1. Part one

2. Technology used for communication
By Chelsea Solomon

3. A Yellow brick.
A yellow brick is a tracking device that has a self-contained GPS and Iridium Satellite transceiver inside. It sends the users location to a Google earth interface.

4. Solar panels.
Solar panels are used for power to recharge things like satellite phones or GPS’s.

5. Iridium 9505 handset.
This device can receive short SMS messages and send them out as well.

6. Rucksack generator
As you walk it charges up a generator in your backpack, it is a goods use for human energy. You can use it to charge GPS devices or mobile phones.

7. Knee hinge
Is a device the is placed behind your knee and as you walk it charges like a battery. It can be used to talk on your mobile phone.

8. Sends a signal to a satellite search
Then it goes to a Rescue coordination
A helicopter is then sent out to find you.

9. Part two

10. Technological advances to bike riding  things that can make your bike a lot better.

11. Tyres
The tyres on your bike can make a lot of difference. For mountain bike riding you need mountain bike tyres. You can advance them to thicker or more grip. There are a lot of tyres that are made for special ridings like crack proof and bindy proof, were as there used to just be one kind of tyres.

12. Gears
You can get very complicated gears for your bike, or easy ones depends on which sort of bike your riding a road bike or bmx. There are a lot of gears now, up too around 33!

13. Pedals
Pedals are an advancement on your bike, some help your feet stay on when you are doing long bike rides, they have special grips.

14. Helmets
Going from the flimsy, thin stack helmets to the protected breathable helmets these days. There has been a great improvement.

15. Seats
The seats in the old days were really hard to ride on, the seats these days are comfortable and you can get them specially made. These days they have a lot of padding inside of them.

16. Suspension
Back in the day the bikes didn't have very good suspension but now they have them every were sometimes even on the handle bars.

17. Mountain biking clothes
There are some good armours and thermo clothes for riding. This is and advancement because some of them help you go faster. There never used to be any special clothes for bike riding.

18. Shoes.
Some shoes have been made with hooks on the bottoms of them to click into your pedals, it is an advancement because it helps keep your feet on and you feel secure.

19. Speedometers and monitors
On the latest bicycles they can have speedometers to see your speed in a race and special monitors to measure you heart rate or mileage. There never used to be any of these technologys.

20. Disabled bikes.
There are bikes for everybody were as there only used to be one kind of bikes. Anybody can ride a bike. Some of the bikes lie down and some are chairs.

21. The end!