2024

• Which energy store increases when water is heated?

  Thermal energy
• Which energy store increases when water is pumped uphill in a reservoir?

  Gravitational potential
• Explain one change that would reduce the of carbon dioxide released by each activity


  Transport- Use electric cars to reduce the amount of co2 being released

  Generating electricity- Use renewable energy resources like solar panels
• In nuclear power stations, energy is released from 


  Uranium nuclei
• The uranium in Figure 2 splits into two parts and 


  releases three neutrons
• The process of nuclear fission released electromagnetic radiation in the 


  form of Gamma rays
• Write down the equation which links energy power and time


  E=PxT
• Suggest one precaution taken to reduce the hazard caused by radioactive waste from power stations.


  -Build it away from urban areas
• Describe a method the student could have used to collect the data needed to plot the graph. 


  • Set up circuit
  • Attach a length of wire along a metre ruler using pieces of tape.
  • Attach a crocodile clip to one end at 0cm and one at 10cm.
  • Connect to a voltmeter and ammeter.
  • Move the crocodile clips up in increments of 10cm.
  • repeat this at least 3 times so you can calculate the mean
  • Calculate the resistance at each point using V=IR.
  • Record the results and draw graph
• Explain why the cell was not an electrical hazard to the student in the investigation. 


  • Voltage too low
• Explain why the student's hair stands up on end.

  Students hair becomes negatively charged as the electrons spread out. Like charges repel so stands up.

  Negatively charged dome transfers electrons to the student.
• What is an electric field? 


  • A region around a charged object where other charged objects experience a force
• How does the electric field strength vary as the distance from the charged metal dome increases? 


  • Strength decreases
• Which of the following changes would increase the distance a spark can jump between the dome and the earthed conductor?

  -Decreased electrical resistance of air
• What is the frequency and the potential difference of the mains electricity supplies the UK?


  Frequency=50 Hz

  Potential difference=230 V
• Coins that are dirty are not recognised by the vending machine.


  Sensors cant read it/change to weight and size/altered electrical conductivity
• Which energy store increases as the bungee cords are streched?

  -Elastic potential
• The actual maximum height reached by the pod will be lower than the correct answer to Question 06.2

  Explain why

  -it did not take into account the person inside
• Suggest one reason why the student should have used thing string instead of thick string

  -Less volume so less displacement of water
• Even without using the string the measuring cylinder could not give an accurate reading for the volume of the ring

  Give one reason why.

  -The ring may not have a regular shape
• How could the student use the readings from the balance to determine the correct mass of the ring?


  -Minus the 0.02 from the mass of the ring
• When the plunger was pushed slowly into the syringe, the pressure in the syringe increased.

  The temperature of the air remained constant.

  Explain why the pressure increased.

  -Decreased volume for the same amount of particles.

  -Less space air particles collide more frequently with walls of syringe causing increase in pressure.
• Alpha radiation


  -Alpha radiation only travels a short distance about 1-2cm. The count rate for source A only starts increasing at around 2cm.
• Beta


  -Beta will not travel through paper. Gamma will travel through paper.
• Suggest one safety precaution the teacher would have taken to reduce the radiation dose the teacher received. 


  -Stand back
• Suggest one safety precaution that the teacher would have taken to avoid becoming contaminated. 


  -Wear gloves
• What colour is the insulation covering the live wire in a three-core cable?


  Brown
• Draw the circuit symbol for a fuse 


  here

  
• Draw the circuit symbol for a thermistor. 


  here