HMCS Vancouver Pre-Deployment Brief - May 2024 (Web Version).pptx
Heat unit review.ppt
1. Things you need to know for
your test
Monday April 29th, 2013
Mark it in your calendars if you
haven’t already done so!
2. The Atmosphere
• Definition – blanket of gases and other
particles that surrounds Earth.
• Within the atmosphere, we breathe in a
mixture of gas (oxygen) and dust of
various substances. Our lungs filter
the elements we don’t want and pump
the oxygen to our organs
3. The layers of the atmosphere
• Troposphere – 0 to 20 km
• Stratosphere – 20 to 50 km
• Mesosphere 50 to 85 km
• Thermosphere – 85 to 690 km
• Exosphere 690 to 10,000 km
• Terrible Super Mario Tames Elephants
4. In one sentence, - What do they
do?
• Troposphere - all the weather takes place in
this region.
• Stratosphere – ozone layer, protects us from
Ultra Violet rays.a
• Mesosphere – Burns and incinerates any debris
from space, protects us from meteors!
• Thermosphere – where the space station orbits.
• Exosphere – Where the satellite orbits. Satellite
TV and Radio!
5. Statistics to know
• 20% of the Sun’s energy is absorbed in the
atmosphere by dust, water vapour, and water
droplets.
• 30% of the energy from the sun is reflected
back out to space by the atmosphere.
• 46% of the Sun’s energy is absorbed by the
Earth’s water and land surfaces
• 4% of the Sun’s energy is reflected by Earth’s
water and land surfaces
6. Greenhouse Gases
• Carbon Dioxide – Cars, what we breathe
out.
• Methane – natural gases, fuels.
• Nitrous Oxide – laughing gas, anesthetics
• Halocarbons – Human made pollution
• Ozone – Earth’s Atmosphere
• Water vapour – self explanatory?