by BlastRoom
Why time zones exist, how many hours apart two places are, and what the date line does.
#us_hs_world_geography

20 questions
One question set, multiple game modes. Tap any game to see it in action. Not sure which to pick?
Answer to place stones and capture territory.
Outrun the snow together.
Earn blasts, then hunt the other team.
Answer to earn energy, then climb.

The class blasts through walls together.
Bid on mystery lots. Most money wins.
Sell tours. Nice, standard, or a total scam.
Answer, restock, and serve the rush.
More correct answers pulls the rope your way.
Answer, then shoot down the alien wave.
Answer, then tap to leap the frozen ridge.
It is 9 a.m. in London, and Tokyo runs nine hours ahead of London. What time is it in Tokyo?
Los Angeles is three hours behind New York. If it is 4 p.m. in New York, what time is it in Los Angeles?
Istanbul is one hour ahead of Cairo. When it is noon in Cairo, what time is it in Istanbul?
Beijing is two hours behind Sydney. If it is 10 p.m. Monday in Sydney, what time is it in Beijing?
London is six hours ahead of Mexico City. When it is 7 a.m. in Mexico City, what time is it in London?
Honolulu is two hours behind Anchorage. If it is 11 p.m. Tuesday in Anchorage, what time is it in Honolulu?
A weather report lists Quito at UTC−5 and Madrid at UTC+1. If it is 8 a.m. in Quito, what time is it in Madrid?
Earth turns a full 360 degrees in 24 hours. How many degrees of longitude does one standard time zone span?
Why do different longitudes usually have different local times?
Earth turns about 15 degrees of longitude each hour. Two meridians are 45 degrees apart, so their local times differ by how many hours?
Which reference line is used as 0 degrees longitude for numbering time zones from UTC?
Many time-zone boundaries bend instead of following exact 15-degree strips. What best explains those bends?
A plane crosses the International Date Line heading west from Alaska toward Japan late Monday. What happens to the date?
A ship crosses the International Date Line heading east from Fiji toward Hawaii on Thursday. What happens to the date?
The International Date Line roughly follows which line of longitude?
Place X, just west of the International Date Line, uses UTC+12. Place Y, just east of it, uses UTC−12. How do their clocks and calendars compare?
Why is the International Date Line needed on a world time-zone map?
Washington, D.C., is one hour ahead of Chicago. A traveler flies east from Chicago to Washington, D.C. What should the traveler do to a watch?
London is three hours behind Moscow. A traveler flies west from Moscow to London. What should the traveler do to a clock?
City B is two standard time zones east of City A. How does City B’s local clock compare with City A’s local clock?
Crack the passcode before the zombies get in.
Answer, then swat bugs for bonus points.
Race through questions at your own speed.
Same question on every screen. Fastest wins.

Pick a tile, answer, hit bonuses and steals.
GIS, GPS and Remote Sensing
20 questions