Scale
How is scale expressed in Statement form, give an example using the numbers 2 cm and 5 km
Scale is usually expressed as in statement or verbal form eg- two centimeters to five kilometers
during the medival period _________ excelled in map making
Arab geographers
Name 3 gases the atmosphere contains
either three of these :
nitrogen, oxygen argon carbondioxide neon ozone hydrogen, helium and methane
How does the greenhouse effect affect the earth (any 2)
climate change, shortage of fresh water, increased health risk, loss of biodiversity and increase in evaportaion
how does the air move in the stratosphere
horizontaly
Name one limitation of the statement form of scale
either -
The statement method can only be used by those who are familiar with the unit given in the measurement givin in statement
_________was the first to draw a world map in 1538
Gerardus mercator
How much % is nitrogen present in
78%
dobson unit {DU}
where does the ionosphere lie?
in the thermosphere
What is r.f scale also known as and why
R.F scale is also known as Universal scale because it uses no units of measurement and it can also be converted into statement
When was Theatrum Orbis Terrarum published
Heavier particles like oxygen and water vapour are found where?
in the lower layers of the atmosphere
What is the montreal protocol and name 2 ways we can follow it
it is a protocol aimed at achieving less ozone depleting substances and either:
make sure refrigerators are properly disposed
technicians must ensure they recycle and recover ODS
while repairing or renovating make sure to get rid of ODS safely {eg insulation foams}
inform yourself on OD
how old is the survey of india
250 yrs (founded 1767)
Explain how graphical linear scale is depicted
There is a line and the line is usually divided into parts such as primary divisions and usually the first primary division is divided into smaller parts known as secondary divisions.
Where does the earliest known map show
babylonia (modern day iran)
name 2 impurities that are found
carbon monoxide and smoke
What does the ozone layer do?
It absorbs the harmful UV rays and protects life on earth
what is geography (the study of???)
interrealtionship of the earths surface and physical feauters human activities
convert 2cm : 5km into rf
2cm :5 x 1000 = 5000 m
2cm :5000 x 100 = 5,00,000 cm
thus 2cm : 5,00,000 cm
or, 1cm : 2,50,000
When was remote sensing introduced and what did it help develop
1970 and geographic information system
temperature in the troposphere deecreases with the rate of _____ for every ______meters
1 degree celcius 165 meters of ascent
how does global warming work? and NAME THE GASES INVOLVED IN THE GREENHOUSE EFFECT
CO2,CH4 and N2O are greenhouse gases that trap heat within the atmosphere keeping our earth warm
how to measure straight surface on a map
measure ab distance,place strip of paper,mark limits of distance, place paper along linear scale
distance between a and be can be measured using divider asw