Flashcards in Chapter 1- Finding Out About The Past Deck (9)
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What is pre-history?
Pre-history is a time before written records we made
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What is the study of layers in the ground called?
They study of layers is called stratigraphy.
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What is aerial photography?
Photographs taken from the air to find crop marks.
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What are geophysical surveys?
This is a method using metal detectors to find hidden objects in the ground.
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What is field walking?
Field walking is walking over a site, looking for objects of any interest.
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What are the steps to preparing a dig? (3)
1. Seal of the area
2. Remove the topsoil
3. Draw a site grid, with each square given a number and letter with the location of any found object written exactly on the grid.
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What tools are used when doing a dig? (5)
Trowel: Main tool for digging
Sieve: Earth placed in sieve to separate the dirt and stones from the object.
Small Brush: Once examined, objects are cleaned with a small brush.
Photographic Scales: placed beside large objects to judge the size of it.
Polythene Bags: Object is then placed in the polythene bags which are labelled with the details of where the object was found.
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Name and describe 2 ways artefacts are dated.
1. Dendracronology: Archaeologists count the rings of a tree to see how many years it has been living.
2. Carbon-14 Dating: All living things have the chemical carbon-14 in them. When they die, the amount of carbon-14 decreases, allowing archaeologists to calculate how many years it has been dead.
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