**THE NEED FOR SPEED** |

**1.** | What is the speed of light in miles per second (to the nearest thousand)? |

| **186,000** |

**2.** | How long, to the nearest tenth of a year, does it take light from the Sun to reach our nearest neighbouring star: Proxima Centauri? |

| **4.2 years (discretion of plus or minus 0.1 years)** |

**3.** | In miles per hour, how quickly does the Earth orbit the Sun? |

| **70,000 mph** |

**4.** | How long does it take from light from the Sun to travel to Earth? |

| **8 minutes and 20 seconds (discretion plus or minus 20 seconds)** |

**5.** | What is the current land speed record? |

| **763.035 miles per hour (discretion plus or minus 5 mph)** |

**6.** | What was the top speed in miles per hour of the first ever train? |

| **4 miles per hour (discretion of plus or minus 1 mph)** |

**7.** | What is the speed of sound at sea level? |

| **761.02 mph (discretion plus or minus 5 mph)** |

**8.** | At the equator, in miles per hour, what speed of the ground beneath your feet, as a result of the Earth's rotation? |

| **1,000 mph** |

**9.** | What speed in miles per hour must a rocket attain to escape Earth's gravity? |

| **18,000 mph** |

**10.** | On average who's hearts beat faster; men or women? |

| **Women** |