Geographical Skills Flashcards
How do you work out the mean?
Add up all the numbers, then divide by how many numbers there are.
How do you work out the median?
Put the numbers in order. It is the middle number.
If there is an even number of items in the data set, then the median is found by taking the mean (average) of the two middlemost numbers.
How do you work out the mode?
Occurs most often.
How do you work out the Interquartile Range of a set of data?
Order the data from least to greatest.
Find the median.
Calculate the median of both the lower and upper half of the data.
IQR is the difference between the upper and lower medians.
What physical features are on atlas maps?
Relief (Height and Shape of land)
Drainage (Rivers)
What humans features are on atlas maps?
Population distribution
Population movements
Transport networks
Settlement layouts
How many km is every square on an OS map?
1 x 1 km
When finding a latitude, what is the reference always followed by?
N (north) or S (south) of the equator.
When finding a longitude, what is the reference always followed by?
E (east) or W (west) of prime meridian.
When describing the results of graphs, charts and maps what three things do you need to ensure that you do?
You say overall what you can see
You include data
You need to talk about differences (ODD)
How do you find a 4 figure grid reference?
Go along the bottom and up - the point where you reach you should draw an L and that is the square you need to look in.
How do you find a 6 figure reference?
Find the 4 FGR square first.
Then split the bottom of the square up into 10 and do the same for the side of the square.
Look for the 3rd number along the grid reference along the bottom and the 6th number along the grid reference on the side.
How do you work out the distance on a map?
On a piece of paper or using a ruler measure the difference from one location to the other. You may need to move it around it the road etc is not straight.
Then place this onto the scale.
Ensure you write the units on the end e.g Km.
What are the orange lines on an OS map and what do they show?
Contour lines, height of land given in meters usually.
What is GIS?
Geographical Information Systems, it allows data to be mapped and allows you to use layers showing different things on maps.
