• Like
Climates 21 3
Upcoming SlideShare
Loading in...5
×
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Be the first to comment
    Be the first to like this
No Downloads

Views

Total Views
330
On Slideshare
0
From Embeds
0
Number of Embeds
0

Actions

Shares
Downloads
9
Comments
0
Likes
0

Embeds 0

No embeds

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
    No notes for slide

Transcript

  • 1. 21.3 Climates changes
  • 2. Natural processes that change climate
  • 3. Volcanic eruptions
    • The presence of aerosols (volcanic ash, dust, and sulfur- based aerosols) in the air increases the amount of solar radiation that is reflected back into space. Earth lower atmosphere to cool.
  • 4. Ocean circulation
    • The changes in ocean circulation also can result in short-terms climates fluctuations.
  • 5. Solar activity
    • When the sun is most active, it contains dark blemishes called sunspots.
  • 6. Earth Motions
    • These geographic changes in earth’s land and water bodies cause change in climate.
    • Changes in the shape of earth’s orbit and the tilt of earth on its axis are other earth motions that affect global climates.
  • 7. Human impact on climate changes
    • Human activities have contributed and will contribute to global climates change. Also natural processes have certainly contributed to many climates changes throughout earths 4.6-billion year history.
  • 8. The Greenhouse Effect
    • The greenhouse effect is a natural warming of both earth’s lower atmosphere and earth’s surface.
  • 9. Global Warming
    • As A result of increases in carbon dioxide levels, as well as other green house gases, Global temperatures have increased. This increase is called Global Warming.