Space exploration

Question 1

How do projectiles have a curved path?

Answer 1

The combination of a constant horizonal speed and a constant vertical accelreation(caused by gravity)

Question 2

Defition of a satellite?

Answer 2

a satilite is an object that orbits a larger object

Question 3

What is the time it takes for a satellite to do one orbit called?

Answer 3

Period

Question 4

What detemens the time of the period?

Answer 4

Height

Question 5

How do some satellites travel futher in one orbit

Answer 5

The higher the statellite is the fauther it has to travel

Question 6

What is a geostationary satellite?

Answer 6

A satellite which always stays in the same place above the earth

Question 7

How long is the oribit of a geostationary satellite

Answer 7

24 hours

Question 8

What is the altitude of a geosatiary satilite and what must it be postitioened above?

Answer 8

36,000km and above the equator

Question 9

How do you commuicate with satellites?

Answer 9

The signals are sent from one ground sation, the statellite picks up these weak signils and amplifies it using a concave mirror it is then sent to the reciving ground sation

Question 10

The four different uses of satilites and why there are useful

Answer 10

Gps- used to find out longitude latitude and altiyde, locatons of places. orbit on a 12 hour cycle.
Weather forecasting- geostationary or polar orbiting, used to ovserve the weather and climite of the earth.
Communication- geostionary orbit, relays and amplifies signals, provide communication between differint places on earth.
Scientific discovery and space exploration- used to find out things about earth.

Question 11

Entry/Re-entry back into earths atmosphere?

Answer 11

When a ,oving object enters earths atmospere there is air friction and it slows down.The air friction changes soem of the energy from kintic to heat. This tends to show a orange glow around the object, sometimes some of the heat energy melts part of the object. On-rentry scientis must calculate the tempuatre change to ensure it returns safely.

Question 12

Challanges in space travel

Answer 12

distance- currently takes to long to get there
speed- speed is difficult to build up so for unmaned missions a slingshot method is used.
mavoring- no friction in space so landing must be done extremely carefully
energy- there is mininal supplies in space so space carft must be se-sufficent and do this using solar arrays

Question 13

Risks accociented with space travel

Answer 13

Rocket population, micro-meteriotes, solar flares and radiation, no atmosphere, space junk, re-entry into the atmosphere.