Answer 31

Searth for Extra-Terrestrial Intelligence.

Question 32

What are the required conditions for a Habitable zone?

Answer 32

A suitable temperature, suitable water and suitable oxygen.

Question 33

Describe two techniques that astronomers have used to dpsearch for Extra-Terrestrial life.

Answer 33

Scientist have sent probes into Space. These probes carry messages on different media.

Question 34

Independ variable

Answer 34

The variable you change to see what happens.

Question 35

Dependent variable

Answer 35

The variable you measure.

Question 36

Control variable

Answer 36

A variable that you must keep the same.

Question 37

What is the retrograde motion?

Answer 37

Retrograde motion is the apparent motion of a planet in a direction opposite to that of other bodies within its system.