Hereâs how long the iOS 8.1 upgrade takes. You should make sure you start the iOS 8.1 download on a good internet connection, when you have time to wait for the download to complete. You need WiFi to start this and you need at least 50% battery life.
On average the moon is 380,000 km (235,000 miles) from the Earth, a distance of about 110 times its own diameter. A tennis ball would then have to be 110 x 6.7 cm = 7.37 meters (about 24 feet) from the basketball.
The average Earth-Moon distance is about 385,000 km, which is about 9.5 times the circumference. To make a quick scale model of this system, you will need a globe and a ball about a quarter of it's diameter to represent the Moon. Take a string and wrap it around the globe's equator about 9.5 times.