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GCSE Combined Science · key term
The transfer of energy from a wave to a material.
Used by AQA and Edexcel
Specification 4.2.2.1, 6.6.2.2, 6.6.2.3, 6.6.2.4 · Paper 1, Paper 6
The movement of digested, soluble food molecules through the intestinal wall into the body, including the bloodstream.
Revise: Digestion, absorption and bileDigestion breaks them down into small, soluble molecules that can pass through the intestinal wall. Their movement into the body is called absorption.
A Leslie cube investigation measures emission. Do not describe its detector readings as measurements of absorption.
For X-ray imaging, explain the difference in absorption: bone absorbs more X-rays than soft tissue. Do not say that all X-rays pass through everything.
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The taking in of radiation by a material, transferring energy to it.
The transfer of energy from an electromagnetic wave to the material receiving it.
The transfer of energy from radiation to the material it encounters.
Paper 5, Paper 6
The transfer of energy from a wave to a substance.
The transfer of energy from a wave to the substance it encounters.
The taking in of radiation by a material, transferring energy to that material.