1 - Chondrites, carbonaceous chondrites, ataxites and hexahedrites are all types of what?
2 - Roughtly how long ago did the Sun form?
3 - Who allegedly invented a mechanism where a pipe fitted in spiral inside a tube will raise water or grain when turned?
4 - Who discovered Charon, the satellite of Pluto?
5 - To which country does the .ie domain suffix belong?
6 - What does the first Moore's law state?
7 - Which of these is a star?
8 - Refraction is due to:
9 - From which country is Linus Torvalds, writer of the Linux kernel?
10 - Which of these was NOT the name of a US Spacecraft?
11 - If a phenomenom has a periodicity of 6 miliseconds, it has a frequency of:
12 - What are the four bases found in deoxyribonucleic acid (DNA)?
13 - Who owns the trademark C(ompact) D(isc)?
14 - Who first observed the moons of Jupiter?
15 - Which physical law is behind the idea of a rocket engine?
16 - For what accomplishment did Einstein receive a Physic Nobel Prize?
17 - What element has "H" for symbol?
18 - Which of these is a self propagating, self replicating computer program?
19 - What is the speed of light?
20 - What is approximatively the circumference of the Earth?