Green House Affest And Global Warming Flashcards
What is the green house affect ??
The greenhouse affect takes place when the sunrays heat the earth. The heat is absorbed by the surface of the earth and radiated back into the atmosphere
A part of this heat is trappes in the atmosphere by gases like ___________
______________ _______________ _____________
___________ ________
Carbon dioxide , methane, nitrous oxide,
Water vapour, chloroflurocarbons
Why do the greenhouse gased act as a mirror ??
They act like a mirror as they reflect back to the earth some of the trapped heat energy therefore, making the earth warmer
Name 4 causes that have led to the increase in ghgs
Increase in industries
Increase in deforestation
Increase in atmospheric pollution due to the emissions from chimneys of factories
Expansion of cities and towns
Increase in natural disasters like __________ ___________ _____________ that rease large amounts of ________ and __________ and ________ into the atmosphere.
Earth quakes, volcanic Eruptions and floods , smoke dust gases
What is global warming ?
Global warming is the increase in the average earth’s temperature
State five causes of global warming
Burning fossil fuels
Factories belching smoke
Airplanes flying in the sky
Forest fires
Rapid destruction if forest for industries and agriculture
What will lead to food shortages ??
Global warming will worsen climate change which is leading to food shortages
What will climate change cause ??
Climate change will cause disturbances in whether patterns and lead to frequent and heavy floods in some places and severe droughts in others.
It will also cause meliting of polar ice caps with huge chunks of icebergs several km across from mainland
Which countries would be swamped by floods if we do not take charge on global warming??
Countries like bangladesh, thailand , malaysia and the southern eastern parts of USA like florida and louisiana would be swamped by floods
Many forms of wildlife are now at rusk of extinction due to ________ and __________ which is causeing the disappearance of _________
Climate change, deforestation, habitat
What natural disasters have increased in the world due to global warming?
Hurricanes , tornadoes , sudden floods, heat waves, wild fires and other similar disasters has increased throughout the world
Temperatures changes are causing changes in the flow of _____________
How wiuld you reduce global warming?
We can reduce global warming by using materials such as bamboo, recycled metal, organic paints in the construction of buildings . We can use solar energy for heat and light in out houses , using clean fuel like cng and unleaded petrol to run vehicles.
How can u reduce global warming in everyday practices??
We can choose to travel in public transports , walking and hiking , biking or using a carpool. Buying energy efficient household items and replaces light bulbs with cfl bulbs will also reduce global warming
If we are exposed to the UV rays if the sun, what diseases can we get ?
Human and animals can get sunburn,cataract, hair loss, skin cancer and birth deformities. Plant growth mayb also be affected.
How is the ozone gas starting to get depleted ??
Cfcs do not break down in the form of rain. They float up in the atmospher with the halp of winds and warm air currents . They drift up slowly till they reach the stratosphere. The uv rays of the sun breaks them apart and releases chlorine atoms
What forms chlorine monoxide
Each chlorine atom combined with oxygen atoms combine chlorine monoxide
What does chlorine monoxide cause ?
Chlorine monoxide causes a chemical reaction which destroys ozone molecules in the stratosphere and the ozone hole is gradually formed.
Burning of harmful fossil fuels causes _____________
Ozone depletion
Vehicles that run on petroleum relase _______________ in the air.
Carbon dioxide
What gases destroy the ozone layer??
Carbon dioxide and other greenhouse gases destiy the ozone layer in the atmosphere by breaking up the molecules and leaving extremely vulnerable to the uv rays if the sun.
Where are most of the greenhouse gases found??
Most of the greenhouse gases are found in fossil fuel emissions that cars burn off and release into the atmosphere
