maps and globes * Flashcards
3 main scales of maps and explain
world
maps of the world and continents
local
maps of provinces and one country
regional
parts of the continent
explain small scale map and large scale map
small scale
from far
large scale
close up
name the scales on the map
ratio
1:2 000 000
line
0_10_20_30 km
word
one centimeter is equals to fifty kilometers on the ground
what is the earth’s axis
an imaginary line between the north and south pole which the earth rotates on
what is rotation
turning around a fixed point
as the earth rotates…
different parts of the earth’s surface move in and out of the suns rays
earths rotation is the cause of…
day and night
the earth rotates from…
west to east
what is the earths axis tilt
23 1/2 degrees
the tilt of the earths axis affects the
length of day and night and is responsible for seasons
how long does it take for earth to complete 1 revolution
365 1/4 days
definition of tilts
inclined at an angle
definition of perpendicular
perfectly vertical forming a right angle with the horizontal
revolve definition
circular movement around an object
definition of revolution
one complete circular movement around an object
explain equinox
> when the length of the day and the night are the same number of hours
equinox means equal night
occurs on the 21 of march and 23 of september
the angle of the earths axis tilts is neither towards nor away from the sun
sun is directly above the equator
associated with spring and autumn
explain solstice
> when one hemisphere has the longest number of hours of daylight and the opposite hemisphere has the shortest number of hours of daylight
occur on 21 december and 21 june
associated with summer and winter
21 june= sun is above the tropic of cancer
21 december= sun is above the tropic of capricorn
the sun reaches its highest point in the sky at…
noon
the angle of the earth’s axis affects the …
amount of sunlight certain areas of the earth receive at different times of the year
in antarctica the sun does not set for ….
3 weeks
how is angle of the sun calculated
angle of the sun over the equator - latitude = the angle of the sun in the sky
main reason for different parts of the earth having different temperatures
amount of heat the earth receives from the sun
what is the south african standard time
the time every place in south africa uses
why should south africa have two time zone
because the 15 and 30 degree line of longitude pass through the country
why doesnt south africa then have 2 time zones
the government decided to adjust the time zones to fit the borders
the south african standard time is based on the …
30 degree line of longitude
places to the east of the greenwich meridian are … by … for every … line of ….
ahead
1 hour
15 degree
longitude
what is a time zone
one of the 24 divisions of earth which have the same time
we measure time against the ….
position of the sun
examples of countries that have several time zones
Australia and USA
how many time zones does china have
1 but it should have 4
the international date line divides the world into…
eastern and western hemisphere on the pacific ocean part of the world
… and … have the same time but are only …
tonga and american samoa
one day apart
what is the international date line
the 180 degree line of longitude opposite the greenwich meridian where times change by one day between the eastern and western hemispheres
