Environmental problems - Climate change

15 important questions on Environmental problems - Climate change

How do scientists determine earth's temperature?

By analyzing air bubbles trapped in ice cores on Antarctica and Greenland

What conclusion has been made from the measurements taken by scientists

The global climate has been changing since the existence of the Earth

How have volcanic eruptions affected the change of the average global temperature?

it blasts ash clouds into the atmosphere and inhibits solar radiation from reaching the earth's surface for a certain period of time
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What happens during a volcanic eruption

The volcano blasts ash clouds into the atmosphere, this inhibts radiation from reaching the Earth's surface for a certain period of time. It impacts the global temperatures only in the short-term

How is the earth's global temperature influenced by changes in incoming solar radiation?

The sun doesn't always emit the same amount of solar radiation

What role does the sun play in climate change

It does not always emit the same amount of solar radiation. A change in insolation triggered the little ice age

How has shifting tectonic plates influenced climates?

As the continents moved they were located at different distances from the equator at different times

What are 3 natural reasons for climate change?

Volcanic eruptions, insolation, shifting tectonic plates

What would happen without the greenhouse effect?

Earth would experience temperature conditions similar to those of the moon

What is the intergovernmental panel on climate change (IPCC)?

Internal organisation that investigates climate change

What happened to the amount of CO2 in the air

More is entering the atmosphere than is taken out

Why is photosynthesis the most important process of taking out CO2 in the air

Because the CO2 is transferred into vegetation on land and into plankton in the oceans

What is the carbon cycle?

Model of stores and transfers of carbon throughout the earth's system

What have people used fossil fuels for?

To run factories, cars and other machines

Explain the enhanced greenhouse effect

Fossil fuels are released into the atmosphere and add to the volume that it present, creating a thicker blanket that is better at trapping heat rising from the earth

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