Composition of the atmosphere
What is the atmosphere
Layer of gases surrounding our planet
Name the layers of the atmosphere
Troposphere, stratosphere, mesosphere, thermosphere, and exosphere
What are the gases in the atmosphere that let us be alive?
O2 and CO2
What is atmospheric pollution?
The presence in the atmosphere of substances and energy in amounts that can endanger living beings and the environment
What is the atmosphere made up of?
It is made up of a mixture of gases called AIR
In which layer of the atmosphere are most of the gases?
In the troposphere
What is the function of carbon dioxide for living beings?
Let the plants carry out photosynthesis
Name 3 effects of atmospheric pollution
- Acid rain
- Depletion of the ozone layer
- Increase of the greenhouse effect
What is the inert gas that does not interact with living beings and is very abundant in the atmosphere?
Nitrogen (N2)
In which layer of the atmosphere is the ozone layer, and what is its function?
Stratosphere
Protects us from UV radiation
What does the atmosphere protect us from?
Solar radiation and the impact of meteorites
Name the 3 types of atmospheric pollutants and give an example of each
- Gases: CO2, CH4, CFCs, sulfur oxides and nitrogen oxides.
- Particles
- Energy: light and sound
What gas in the atmosphere is necessary for living beings to breathe, and what is its percentage in the air?
Oxygene (O2) represents about 21% of the air.
In what layer do the northern and southern lights happen?
In the thermosphere
What are the 3 roles of the atmosphere?
- Protect us from solar radiation and meteorites.
- Contains the gases necessary for living beings to live.
- Regulates the temperature of the Earth.
Name 3 consequences of global warming
- Increase in the number of hurricanes
- Growth of the deserts
- Rise in sea level due to the melting of the polar ice.
- Reduction of available fresh water
What is the gas that varies a lot from one place to another in the atmosphere, and what is its function?
Water vapour (H2O)
Gives humidity to the air and keeps the temperature
Where do shooting stars occur?
In the mesosphere
Explain the greenhouse effect
Solar rays get to the surface of the Earth, warm it and go out. But some of them are trapped by the "Greenhouse gases", so they can't escape and increase the heat in the troposphere.
Explain why the greenhouse effect can be a problem for our planet
If the greenhouse effect increases, the temperature of the planet will rise more and more