OCR Physics P4 Revision cards
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Created by Dan Allibone
over 8 years ago
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Copied by Carson Yeung
over 8 years ago
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Which radioactive materials are commonly used in smoke alarms and what do they emit?
What does static mean?
Name the charges of each : Proton, Electron and Neutron
Electricity take the path of the least...
How does static electricity work?
Use the terms; electrons, positive charge, negative charge and attraction
Where are the following placed in a circuit and why : Ammeter, voltmeter
What colour are the earth, live and neutral wires in a plug
what is the formula for calculating resistance?
Does a fuse actually blow? If not what does it actually do and why?
Define ultrasound
What is the name of the other type of sound outside our hearing range and what frequency does it have?
Name 3 uses of ultrasound
What is alpha and what is its charge?
What is beta and what is its charge?
What is gamma radiation and what is its charge?
Define half life
What type of curve is seen on radioactive decay graphs and why?
What is ionisation?
What is the charge of an ion?
What type of reaction is nuclear fission?
How do CT scanners work?
Why are high doses of radiation often safer than lower ones?
How do radioactive tracers work?
Where does nuclear fusion occur naturally?
Why is fusion good?
Why don't we use nuclear fusion?
