Maps and globes Flashcards
Name 2 causes of day and night
Rotation of the earth on its axis
Light does not bend it travels in a straight line
How many degrees equals 1 hour so therefore 24hrs equals how any degrees
1hr = 15 degrees 24hrs = 360 degrees
What is the shape of the earth?
Geoid
Name a few differences between longitude and latitude
LONGITUDE Run vertically Circles globe from north to south Closer at the poles All same length Used to work out time zones
LATITUDE Circles globe from west to east Horizontally Not all equal in length Equidistant apart Used to work out climate
In which direction does our shadow fall if we are in the Southern Hemisphere ?
Our shadows fall south as the sun faces north
What does CAT stand for?
Central African Time
Name the tropic that is closer to the North Pole
Tropic of Cancer
Which tropic is closer to the South Pole?
Tropic of Capricorn
Places to the east of the Greenwich would be ahead or behind of time?
Ahead of time
Places to the west of the Greenwich will be ahead or behind of time?
Behind of time
On which line of longitude does the international date line lie?
180 degree
What is the international date line?
It divides the world into the eastern and western hemispheres.
Used to work out time zones
What does SAST stand for?
South African Standard Time
What is SAST?
The time zone that South Africa follows
How many degrees is the tilt of the earth away from its perpendicular?
23,5
What does the angle of the earths axis affect?
Length of day and night
Cause of seasons
When the earth is in shadow of the sun for a long time, what season would we be in?
Winter, where the days are shorter and the nights are longer
How long does it take the earth to revolve?
365 and a quarter days
What is an image?
Pictures that are put together from different kinds of data
How do we receive satellite images?
Sensors send the data to nearest receiving station on earth and the computers process it to produce different satellite images
What are sensors?
Instruments that are sensitive to light, movement and heat
When does the summer solstice occur n the Southern Hemisphere ?
December 21/22
When does the summer solstice occur in the northern hemisphere ?
June 21/22
When is the winter solstice in the Southern Hemisphere ?
June 21/22
When is the winter solstice in the northern hemisphere?
December 21/22
When is the spring equinox in the Southern Hemisphere ?
September 21/22
When is the spring equinox in the northern hemisphere?
March 21/22
When is the autumn equinox in the Southern Hemisphere ?
March 21/22
When is the autumn equinox in the northern hemisphere ?
September 21/22
What does the word equinox mean?
Equal…length of day and might are exactly the same
What does solstice mean?
Standing still of the sun
The longest line of latitude is ?
The equator
What are the uses of a satellite?
Examine conditions about the earth: cloud pattern, soil erosion, vegetation
What are weather satellites used for and who would use them?
Meteorologist use it to determine the weather.
Used for;
Position and types of clouds
Sensors would determine temperature, wind speed, cloud cover
