paper 1

• How many centimeters are in a meter?

  100 centimeters
• What is the unit for energy?

  Joules (J)
• What is the formula for gravitational potential energy?

  Potential energy = mass × gravitational field strength × height
• How do you calculate gravitational potential energy for a 5 kg object at 1.5 m?

  Use the equation with values substituted
• What does the squared sign refer to in kinetic energy equations?

  Only the speed or velocity variable
• What is the formula for elastic potential energy?

  Elastic potential energy = 0.5 × k × extension²
• What does specific heat capacity refer to?

  Energy needed to raise 1 kg by 1°C
• How do you calculate specific heat capacity?

  Divide energy by mass and temperature change
• What does the triangle symbol (Δ) represent in equations?

  Change in a quantity
• What is the purpose of the required practical for specific heat capacity?

  To find energy needed to heat 1 kg
• What equipment is typically used in the specific heat capacity practical?

  A metal block or a beaker of liquid
• What is the length of the Golden Gate bridge?

  2,737 m
• What is the first derivative of $x^2$?


  $2x$
• How does photosynthesis work in plants?

  Process of photosynthesis:

  1. Light absorption by chlorophyll
  2. Light-dependent reactions: water splits, electrons excited
  3. Electron transport chain: ATP and NADPH produced
  4. Calvin cycle (light-independent reactions):

  • CO2 fixation
  • Reduction of fixed carbon
  • Regeneration of RuBP

  1. Glucose and other carbohydrates synthesized
• What are the strengths and weaknesses of qualitative research methods?

  Strengths:

  • Provides in-depth, rich data
  • Flexible and adaptable to new information
  • Captures complex phenomena

  
  

  Weaknesses:

  • Time-consuming and labor-intensive
  • Potential for researcher bias
  • Limited generalizability
  • Difficulty in replicating results
• What are the different types of energy stores that a system can have?

  Magnetic, kinetic, thermal, gravitational potential, chemical, elastic potential, electrostatic, nuclear
• What are the key reminders for the AQA GCSE combined science physics paper 1 exam?

  • Write in black pen and keep answers inside the box
  • Use SI units for all calculations
  • Answer extended response questions in bullet points
  • Evaluate questions by comparing both sides and providing a justified conclusion
  • Describe practical methods in a logical, numbered list
• What is the principle of conservation of energy?

  In a closed system, energy cannot be created or destroyed, it can only be transferred between different stores.
• How would you calculate the gravitational potential energy of an object?

  Use the equation: $GPE =$$m \times g \times h$

  Where m is the mass in kg, g is the gravitational field strength in N/kg, and h is the height in m.
• How would you calculate the kinetic energy of an object?

  Use the equation: $KE =$$\frac{1}{2} \times m \times v^2$

  Where m is the mass in kg and v is the velocity in m/s.
• How would you calculate the elastic potential energy stored in a spring?

  Use the equation: $EPE =$$\frac{1}{2} \times k \times x^2$

  Where k is the spring constant in N/m and x is the extension in m.
• What is the definition of specific heat capacity?

  The amount of energy required to raise the temperature of 1 kg of a substance by 1°C.
• How would you calculate the change in energy of an object using the specific heat capacity equation?

  Use the equation: $\Delta E =$$m \times c \times \Delta T$

  Where m is the mass in kg, c is the specific heat capacity in J/kg°C, and ΔT is the change in temperature in °C.
• What are the key steps in the required practical to determine the specific heat capacity of a material?

  1. Measure the mass of the material
  2. Measure the initial temperature of the material
  3. Apply a known amount of energy to the material
  4. Measure the final temperature of the material
  5. Calculate the specific heat capacity using the formula: c = Q / (m * ΔT)
• How can you ensure the required practical to determine specific heat capacity gives accurate results?

  • Use good insulation to minimize heat loss from the system
  • Measure the mass of the material accurately using a balance
  • Measure the temperature changes accurately using a sensitive thermometer
  • Repeat the experiment multiple times and calculate the mean result
  • Ensure the heater provides a consistent and known amount of energy
• What are the key units that need to be used in the physics paper 1 exam?

  • Energy: Joules (J)
  • Speed: Meters per second (m/s)
  • Mass: Kilograms (kg)
  • Height: Meters (m)
  • Power: Watts (W)
  • Time: Seconds (s)
  • Charge: Coulombs (C)
  • Potential Difference: Volts (V)
  • Current: Amps (A)
  • Resistance: Ohms (Ω)
  • Density: Kilograms per cubic meter (kg/m³)
• What must you calculate to find the specific heat capacity?

  The change in temperature
• Why must mass be in kilograms for specific heat capacity calculations?

  To ensure correct energy calculations
• How do you convert grams to kilograms?

  Divide by a thousand
• What is the purpose of the required practical involving a metal block or liquid?

  To find the specific heat capacity
• What equipment is used to measure mass in the practical?

  A balance
• Why is insulation important in the experiment?

  To minimize energy losses to surroundings
• What tool is used to measure temperature in the experiment?

  A thermometer
• Why might you heat the block by more than one degree Celsius?

  To increase the accuracy of results
• How do you adjust energy calculations when heating by 10 or 20 degrees?

  Divide energy by 10 or 20
• Why is water added to the thermometer in the experiment?

  To ensure proper temperature contact
• What is used to heat the block in the experiment?

  An electrical heater
• How can power be calculated in the experiment?

  Using voltmeter and ammeter readings
• What is the formula for calculating power?

  Power = Voltage × Current
• What does one watt equal in terms of energy?

  One joule per second