24727284
Descrição
FlashCards por Ronan Kavanagh, atualizado more than 1 year ago
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Criado por Ronan Kavanagh
aproximadamente 6 anos atrás
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| Questão | Responda |
| Relative Dating | Exact age unknown, but it is known if it is older/younger than other sample or earth it was found in. Allows sequence of events to be established. |
| Absolute Dating | Age of sample known in years of a fossil or artefact. |
| Potassium-Argon Dating | Absolute dating method where ratio of Potassium-40 to Calcium- and Argon-40 is used. Half-Life = 1.21 billion years |
| Radiocarbon Dating | Based on Carbon-14 to Nitrogen decay. Half-Life = 5700 years |
| Artefact | An object made or modified by humans |
| Index Fossils | - Widespread, but for a short period of time - Can be used in stratigraphy to date other fossils |
| AMS Radiocarbon Dating | TBA |
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