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Earth and Space
| Term | Definition |
|---|---|
| albedo | A measure of how much incoming radiation a surface reflects |
| ecosystem | and community of living and non-living things interacting together |
| atmosphere | The gases surrounding a planet or moon, held by gravity |
| biodiversity | The variety of life on Earth or in a particular region |
| carbon dioxide | The primary greenhouse gas emitted by human activities |
| carbon footprint | The amount of carbon dioxide released by a human activity |
| geosphere | the planets rocks, minerals, soil and sediment |
| global warming | A gradual increase in global surface temperature |
| greenhouse gas | A gas that can absorb and re-emit infrared radiation |
| hydrosphere | Water on or near the surface of a planet |
| ozone layer | A region of the atmosphere with higher concentrations of ozone gas |
| weather | Atmospheric features that change on a day-to-day basis |
| electromagnetic radiation | A type of energy that moves in waves at the speed of light |
| fossil fuel | An energy source from the remains of ancient organisms |
| climate zone | A region defined by certain temperatures, humidity and rainfall |
| climate | Overall weather in an area over a long period of time |
| biosphere | living organisms |