Science Notes

* it regulates Earth's atmospheric temperature.
* It keeps the temperature range hospitable for most forms of life.
* Without it 8the Earth's surface would be too cold.

Why is the greenhouse effect is necessary?

The sun radiates energy towards the Earth's surface, and most of the light is absorbed by the Earth's surface and converted into heat. The Earth's surface then radiates this heat back towards the atmosphere in the form of infrared radiation. Greenhouse gases in the atmosphere trap some of this infrared radiation and re-emit it in all directions, including back towards the Earth's surface.

How does the greenhouse effect work?

An increase in the natural greenhouse effect caused by human activities that emit greenhouse gases into the atmosphere.

what is the enhanced greenhouse effect?

Human activities such as burning fossil fuels, deforestation, and industrial processes emit large amounts of carbon dioxide, into the atmosphere. It traps more heat in the atmosphere than would occur naturally, causing the Earth's temperature to rise.

how does the enhanced greenhouse effect works?

long-term increase in the average temperature of the Earth's atmosphere.

what is global warming?

When fossil fuels are burned, they release large amounts of carbon dioxide and other greenhouse gases into the atmosphere, contributing to the enhanced greenhouse effect.

How does the production of electricity lead to global warming?

Coal

What is Australia's leading fossil fuel to burn electricity?

The carbon cycle is the process by which the earth reuses carbon atoms through the different spheres. carbon dioxide in the atmosphere → absorbed by plants through photosynthesis → goes into the lithosphere (ground) with decaying plants → stays underground with dead animals and plants → some can turn into fossil fuels underground → can be taken in for root respiration as well as dug up to burn fossil fuels → goes back into the atmosphere → animal respiration

Describe the carbon cycle 

The carbon cycle is vital for Earth because it allows organisms to survive. The carbon cycle naturally balances carbon throughout the earth making sure there isn’t too much in one area.

Why is the carbon cycle important?

The increased release of carbon dioxide from burning fossil fuels disrupts the natural carbon cycle, as more carbon is being released into the atmosphere than can be absorbed by plants and other natural processes + it moves the carbon from the slow cycle to the fast cycle.

Explain the effect of burning fossil fuels on the carbon cycle

carbon dioxide + water (light & chlorophyll) --------->  oxygen + glucose  

Word equation for photosynthesis

glucose + oxygen --> carbon dioxide + water  

Word equation for respiration

oxygen + fuel --> carbon dioxide and water + (heat) 

Word equation for combustion

combustion and respiration

What are processing releasing C02?

Photosynthesis

What are processes taking in CO2? 

Burning coal releases carbon dioxide into the atmosphere, which contributes to the increase of greenhouse gases in the atmosphere. This increase in greenhouse gases can cause global warming and climate change.

How does burning coal to produce electricity affect the carbon cycle 

The fast carbon cycle involves the movement of carbon through the Earth's biosphere and atmosphere through biological and physical processes. examples include photosynthesis, animal/human respiration and combustion

What is the fast carbon cycle?

The slow carbon cycle involves the movement of carbon between the lithosphere and the oceans. It is primarily driven by geologic processes and takes millions to billions of years.

What is the slow carbon cycle?

need very little detail, say what the title is, the x axis, the y axis and how it is measured.

what to write when **describing** a graph:

needs more detail, must include values in answer. “an analysis of the graph illustrates…” “what’s interesting here is…”

what to write when **analysing** a graph:

needs a lot of detail. need to explain the science behind it? why? chemical equations?

“this seems to suggest that…”

what to write when **evaluating** a graph: