Handboek bladsy: 4 - 39Beskrywing: GR.8 GEO Kwartaal 1 TeorieHandboek bladsy: 4 - 39Beskrywing: GR.8 GEO Kwartaal 1 Teorie 1

Work oder of Term 1’sTopic 1 :

To understand the focus of this topic, you will investigate the following key factors:

Unit 1:Maps and globes

1. World and local maps:1.1 World Map (Continents and Oceans)1.2 Map symbols

2. How do we determine position and measure actual distances on a map?2.1 The 16 Main Compass Directions2.2 Determine the position between two places from each other, on a map.2.3 Coordinates2.4 Different types of map scales2.5 Determine the actual distance between two places on a map, in m or km.

Unit 2:The globe

3. How do we experience day and night?3.1 The Earth’s rotation on its axis.3.2 The Earth’s revolution around the sun.

4. Why do we experience seasons?4.1 The Earth’s revolution .4.2 Geological and Atmosphere changes during the seasons.

Unit 3:Satellite images

5. What is the value of satellite images?5.1 Information of different satellite images.

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Unit 1: Maps and globes1. World and local maps:

1.1 World Map (Continents and Oceans)

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Unit 1: Maps and globes1. World and local maps:

1.2 Map symbols

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Unit 1: Maps and globes2. How do we determine position and measure actual distances on a map?

2.1 The 16 Main Compass Directions

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Unit 1: Maps and globes2. How do we determine position and measure actual distances on a map?

2.2 Determine the position between two places from each other, on a map.

WORKSHEET 1: Positions of Continents

1.) What is the position that Africa is located from America?2.) What is the position that Australia is located from South America?3.) What is the position that Greenland is located from Europe?4.) What is the position that Antarctica is located from Africa?5.) What is the position that Africa is located from Antarctica?6.) What is the position that North America is located from Europe?7.) What is the position that North America is located from Asia?

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Unit 1: Maps and globes2. How do we determine position and measure actual distances on a map?

2.3 Coordinates

• What is a coordinate?– Coordinates is the

intersection of a longitude and latitude. It is used to get the precise position of a location on a map

• How are coordinates measured?– A place's coordinates are measured in ...

degrees (˚), minutes (') and seconds ('')

In 1 degree there are 60 minutesIn 1 minute there are 60 seconds.

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Unit 1: Maps and globes2. How do we determine position and measure actual distances on a map?

2.3 Coordinates

Breedtelyne: (Horisontale lyne om aarde) Lengtelyne: (Vertikale lyne om aarde)

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Unit 1: Maps and globes2. How do we determine position and measure actual distances on a map?

2.3 Coordinates

• What comes first?– Latitude: Horizontal lines on the map

In South Africa – always SOUTHof the equator. (Latitude)

– Longitude: Vertical lines on the map

In South Africa – always EASTof the die Greenwich. (Longitude)

• How do we write coordinates? First: Latitude - Degrees, minutes, seconds

Second: Longitude - Degrees, minutes, secondsExample: 23˚01’ South and 29˚01’ East

23˚02’ South and 29˚30’30” East

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Unit 1: Maps and globes2. How do we determine position and measure actual distances on a map?

2.3 Coordinates

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Unit 1: Maps and globes2. How do we determine position and measure actual distances on a map?

2.3 Coordinates

REMEMBER! For coordinates in South Africa, the Latitude line (horizontal) will always be South of the Equator and the Longitude Line (Vertical) will always be East of the Greenwich.

Example:

23˚01’ South and 29˚01’ East

Example. A’s coordinates are 23˚01’S & 29˚01’E

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Unit 1: Maps and globes2. How do we determine position and measure actual distances on a map?

2.3 Coordinates

WORKSHEET 2: Coordinates

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Show interactive video from e-book to learners:

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WERKKAART 3: ‘n Graadnet/Koördinaatnet

Unit 1: Maps and globes2. How do we determine position and measure actual distances on a map?

2.3 Coordinates

Die kaart by posisie X se naam sal bv wees: 3025BC

Gee nou die name van die volgende kaarte:1.Die kaart reg suid van 3025BC2.Die kaart reg noord van 3025BC3.Die kaart Suid-wes van 3025BC4.Die kaart reg oos van 4623AB

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Unit 1: Maps and globes2. How do we determine position and measure actual distances on a map?

2.4 Different types of scales

What is a scale? • A scale shows the size of an area in relation to the

actual size• Type of scales– The verbal method• This is a statement• Example: 1cm = 8km• It means that 1cm which is on the map is equal to 8km in

actual distance..

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Unit 1: Maps and globes2. How do we determine position and measure actual distances on a map?

2.4 Different types of scales

– The Graphic Method• depicts scale using a line, with separations marked by smaller

intersecting lines, similar to a ruler. By measuring the distance between two objects on a map, and then referring to the graphic scale

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Unit 1: Maps and globes2. How do we determine position and measure actual distances on a map?

2.4 Different types of scales

– The Fractional Method• uses a representative fraction to

describe the ration between the map, and the real world. • In this example 1 unit of distance on

the map represents 50,000 of the same units of distance in the real world.

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• What is distance?– Distance is the length of the space between two points.

• Straight line distance or Crooked line distance– Straight-line distances can be measured with a ruler– Crooked line distances should be measured with a paper

strip.

Unit 1: Maps and globes2. How do we determine position and measure actual distances on a map?

2.5 Measure the actual distance of two places on a map, in km or m.

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Unit 1: Maps and globes2. How do we determine position and measure actual distances on a map?

2.5 Measure the actual distance of two places on a map, in km or m.

How do I determine the distance between two places?

– Formula vir km: Distance (mm) x Map Scale1 000 000

– Formula vir m: Distance (mm) x Map Scale 1000

– BV. The distance between two places is 55mm.How far in (a) km and (b) m are they apart?The map scale is 1:50 000.

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a. Distance (mm) x Map Scale 1000000

= 55 x 50 000 1000000

= 2.75km

ANSWERS OF FORMULA SLIDE:(DISTANCE between two places on a map)

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ANSWERS OF FORMULA SLIDE:(DISTANCE between two places on a map)

b. Distance (mm) x Map Scale 1000

= 55 x 50 000 1000

= 2750m

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DISTANCE between two places on a map:Homework

a. The distance between two places on a map is 65mm. What is the actual distance in km? The map scale is 1:50 000.

b. The distance between two places on a map is 65mm. What is the actual distance in m? The map scale is1:50 000.

c. The distance between two places on a map is 30mm. What is the actual distance in km? The map scale is 1:50 000.

d. The distance between two places on a map is 80mm. What is the actual distance in m? The map scale is 1:50 000.

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DISTANCE between two places on a map:Homework Answers

1) distance (mm) X map scale 3) distance (mm) X map scale1 000 000 1 000 000

= 65 mm X 50 000 = 55 mm X 50 0001 000 000 1 000 000

= 3,25 km = 2,75 km

2) distance (mm) X map scale 4) distance (mm) X map scale1 000 1 000

= 65 mm X 50 000 = 80 mm X 50 0001 000 1 000

= 3250 m = 4000 m

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Unit 1: Maps and globes2. How do we determine position and measure actual distances on a map?

2.5 Measure the actual distance of two places on a map, in km or m.