Aim: How are time zones created?

Slides:

Advertisements

Similar presentations

Advertisements

Locating Positions on Earth

Calculating Time Travel

Mathematics for Airline Scheduling

Latitude and Longitude Part II

Time Hess, McKnight’s Physical Geography, 10 ed. pp

Time Zones CGC1D.

Latitude & Longitude.

Locating Positions on Earth

©G Dear 2009 – Not to be sold/Free to use

World Time Zones and the International Date Line

Latitude & Longitude.

Where on Earth are You?.

Time Zones.  The Earth is currently divided into 24 major time zones so that everyone in the world can be on roughly similar schedules (noon being roughly.

Canada’s Time Zones.

International Time Zones

RAP Given the following pie chart, explain ALL the data. (You need to duplicate the pie graph in your ISN.)

LONGITUDE (to measure East-West), is all a matter of time…

RRB PAGES Local Time and Time Zones. Solar Noon and Time Zones Solar Noon: when the sun is at the highest point in the sky. This may not be the.

Social Studies 9 Chapter 2 Time Zones.  A time zone is a region of the Earth that has adopted the same standard time, usually referred to as the local.

EARTH’S ROTATION CHAPTER 4.2. Objectives Give evidence of Earth’s rotation. Give evidence of Earth’s rotation. Relate Earth’s rotation to the day- night.

Locations on Earth Created By: Mr. Kreeger.

Math and Geography in Action SS9 –Mr.B.  Cdn. Sir Sandford Fleming in 1879  Great Britain became 1 st country to set standard time  Railways forced.

Mapping Our World Latitude and Longitude Cartography –Science of mapmaking –Uses imaginary grid of parallel lines and vertical lines to locate points on.

Word of the Day Nautical Mile: One minute of arc length of latitude or longitude at the equator, or 1852m.

Latitude, Longitude, and Time September, 2011 Coordinate System A system used for determining the coordinates of a point. Coordinates = Numbers Latitude.

Bell Question Define the following terms: 1. Rotation 2. Revolution 3. Precession 4. Nutation Answer the following question: 5. What would happen if the.

PSC 121 Prince George’s Community College Barbara Gage Latitude and Longitude.

What time is it??? World Time Zones See pg 30 of Holt purple text.

Understanding Latitude & Longitude.

Celestial Navigation How to determine latitude and longitude using the stars!

Aim: How do we find longitude? Topic: Unit 1 Main Idea: Time zones.

Longitude and Time.

Time Zones Astronomy Unit Ch Effect of Earth’s rotation Created based on the rate at which the sun appears to move across the sky ▫Sun rises in.

AP HUMAN GEOGRAPHY TIME ZONES. LONGITUDE’S ROLE Longitude plays the most important role in telling time There are 360◦ of longitude (180◦ West and 180◦

Topic 4. How do we determine a frame of reference for time? A)Day – based upon one rotation of the Earth on its axis B)Month – based upon the length of.

Latitude and Longitude. +meridian.

Coordinate system A method of locating points by labeling them with numbers called coordinates.

Time Zones in early days everyone set their clocks according to the sun - it was noon (12:00 p.m.) when the sun was at its highest point (its "zenith")

Time Zones & Ellipse Pathway Objective: To map out the Earth’s time zones and draw the ellipse orbit around the sun with equinoxes and solstices.

Locations on Earth Created By: Mr. Kreeger Created By: Mr. Kreeger.

GREENWHICH MARIDIAN.

Locating Positions on Earth

Do NOT Copy Time ZONE Confusion

AIM: What are time zones and why are they important?

FACTS ABOUT THE EARTH, THE SUN AND TELLING TIME

How do maps help us model the Earth?

Do Now Take out your Homework. Work on questions 7-9 on your lab.

-Time is based on longitude lines.

Aim: How are meridians used to determine time zones?

Aim: How do we use time zones to determine longitude?

How Do We Use Earth’s Motion to Determine the Length of a Day?

AIM: How is Longitude related to Time Zones?

Chapter 14 Section 2 What are time zones?

Time Vocabulary: Time difference hour time zones elapsed

Chapter 14 Section 2 What are time zones?

AIM: What are time zones and why are they important?

Time Vocabulary: Time difference hour time zones elapsed

After School Review Commack High School

Presentation transcript:

Aim: How are time zones created?

Objectives Understand the relationship between longitude, rotation and time. Calculate local time when given GMT Calculate longitude when given GMT

http://www.youtube.com/watch?v=hSGeSRdztzM&feature=related http://video.google.com/videoplay?docid=-5041127474937930014# http://www.time.gov/ http://www.usflashmap.com/products/time_zone_map/actionscript-time-zone-map.htm

1. How are time zones created? Earth is divided into 24 time zones based on longitude. Each zone is about 15o of longitude = 1 hour The Earth rotates 150/hour And also in here

The time zones are not perfect. http://www.timezonecheck.com/

Ex 1: 6 am in Denver = ________ in San Francisco? As you travel WEST, time goes ______________ (subtract) As you travel EAST, time goes _____________ (add)

Ex 2: 4 pm at A = __________ at B?

Ex 3: If you could instantly travel 45o west from NYC, what would be the time difference?

2. What is solar noon? 12:00 pm is known as solar noon or local solar noon, or the time of day when the sun reaches its highest point in the sky. Locations with the same longitude have the same solar noon, because the sun hits its highest point in the sky all along that line of longitude at the same moment.

3. What is Greenwich Mean Time (GMT)? The prime meridian passes through Greenwich, England. Your longitude can be calculated by comparing local time with GMT. Your longitude = difference from GMT x 15o/hour

Ex. 4: What time is it in Greenwich, England (at 0° longitude), when it is noon in Massena, New York?

Example 5: Your local solar noon occurs at 8 AM Greenwich time Example 5: Your local solar noon occurs at 8 AM Greenwich time. What is your longitude?

Example 6: Your longitude is 150oW and the time is 6:40 AM Example 6: Your longitude is 150oW and the time is 6:40 AM. What time is it in London, England?

4. What happens when we cross the International Date Line? September 1, 2010 September 2, 2010

5. Time Math Example: (hh:mm:ss) Remember: You must “borrow” or take 60 minutes or 60 seconds 11: 15 : 32 -07: 23 : 04 3: 52 : 28