The Natural And Human Causes Of Climate Change
Gbogbo ọrọ náà
The Earth has always had a changing climate. Ice ages have come and gone, sea ice has advanced and retreated, and ancient paintings even show frost fairs held on a frozen River Thames. So how do we know that the warming happening today is different, and that human activity is the cause? This lesson teaches you to read the evidence for yourself.
You will learn how scientists reconstruct past climates from ice cores and temperature records, how natural forces such as orbital wobbles, sunspots and volcanic eruptions nudge the climate, and how burning fossil fuels, clearing forests and farming have strengthened the greenhouse effect far faster than nature ever could.
Ebumnobi
- Evidence of climate change: global temperature data, ice cores, sea ice positions, historic writing and paintings.
- Factors influencing natural climate change: orbital changes (Milankovitch cycles), sunspots, volcanic activity.
- The human influence on the atmosphere causing the enhanced greenhouse effect. For example, the use of fossil fuels, deforestation, agriculture.
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Nnyocha Ọmụmụ
Ekele diri gi maka imecha ihe karịrị na The Natural And Human Causes Of Climate Change. Ugbu a na ị na-enyochakwa isi echiche na echiche ndị dị mkpa, ọ bụ oge iji nwalee ihe ị ma. Ngwa a na-enye ụdị ajụjụ ọmụmụ dị iche iche emebere iji kwado nghọta gị wee nyere gị aka ịmata otú ị ghọtara ihe ndị a kụziri.
Ị ga-ahụ ngwakọta nke ụdị ajụjụ dị iche iche, gụnyere ajụjụ chọrọ ịhọrọ otu n’ime ọtụtụ azịza, ajụjụ chọrọ mkpirisi azịza, na ajụjụ ede ede. A na-arụpụta ajụjụ ọ bụla nke ọma iji nwalee akụkụ dị iche iche nke ihe ọmụma gị na nkà nke ịtụgharị uche.
Jiri akụkụ a nke nyocha ka ohere iji kụziere ihe ị matara banyere isiokwu ahụ ma chọpụta ebe ọ bụla ị nwere ike ịchọ ọmụmụ ihe ọzọ. Ekwela ka nsogbu ọ bụla ị na-eche ihu mee ka ị daa mba; kama, lee ha anya dị ka ohere maka ịzụlite onwe gị na imeziwanye.
- Which of these is the most reliable, quantitative evidence of recent climate change? A. historic paintings of frost fairs B. measured global temperature records C. old diaries D. folk tales Answer: B
- Which is a NATURAL cause of climate change? A. burning coal B. deforestation C. Milankovitch (orbital) cycles D. cattle farming Answer: C
- The enhanced greenhouse effect is caused mainly by: A. the ozone hole B. extra greenhouse gases from human activity C. more sunspots D. volcanic ash Answer: B
- A large volcanic eruption usually has what short term effect on global temperature? A. strong warming B. no effect C. slight cooling D. permanent warming Answer: C
- Which greenhouse gas is released mainly by cattle and rice farming? A. carbon dioxide B. methane C. oxygen D. nitrogen Answer: B
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