A. Space, time and motion

A.1 Kinematics

A.2 Forces and momentum

A.3 Work, energy and power

A.4 Rigid body mechanics

A.5 Galilean and special relativity

B. The particulate nature of matter

B.1 Thermal energy transfers

B.2 Greenhouse effect

B.3 Gas laws

B.4 Thermodynamics

B.4.1 (HL)—First law of thermodynamics

B.4.2 (HL)—Gas work

B.4.3 (HL)—Internal energy change

B.4.4 (HL)—Entropy and disorder

B.4.5 (HL)—Entropy equations

B.4.6 (HL)—Second law of thermodynamics

B.4.7 (HL)—Irreversibility

B.4.8 (HL)—Local entropy decrease

B.4.9 (HL)—Gas processes

B.4.10 (HL)—Adiabatic ideal gas

B.4.11 (HL)—Heat engine cycles

B.4.12 (HL)—Heat engine efficiency

B.4.13 (HL)—Carnot efficiency limit

B.5 Current and circuits

C. Wave behaviour

C.1 Simple harmonic motion

C.2 Wave model

C.3 Wave phenomena

C.4 Standing waves and resonance

C.5 Doppler effect

D. Fields

D.1 Gravitational fields

D.2 Electric and magnetic fields

D.3 Motion in electromagnetic fields

E. Nuclear and quantum physics

E.1 Structure of the atom

E.2 Quantum physics

E.3 Radioactive decay

E.4 Fission

E.5 Fusion and stars

S Skills in Physics

S1.1 Experimental techniques

S1.2 Technology

S1.3 Mathematics

S2.1 Exploring and designing

S2.2 Collecting and processing data

S2.3 Concluding and evaluating

IB Physics HL B.4.7 (HL)—Irreversibility Question Bank

• Real isolated processes are usually irreversible; entropy tends to increase.

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