Paper 2: Required Practicals Flashcards
(21 cards)
What is the aim of the Hooke’s Law practical?
To investigate the relationship between force and extension for a spring.
What is the method for Hooke’s Law practical?
Hang masses from a spring and measure extension using a ruler. Plot force vs. extension graph.
What does the graph look like in the Hooke’s Law practical?
Linear relationship up to the elastic limit. Slope gives spring constant.
What is the formula used in Hooke’s Law?
F = k × e where F = force (N), k = spring constant (N/m), and e = extension (m).
What is the aim of the acceleration practical?
To investigate how mass and force affect acceleration.
What is the method for the acceleration practical?
Use a trolley on a ramp with a light gate or motion sensor. Change mass or force (via pulley). Measure acceleration.
What is Newton’s Second Law?
F = m × a where F is force, m is mass and a is acceleration.
What is the aim of the ripple tank practical?
To measure the wavelength frequency, and speed of waves in water.
What is the method for the ripple tank practical?
Use a ripple tank with a light source. Measure wavelength with a ruler. Use strobe or video to measure frequency and calculate speed (v = f × λ).
How can you improve accuracy in the ripple tank practical?
Use a strobe light to freeze waves. Take multiple wavelength measurements.
What is the aim of the waves in a solid practical?
To measure the speed of sound in a metal rod using resonance.
How is the speed of sound in a solid measured?
Use a vibration generator with a metal rod. Measure length of standing waves and calculate wave speed using v = f × λ.
What is the aim of the infrared radiation practical?
To investigate how different surfaces emit and absorb infrared radiation.
What is the method for the infrared radiation practical?
Use a Leslie cube with different surface finishes (e.g. shiny, matte). Use an IR detector to compare emission rates.
What do you expect from the infrared practical?
Dark matte surfaces emit and absorb more infrared radiation than light, shiny ones.
What is the aim of the lenses practical (separate science only)?
To investigate image formation using convex lenses.
What is the method for the lenses practical?
Place a light source lens, and screen on a bench. Move lens to focus image and measure object and image distances.
How do you calculate magnification in the lenses practical?
Magnification = image height / object height.
What is the aim of the radiation and half-life practical?
To model radioactive decay and investigate the randomness of half-life.
What is the method for the half-life practical?
Use dice or coins to model decay. Remove decayed items (e.g. 6s). Count how number falls over each “half-life”.
What is the key concept shown by the half-life model?
Half-life is the time taken for half the radioactive nuclei to decay. Decay is random but the pattern is predictable.
