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Radioactive decay - waves and particles
Revision and exam practice for Radioactive decay - waves and particles.
15
Objectives
10
Flashcards
10
Questions
90 min
Study time
OcrGcseCombined Science A GatewayRadioactive decay - waves and particles
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15 objective pages available
Typical Speeds in Everyday Experience1 objectives
- Retrieve and apply knowledge of typical speeds encountered in everyday experience for wind and sound, and for walking, running, cycling and other transportation systems.
Estimating Everyday Accelerations1 objectives
- Obtain a justified estimate of the magnitudes of everyday accelerations.
Calculations Using Ratios and Proportional Reasoning1 objectives
- Develop knowledge and skill in calculations using ratios and proportional reasoning to convert units and to compute rates.
Measuring Human Reaction Times1 objectives
- Account for methods of measuring human reaction times and recall typical results.
Road Transport Stopping Distances and Safety1 objectives
- Account for the factors which affect the distance required for road transport vehicles to come to rest in emergencies and the implications for safety.
Dangers of Large Decelerations1 objectives
- Account for the dangers caused by large decelerations.
Understanding Energy Sources: Renewable vs. Non-Renewable1 objectives
- Communicate the key features of the main energy sources available for use on Earth, compare the ways in which they are used and distinguish between renewable and non-renewable sources.
Patterns and Trends in Energy Resource Use1 objectives
- Account for patterns and trends in the use of energy resources.
Electrical Power Transmission in the National Grid1 objectives
- Retrieve and apply knowledge of that, in the national grid, electrical power is transferred at high voltages from power stations, and then transferred at lower voltages in each locality for domestic use.
Understanding Step-up and Step-down Transformers in Power Transmission1 objectives
- Retrieve and apply knowledge of step-up and step-down transformers are used to change the potential difference as power is transferred from power stations.
Understanding the Efficiency of the National Grid in Energy Transfer1 objectives
- Account for the way the national grid is an efficient way to transfer energy.
Understanding the UK Domestic Electricity Supply1 objectives
- Retrieve and apply knowledge of the domestic supply in the UK is a.c.at 50 Hz and about 230 volts.
Understanding Direct (DC) and Alternating (AC) Voltage1 objectives
- Account for the difference between direct and alternating voltage.
Mains Wiring: Live, Neutral, and Earth Wires1 objectives
- Retrieve and apply knowledge of the differences in function between the live, neutral and earth mains wires, and the potential differences between these wires.
Dangers of the Live Wire in Mains Circuits1 objectives
- Account for a live wire may be dangerous even when a switch in a mains circuit is open, and explain the dangers of providing any connection between the live wire and earth.
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Practice preview
- A scientist measures the activity of a radioactive source. She records 1500 counts over a period of 5 minutes. Calculate the average activity of the source in counts per second. [3 marks]
- Which of the following is a typical human reaction time for a simple stimulus?
- A 2 kg sample of a radioactive isotope has an activity of 500 Bq. If you have a 5 kg sample of the same isotope, what would be its activity, assuming activity is directly proportional to mass?
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