Maps And Globes Flashcards
What is a scale?
Making something smaller
What are maps
Accurate smaller versions of larger areas on land
What are the three types of scales?
Word
Ratio
Line
What are word scales?
Using words as though speaking to say what one cm on map represents as distance on ground
What is a ratio scale?
When the units are both represented as cm on both sides
1:500
(1cm on map = 500cm on land)
What is a line scale?
Using a half shaded bar to represent what 1 cm on map equals on land
What do latitude and longitude do?
Help us find the exact position of something on a map
Which way do lines of latitude run?
Horizontally. They run from the west to the east and divide the globe from the north to the south and it is called the equator.
0° line of latitude.
What’s the weight of the line of longitude run?
They run vertically joining the north and south pole and dividing the world from west to east
What is the longest line of latitude?
Equator or
0° line of latitude
What is the 0° line of longitude?
The prime/Green which Maredian
Where is the international dateline?
At 180°
Why is it important to know the coordinates of a place on a map
So that we can find any place we need
How many minutes are there in 1°
60
How do decided a degree into minutes
- Divide 1° into half this is 30 minutes
- Divide each half into three column this equals 10 minutes
- Divide each 10 minute column into 10 equal one minute coloums
How do we work out coordinates
By combining the latitude and longitude
Does the time stay the same everywhere in the world?
No, the time changes by one hour for every 15 degrees of longitude
Why do most countries adjust their time zones?
Economic efficiency
What is the international date line?
Follows 180 degree line of longitude
Divides the world into eastern and western (pacific ocean side)
It is adjusted to fit with the location and shape of countries
Date changes either side side of IDL
Places in the eastern hemisphere are a day earlier than places in the Western Hemisphere
South African standard time (SAST)
Should have 2 time zones
Government decided to make adjust -economic efficiency
Explain the Earth revolution around the sun
Earth is tilted at 23 1/2° angle
The angle of the axis affect the length of day and night and causes different seasons
Rotates on its own axis will revolving around the sun
Causes day and Night
Takes 24 hours to rotate on its own axis
The Earth takes 365 1/4 days for one revolution the sun
What happens in one part of the Earth is leaning away from the sun?
This area is winter
Days are shorter
Nights are longer
What are the equinox
This is the time of year when day and night are the same number of hours for all places in the world
There are two every year called autumn and spring
Autumn is on 21 March
Spring is on the 23rd of September
The sun is directly over the equator
