4.1.1+Brainteasers

 1. The first lunar base was completed last year. One company, aptly named "Out Of This World Vacations", offers tourists a week-long visit to the Moon. The cost of such a vacation is extremely high. "It was awesome! Wait till I show you the Moon rocks I brought back," Alex boasted as a crowd gathered around him on the school grounds. "What's going on here?" Kari whispered to the person beside her. "Alex is telling us about his experience on the Moon." "I felt like an Olympian; I was able to jump more than a metre straight up!" The crowd was clearly impressed so Alex continued. "There are no clouds and no light pollution from big cities, so there was an amazing view of the stars. And while you were here, possibly watching the moonrise, I watched the earthrise - right from when it was just visible on the horizon until it was overhead." "Why should we believe you actually went there?" one sceptic asked. "I knew there would be doubters, so I brought back a few Moon rocks. I collected these while on a moonwalk in the Sea of Tranquility. Hey, Jack, you collect rocks, this would be a stellar addition to your rock collection! I'm willing to sell you a rock for only..." "I've heard quite enough," Kari interrupted. "Jack, save your money for your own vacation."

What had Kari heard that indicated the story wasn't true? 

** Have you seen the far side of ** 2. I tremble involuntarily whenever something breaks. Scientists hope with some time they'll learn from their mistakes.

Faults are to blame for my power I helped to form the Earth Not realizing this simple fact people underestimate my worth.

I can be quite dangerous; I'm the start of many ends; when I'm 12 or higher, your foundation bends.  3. Recently Fred hasn't been getting much attention because Liz, his sister, just received a medal for the spelling bee. To get attention one day, he came into the living room and said, "There was an earthquake at school today during recess and everybody felt it! It was amazing!" His mom, who didn't know too much about science asked if he knew how strong it was. He told her they went to a seismograph research center as a last minute field trip (because of the earthquake) and found out it was a 2.0. Without turning his head, his dad said it was a lie and kept on doing what he was doing. How did he know it was a lie?  4. Why are the European Ariane rockets launched from the Korou site in French-Guyana, South-America, and not simply from some place in Europe where the rockets are partly built?  Brainteasers answers