1. mental monday 2. timezones 3. reminder: test thursday!
TRANSCRIPT
1. Mental Monday 2. Timezones 3. Reminder: Test Thursday!
Parts of a Map Types of maps Compass Rose Scale- types of scale (3 types), small scale
vs. large scale Latitude and longitude Hemispheres Topographic maps Contour lines Timezones
CGC1D
The Earth has 24 times zones because it takes the Earth 24 hours to revolve around the sun
Each time zone is one hour apart Each time zone is 15 longitude
360 / 24 = 15 Every place within a time zone has the
same time, referred to as its “standard time”
Standard time zones were not required prior to the 1800s because it was impossible for people to travel large distances in a short period of time.
The development of rapid railway transportation changed travel dramatically, allowing people to travel large distances quickly.
This caused confusion, since every town set their own clocks by the sun e.g. 8:00 in Ottawa would
be about 7:45 in Toronto A Canadian engineer
named Sir Sandford Fleming proposed a system of standard time zones. This relied on a consistent system of latitude and longitude.
Canada spans 6 time zones: Pacific, Mountain, Central, Eastern, Atlantic and Newfoundland
We are in the Eastern Standard Time Zone If it is 1:00pm in Ottawa, it is the same in the
entire Eastern time zone In Canada, this includes all of Quebec and most
of Ontario (as far west as Thunder Bay) In the US, this includes all of the eastern states
and as far west as Michigan
The Prime Meridian is the centre time zone The zone extends 7.5 on either side of the 0
longitude Time in this zone is called Universal Time
(UT) and the standard time in other zones is compared to it
Time zones west of the prime meridian are earlier than the universal time (the time at the prime meridian) e.g. If UT is 12:00am, next time zone west is
11:00pm.
Time zones east of the prime meridian are later than the universal time (the time at the prime meridian) e.g. If UT is 12:00am, the next time zone east
is 1:00am.
Some countries modify time zones (change them from straight lines) for political reasons e.g. All of China is in same time zone, so all of
the country is on the same time. Some places are located where time
zones meet For example St. John's, so it is given half a
time zone (1/2 an hour)
Many parts of the world change their time according to the season
During the summer, daylight savings time is used to extend daylight hours
For example, the sun in standard time would set at 8:00pm. When time is in daylight savings, it would set at 9:00pm (therefore 1 more hour of daylight)
Why do we do this?
Energy is saved and people get to enjoy more of the day i.e. wake up when light, go to bed when dark
In Canada, Daylight Savings begins on the second Sunday in March and ends the first Sunday of November
“Spring ahead, fall back” This year, daylight savings time begins
on March 10th We set the clocks ahead one hour
It will end on November 3rd We will set the clocks back one hour
Observe Daylight Savings Time Tried it but gave it up
Never used it
Saskatchewan is naturally located within the Mountain Standard Time (MST) – the same timezone as Alberta.
Under The Time Act of 1966, Saskatchewan adopted Central Standard Time, and began sharing the same timezone as Manitoba
Since they don’t observe Daylight Savings Time, they share the same time as Alberta during the summer months and the same time as Manitoba during the winter months
The issue has been hotly debated in Saskatchewan since 1966 when the Time Act was introduced.
Some farmers fear that shifting the clocks would disrupt feeding and milking schedules for animals. They are also not happy about the prospect of having their children wait in the cold pre-dawn of a Saskatchewan winter for the school bus.
Businesses have long pushed for the change to standardize their operations.