Alevel Physics Definitions (module 5 Newtonian World and Astro)

'A temperature scale which is independent of the properties of any specific substance, measured in kelvin'

is the definition of:

• Absolute zero

• Specific heat capacity

• Absolute thermodynamic scale

• Kelvin substance scale

'States that the volume of a fixed mass of gas is inversely proportional to the pressure exerted on the gas, when temp is constant'

is the definition of:

• Boyle's Law

• Charles' law

• Pressure temperature law

• The nRT gas rule

'Random movement of small visible particles suspended in a fluid due to collisins with much smaller, randomly moving atoms'

is the definition of:

• Particle movement

• Specific latent heat of fusion

• Binding Energy

• Brownian Motion

When pV = NkT, what does the N stand for?

• Number of molecules or atoms

• Number of moles in a substance

• Avogadro constant

• Atomic number

Which is the best definition for 'root mean square speed'?

• ꞓ² (c bar squared)

• Mean kinetic energy of particles in a gas, regardless of direction

• Mean of all the speeds of all the many atoms in a gas

• Mean of the squares of the random speeds, square rooted

'A reduction of the amplitude of an oscillation with time, by removing energy from the system'

is the definition of:

• Damping

• Resonance

• Polarisation

• Efficiency

Simple harmonic motion should be defined as:

• Something swinging back and forth, where the amplitude and frequency affect the acceleration

• Phase difference between displacement and acceleration is π

• Isochronous (independent of amplitude)

• Amplitude is directly proportional to displacement (in opposite directions)

Displacement, velocity and acceleration are all out of phase by what?

• λ

• π/2

• π/4

• π

'Gravitational field strength' is defined as:

• Gravity

• Radial field surrounding mass

• Force per unit mass

• 9.81 m/s²

Which of these is not one of Kepler's laws of Planetary motion?

• Time period of the orbit squared is proportional to the mean radius of the orbit cubed

• The Force of gravitation is proportional to the product of the masses of two bodies

• Planets travel in elliptical orbits

• A line joining the sun will sweep equal areas in equal times